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1974 Ford 302 compression ratio

Schau Dir Angebote von Compressions auf eBay an. Kauf Bunter Hier kostenlos & schnell den Preis deines Gebrauchtwagens bestimmen I have a 1974 ford 302 engine.It has 8.5 to 1 compression ,dished pistons and the 2v head code.Is there a head that I could install and raise the compression to 9 to 1.This engine is in a 1950 Ford coupe and it is a cruiser.I'll just be using the low to mid range speeds.I'm not sure I want to install new pistons. Thanks Warre Discussion Starter · #1 · Sep 2, 2014. On my 69 302, I'm trying to figure out how Ford arrived at the 9.5:1 compression ratio on a stock motor. I have cylinder head volume at 58cc and deck clearance at .016 inches however I don't know what the dome volume or compressed gasket thickness was? david

1973--302-8 horsepower drops to 138, compression down to 8.0:1 1974--302-8 rises back to 140 hp (from 138) (that makes me RIGHT ON correct with my estimate of 130-150!!! But I am pretty sure it is not because of a compression change Mustang II Forums (1974-1978) Mustang II Tech. 1978 302 Compression Ratio. Jump to Latest Follow 1 - 9 of 9 Posts. RileyF100 · Registered. Joined 1978 Ford Mustang Cobra II - Big Red '96 302 with a 4bbl Holley carb, Performer Intake, Keith Black pistons, and a 268H Comp Cam These desirable heads have larger ports, valves, and chambers. Larger chambers have reduced compression ratio. Keep this in mind anytime you're considering a head swap. Ford raised the 302 block deck 1.28 inches to conceive the 351-ci Windsor V-8 for 1969, which was available in 4V versions only in 1969

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  1. My Chilton repair manual shows 2 listings for 1987 Ford 302 V8's the compressions ratios are: for 1987 Vin (F) 150 H.P. as 8.9 to 1 for 1987 VIN (M) 210 H.P. (high output - HO) as 8.3 to 1 The.
  2. I have a 1974 ford 302 engine.It has 8.5 to 1 compression ,dished pistons and the 2v head code.Is there a head that I could install and raise the compression to 9 to 1.This engine is in a 1950 Ford co read mor
  3. Joined Jan 9, 2002. ·. 6,662 Posts. #2 • Feb 3, 2012 (Edited) Ford did lots of changing during the 70s with different pistons and heads to keep compression down..In your case with the 1975 motor ford increased the deck hieght of the block (73-76) by .023 to keep compression at a measly 8:1..The combustion chamber in the heads is listed at 58.
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I have a 1974 ford 302 engine

  1. Ford Mustang 302 V-8 Engine Guide The 302's life cycle lasted from 1968 to 1973 Right off the bat, I want to tell you that this is one of the hardest sections I have had to organize. There is so much information and it spans so many years, that much of the information changes from year to year, while other information remains static. So the information at the top will be easy to understand.
  2. With this crank came longer connecting rods (5.956 inches) than you find inside the 289/302. New for 1969 was the only 351W-4V engine ever produced with 10.7:1 compression ratio. The 351W-2V engine had a more modest compression ratio of 9.5:1
  3. Beginning in 1972 all Ford engines were rated SAE Net BHP and SAE net Torque, as installed in the vehicle. Engine Compression ratio Bore & stroke VIN code 302-2V Windsor V8: 140 hp (100 kW) @ 3800 rpm: 230 lb⋅ft (312 N⋅m) @ 2600 rpm: Compression ratio Bore & stroke VIN code 351-2V Windsor V8: 154 hp (115 kW) @ 3400 rpm.
  4. Beginning in 1977, chamber size increased to 69 cc to further reduce the 302's compression ratio. These heads are numbered D7OE-DA and D8OE-AB, which are undesirable castings, no matter what you do with them. In 1979, Ford introduced a D9AE the 302/351W cylinder head casting very similar to the D7OE and D8OE castings with 67- to 70-cc chambers
  5. The Ford small block (aka Windsor V8) is a series of 90° overhead valve small block V8 automobile engines built by the Ford Motor Company from July 1961 to 2002.. Designed as a successor to the Ford Y-block engine, it was first installed in the 1962 model year Ford Fairlane and Mercury Meteor.Originally produced with a displacement of 221 cu in (3.6 L), it eventually increased to 351 cu in (5.

CR Compression Ratio 12.0 V + Vcl Vcl NOTE: 1) Math reduction; /4 x 16.387 = 12.87 The precise amount is limited by block deck height, casting thickness, valve-to-piston clearance, etc. NOTE: Also modify the intake manifold to maintain port alignment. COMPUTING COMPRESSION RATIO Compression ratio is defined as the ratio Dec 15, 2004. #8. These are on the low side, but if they are all about the same, they are ok. A number of things affect compression, hot, cold, if the throttle body is open fully, etc. Also, many performance oriented engines have relatively low cranking compression because they have more cam, and therefor more overlap, which tends to bleed off. All specifications, performance and fuel economy data of Ford Bronco Wagon 302 V-8 (102 kW / 139 PS / 137 hp), edition of the year 1974 since mid-year 1973 for North America U.S., including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0-200 km/h, quarter mile time, top speed, mileage and fuel economy, power-to-weight ratio, dimensions, drag coefficient, etc

1987-1995 302 9.0:1 Compression 4.0 X 3.0 (Bore X Stroke) 1987-1995 300-06 8.8:1 Compression 4.0 X 3.98 (Bore X Stroke) old subject but i got board and sniffed thru old posts :- 375 @ 5200. 4.36 x 3.59. 4V. 10.5:1. Big block. Boss 429. † 1972 and later horsepower figures are SAE NET which vary slightly depending on chassis and application. The engine is run with all accessories and intake and exhaust system as installed in the car. Compression ratios also vary depending on the exact application

302 compression ratio Vintage Mustang Forum

  1. The 1972 302 had a compression ratio of 8.5:1 and were only available from the factory with 2 barrel carbs with a net HP of about 140 @ 4000 RPM and torque of 242 ft.lb. @ 2000. Compression ratios started dropping like a rock across the whole Ford engine line starting in 72
  2. 1974 Ford Bronco technical specifications and data. Engine, horsepower, torque, dimensions and mechanical details for the 1974 Ford Bronco. CO2, emissions,..
  3. g except for 1976 when the compression ratio was 8.0:1 and base ti
  4. 1977 302 stock hp rating Cant find it in my book, whats the stock horsepower of a 77 302 2 barrel, thanks :D Im guessing 200 give or take a lil....
  5. In 1977, they dropped the compression ratio from the original 8.6:1 to 8.3:1, then in 1978, they dropped the compression to 7.74:1. In 1979, Ford went back to 8.3:1 pistons in the car 351Ms. As Ford planned a MY 1977 makeover for their light-duty truck line, they decided to replace the aging FE 360-390 engines with the M-block 351M and 400 engines
  6. http://www.youtube.com/user/MustangConnection11969 Ford Mustang restoration part 25 351 Windsor Engine Compression check come back clean! All 8 cylinders ar..

1974 Ford Bronco Wagon 302 V-8 Cruise-O-Matic (aut. 3) specs. manufactured by Ford (USA) in United States. 3-door wagon body type. 4WD (four-wheel drive, 4x4); transfer case: 2,34/1, automatic 3-speed gearbox. gasoline (petrol) engine with displacement: 4942 cm3 / 301.6 cui, advertised power: 102 kW / 137 hp / 139 PS ( SAE net ), torque: 312 Nm. Avg. Gallon of Gas : $1.10. The 1984 Ford Mustang measures 69.10 inches in width, The 1984 Ford Mustang measures 179.10 inches in length, and has a wheelbase of 100.50 inches. Vehicles with Similar Dimensions. 1986 Ford Mustang 1985 Ford Mustang 1985 Mercury Capri 1985 Mercury Capri ASC McLaren 1984 Mercury Capri 1983 Ford Mustang 1982 Ford. Niedrige Preise, Riesen-Auswahl. Kostenlose Lieferung möglic The 351 heads will retun you to about the stock 74 comp ratio. They should eleminate the pinging and give you slightly larger valves to boot. Most RV type cams are made for lower compression engines(9-1 and below) and dont work well in high compression engines a bigger cam would help but i think the heads are a better optio My 1991 Ford Mustang 5.0 liter V8 ( LX ) had a compression ratio of ( 9.0 to 1 from the factory ) ( 8th character of VIN was an E ) What is the spark plug gap for a Ford 302 V8? .044 inch in.

1974 ford: .It..8.5 to 1 compression ,dished pistons I have a 1974 ford 302 engine.It has 8.5 to 1 compression ,dished pistons and the 2v head code.Is there a head that I could install and raise the compression to 9 to 1.This engine is in a 1950 Ford co The 302 cubic inch engine was introduced in 1968 to the Mustang, one of seven variations of V-8s were available in the '69-'73 models. It was designed with Federal emissions regulations in mind. Although it is a derivative of the 289 mustang, some parts are not interchangeable. In fact the block of a 289 cannot be used without some machining Compression is this cylinder head's only advantage. This makes it a good cylinder head for any 289/302 Ford if you want to pump up the power a bit. Otherwise, the 4V head has the same size valves and ports as the 289. The 302-2V head for 1968 has larger 63-cc chambers to lower compression and reduce emissions COMP. RATIO: 47cc =10.94-1, 56cc =9.98-1, 60cc = 9.61-1, 64cc = 9.27-1, 70cc = 8.8-1 So there you go. For this particular 408 stroker (which is 4.030 x 4.000), which has dished pistons, a 60 cc head will give you a 9.61:1 and a 64 cc head will give you 9.27:1. Although the graph is not a straight line, a 62 cc head would be roughly at the.

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Compression Ratio : Total Displacement (in. 3) : Total Displacement cc's : The cc for the piston is entered as a positive number on a -cc Dish or Flat top piston and a negative number on a dome piston. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume Chamber Size: Stock (289 = 54cc, early 302 = 59cc, E7 & 351W = 64 cc ) Hardware: Complete Rocker Mount Type: Pedestal or Screw-in stud Runner Volumes: Stock Valve Sizes: 1.94 intake 1.60 exhaust 50 State Smog Legal: Depends on stock configuration. Notes: P.C Automotive also offers early 289, early 302, E7, and 351 W heads. Flow data listed on. Axles Ratios: Top of 1972 3.00 Axle Ratio Other Options: 200 CID Six Engine 250 CID Six Engine 302 CID V-8 Engine SelectShift Cruise-O-Matic Transmission Floor Shift on 3-Speed Manual SelectAire Conditioner Rear Window Defogger Tinted Glass Power Steering Deluxe Seat Belts Bumper Guards Door edge Guards Heavy Duty Battery Heavy Duty Suspension.

With a curb weight of 3631 lbs (1647 kgs), the Mustang 5 Boss 302 has a naturally-aspirated V 8 cylinder engine, Petrol motor. This engine produces a maximum power of 446 PS (440 bhp - 328 kW) at rpm and a maximum torque of 515.0 Nm (379 lb.ft) at rpm GENERAL SPECIFICATIONS. Compression Pressure psi. (Sea Level) @ Cranking. (1) Read tension immediately after belt is installed, before it stretches or seats in pulley grooves. (2) If less than 40 pounds, readjust to 40-60 pounds. (4) If less than 75 pounds, readjust to 90-120 pounds. (3)If less than 90 pounds, readjust to 90-120 pounds This gave the engine a compression ratio of 9.2:1 which was higher than the previous year of 8.4:1. The 302-cubic-inch (ci) engine was rated at 200 horsepower (hp) at 4,000 rpm. This was 10 horsepower lower than the previous year but the torque rating of 285 ft.-lb. at 3,000 rpm was raised by 15 ft.-lb Enter the measurement designation in either inches, 1, or millimeters, 2. Enter the cylinder bore diameter. Enter the piston stroke length. Click on Calculate Displacement. The value will be returned in CR, Compression Ratio from ALL input values excluding Total Volume. You can also calculate Total Volume from bore, stroke, and CR

Notwithstanding the compression ratio and other factors, the characteristic that determines the maximum advance setting is the shape of the combustion chamber and the position of the spark plug. Below is a table indicating the desired maximum advance for the various common combustion chamber shapes. Type of chamber Example Max advanc 1969 - 1974 are the only years that the 351W has bigger valves and ports than the 302. (Castings C9, D0, D1, D2, D3, D4) Your compression ratio will drop, too, so the power you gain from the improved flow may be offset by the power(and efficiency) you lose by lowering the compression The main bearing caps were stronger, and the connecting rods larger than those on the 289 and 302. Ford produced the 351W from 1969 to 1974. Enthusiasts consider the 351W superior to the 351C due to the 351W's heavier block and larger valves and heads. Two-barrel 351s generated 250 horsepower, and four-barrel versions wielded 290 horsepower Mercury Comet GT 302-2V V-8 Select-Shift automatic (aut. 3) , model year 1974, version for North America U.S. (up to September) manufactured by Mercury in United States ; 2-door coupe body type; RWD (rear-wheel drive), automatic 3-speed gearbo

Horsepower on stock 302 1974 Maverick/Comet Forum

By comparison, in 1971 the 460 was rated at 365 hp @ 4600 rpm. Bear in mind that these numbers compare a 400 with a 2V carburetor and 9.0:1 compression ratio to a 460 with a 4V carburetor and 10.5:1 compression ratio. 1971 is an interesting year to compare because the 400 had its original flat top pistons and a decent compression ratio If your engine has these pistons, expect the compression to be around 8.0:1 which is at least 1.5 ratios away from where it needs to be. The easiest way to improve compression is with a set of 64cc chamber cylinder iron Vortec heads and that 0.015 head gasket, which will push the compression up to 9.0:1

1978 302 Compression Ratio Ford Mustang Foru

Compression makes a big difference in the way an engine performs, raising the compression ratio is the single most important step to take towards improving the performance of these engines. Raising the compression ratio of any low compression 351C shall increase the engine's output by about 20 horsepower and improve the engine's responsiveness Tip 6: Double Check the Compression Ratio. Whenever you increase stroke, the compression ratio with the same cylinder head chamber size increases as well. Although flat top pistons with most 302, 331, or 347 engines yield a friendly 9 to 10.5:1 compression ratio, the same flat pistons with a stroker Windsor can make up to 13:1 plus The Ford 351 Windsor was first introduced in 1969 and was quite a breakthrough in regards to the ways Ford produced its V8 engines. When Ford introduced the 302 to replace the 289 the engines were very similar and even used the same pistons.. The 351 Windsor was in a league of its own because of its heightened deck block, larger connecting rods and much beefier main bearing caps I have some gt40p heads that I was going to enlarge the head bolt holes so they would fit a 351w. My 351w is a 1974 with stock heads and pistons. running this heads for 2 years plus on the race track on a stock bottom end ,292 comp. cam ,2800# mustang. best et 11.13 and no head problems yet to date. best stock ford ever made Ford's familiar 302 cu. in. (4,942 cc) V8, meanwhile, which in the sixties had advertised as much as 306 gross horsepower (228 kW), had plummeted by 1979 to less than 140 net horsepower (104 kW). It was not until the widespread proliferation of electronic fuel injection in the 1980s that net power outputs again began to climb

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Ford engineers reduced the compression ratio by using a piston with a compression height that was too short and this led to an excessive deck clearance of 0.067″ compared to a 351-2V at 0.035. In 1971, this method of reducing compression was enough due to the higher-octane leaded fuels In 1971, the Boss 302 and Boss 429 were replaced by the Boss 351. The engine that powered the 351 was a high-output Cleveland V8. The cylinder heads were almost identical to the Boss 302's and flowed just as well. Unlike the Boss 302, the Boss 351 featured a solid-lifter cam with an aggressive profile Calculate Engine's Compression Ratio (CR) Get accurate compression without the guesswork! Get your engine's optimal compression ratio and total displacement in no time flat! Just complete your engine setup, click calculate, and you're on your way to maximum performance. Use (-) for Dome and (+) for Dish

Common engine building lingo would refer to this as 10 in the hole. This was a critical measure in achieving the desired 9.5:1 compression ratio and proper combustion chamber quench. The factory deck of the Ford 351M/400 is 10.297 (distance from crank centerline to cylinder head deck). Augie Steinert, the machinist and shop owner on this job. In our case it was a set of 1974-casting 360 cylinder heads that have 2.02 valves, double valvesprings, some port work, and looks like maybe a bit shaved, all for $200. Later, these will go to a machine shop to be cleaned, magnafluxed, and flow tested; once that money is spent, we'll know whether we got a steal or got took 302, Early 351W Heads, Windage Tray, Edelbrock 289 Performer intake, Holley 600 Carb w/1 spacer, T5 Transmission, NPD 1 Lowering Springs, 1 Mid-Eye Lowering Leaf Springs, 17 04 Bullitts, 3.00 8 Rear, Granada Front Brakes. Typically we would back timing out a couple degrees or so when running a higher compression ratio on pumped gas. We. Find FORD 5.0L/302 Pistons and get Free Shipping on Orders Over $99 at Summit Racing

Ford Small-Block General Data and Specifications

Crankshaft Coalition Wiki -- hot rod tech article Let's get started: 1. Warm Up the engine. It's standard operating procedure to perform the compression test with the engine slightly warmed up but not hot . If your specific Ford 5.0L engine (4.9L engine or 5.8L engine) doesn't start, don't worry. You can continue with the other steps. 2. Disable the fuel system

Ford Engines - Sircar Engine ReconditionersC9OE 302 Heads ? - Ford Mustang Forum

The 11:1 compression ratio combined with forged pop-top pistons, aluminum high-rise intake manifold, steel crankshaft, solid lifter camshaft, four-bolt main caps, and square port closed chambered heads offered a higher horsepower option. The Z/28 was only offered in a coupe version with a 302ci/290 hp V8 topped with a 780 cfm Holley carb 351 Windsor Performance Specs. With the introduction of the 351 Windsor in 1969, the 2 barrel carburetor version was rated at 250 horsepower and the 4 barrel carburetor version was 300 horsepower at 5400 RPM, with peak torque of 380 lb-ft at 3400 RPM for the 4 barrel version. The horsepower ratings, however, were changed in 1972 as a new way of. The 351 Cleveland was introduced in 1969 as Ford's new performance car engine and was built through the end of the 1974 model year. It incorporated elements learned on the 385 big-block series and the Boss 302, particularly the poly-angle combustion chambers with canted valves and the thin-wall casting technology Before selecting a piston, the desired compression height must be known. As shown, compression height is the distance between the centerline of the pin bore and the top of the piston. To determine the compression, three things about the engine must first be known: block height, connecting rod length and crankshaft stroke length Stock pistons aren't the right choice, even in a mild build. I used Keith Black KB-167 hypereutectic pistons. These are much stronger than stock pistons and give a higher compression ratio. On my engine, the compression ratio worked out to 10.1:1. For rings, I used KB's matching moly ring set. I used high swirl 318 (#302) castings

The base three-speed manual transmission was standard in six-cylinder Mustangs. This was a basic Ford Toploader with a floor mounted shifter. One interesting feature was that the first gear wasn't synchronized. For the 1966 Mustang, Ford added a synchronized first gear. The gear ratios also changed between the two years. First Gear: 2.7 The Mustang II Organization, Since 1997. Home of the Mustang II and Lost Pony Gallery, The Message Exchange, and now The Official and Original Registr Large chambers will lower your compression ratio. I checked the compression in my stock 87 351 police motor. 125 - 135 for all cylinders. A 5.0 HO should have close to 150 from what I understand Re: compression ratio 10.5:1 measurements please. pinto 2L 2014/02/28 15:45:21 ( permalink ) 0. As said here, plenty of compression ratio calculators out there on the net. Standard bore is 90.8mm. Standard piston to block deck is 0.5mm (mine came up 0.4) Standard combustion chamber on an unshaved head is 48cc. Standard head height (head face to. FORD 302 ENGINE. We took the iconic Ford 302 engine and brought it's performance and quality to the next level. There's other companies that would sell you something with less sexy we wouldn't let you down at West Coast Engines! 350 horsepower and 350 torque on the dyno and it's built for daily and long distance street driving

Ford Mustang Forum - C9OE 302 Heads

302 Engine Specifications Classic Car

Ford's 2.0/2.3/2.5 litre Lima engine family. These motors are commonly referred to as either the Lima or simply the 2.3 SOHC (Single Over Head Cam) engines. They started life based on the German designed 2.0 EAO Sport motors that were first introduced to this country in the Mercury Capri's from the early 70's Here's a chart that should help when converting engine sizes. For example, if you want to know how to convert 6.2L into cubic inches, you would just need to complete some simple math: 6.2L x 61.01 = 378.262. So, 6.2L is roughly equivalent to 378 cubic inches An engine compression test, is the most practical way, to learn about the mechanical condition of your engine. Because, doing a engine compression test, will help you locate; potential internal problems, affecting engine performance. Running rough or losing power, there may be a lack of engine compression, in one or more cylinders The first two digits were the production year, the second two digits were the model. The first digit (always a letter) was for the decade - C=60's - D=70's - E=80's. The second digit (always a number), was the production year. For example: C3 is 1963 - C6 is 1966 - D7 is 1977 - E0 is 1980 - E2 is 1982. Cylinder Head Flow Ratings

Ford 302 V8 Engine Specs, 302 Engine Information, Firing

The 429 was gone, and lower compression ratios took their toll on horsepower as the straight-six engine was down to 98hp, the 302 had 140hp, and the two optional 351s had either 200hp or 275hp. Solid-lifter camshafts were no longer offered, and Ford, like the other manufacturers, was getting ready for the advent of unleaded fuel Firing Order, Small Block & SVO. This is one of the most common questions asked by our Ford customers. The firing order for the early 221-302 engines and the early 5.0 engines is 1-5-4-2-6-3-7-8. This is the firing order for all prefix 31 cams and is the standard replacement cam for all early engines

If you cannot find your engine, find an engine with an equivalent compression ratio. What you really are looking for are 3 things: (A) the average should be at least 70 percent of the suggested cranking value, (B) no cylinder should deviate from the average by more than 15 percent (10 percent would be better), and (C) the value read on the. Gear Ratio: Engine Characteristics: SMALL BLOCK: BIG BLOCK: Street Rodder™ Stock to 260° Stock to 3.23: Smooth Idle, Stock Compression: 1500-1700 : 1700-1900 : Saturday Night Special® Stock to 265° Stock to 3.23 : Smooth Idle, Stock Compression: 1600-1800 : 1800-2000 : Breakaway® 265° to 280° 3.00 to 3.73 : Fair Idle, Mild Modifications. Pistons were set up .010-inch in the hole to keep the compression ratio at a pump-gas-friendly 9.0:1. Domed piston volume can only be estimated by the manufacturer, so Petralia sets the piston up in the bore to find the true dome volume to assist in calculating actual compression ratio. At .300 below deck, the dome measures 22cc's

Ford engine specifications

Production Numbers/Specifications. 1. F. 2. H (351 Windsor - 5 valve cover bolts) 3. H (351 M - 7 valve cover bolts) - 1979 would be the final year for the Ford LTD II-based mid-sized Thunderbird. - 955,032 Thunderbirds were built during the three year cycle of this body style, making it the most popular in the history of the line Carburetor Size Calculator. This is a simple calculator for determining the approximate size of a carburetor. The Size of the engine can be in Cubic Inches or Cubic Centimeters. The RPM entered should be the maximum RPM the engine is to run (you know that RED LINE on your tachometer). The Volumetric Efficiency is a bit more tricky and is at. It's important to maintain that pressure under all load conditions, because if it drops off at higher rpms, you run the risk of going lean. As a general rule of thumb, most stock engines use roughly 14.1:1 to 13.4:1 air/fuel ratio at idle and slightly richer at high rpm V8 Ford and Chevy 48 IDA and IDF Kits. 289/302, 351, 429/460, Etc. V8 Chevy IDF and IDA Kits. Small Block and Big Block Chevy * Do a compression test..If the compression is off by more than 10% per hole you will have a really bad time tuning the carbs. Another good option is to install a Halmeter AF30 Air Fuel Ratio Gauge to help you.