1972 400m ford compression test|400 compression ratio. : commercial You can do 11:1 with better quench (zero deck and Edel heads), picking a cam with lower DCR at low revs, and a properly matched converter to avoid tip-in and lugging det. . webCamille Lou rayonne à Zanzibar Son cliché très sexy dans une grotte sur lequel elle avait posé sans haut pour son nouveau compagnon - le coach de surf Romain Laulhe - a fait .
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You can do 11:1 with better quench (zero deck and Edel heads), picking a cam with lower DCR at low revs, and a properly matched converter to avoid tip-in and lugging det. .Can anyone tell me what the compression test should read [ft. lbs.] on my 400? .
Can anyone tell me what the compression test should read [ft. lbs.] on my 400? Thanks Fred I have a 79 F-150 4x4 with a one year old rebuilt 400 with less than 10000 miles on it. It is supposed to have badger flat top pistons in it with a compression ratio of somewhere .
Tom Monroe's book on page 37 and again on page 38 says 1972 through 1980 400s have 8.4:1 compression ratio . the 1971 is shown at 9.0:1 though. The '71s had the flat . Hey yall, just tested the compression on my motor yesterday and got 150 psi per cylinder. How does that sound for a 400 and should I just stick with the heads already on it and .
Your dynamic compression ratio will be near 8.5 to one. You static compression can be calculated if you know your cam specs and the pressure from a cranking compression . when you pump the comp up on the 400 and use any thing but an open chambered head you need to watch the deck height. With stock or stock type pistons on most .
Run your test, giving each cylinder enough compressions to stabilize the reading - generally 3 to 5 compressions. Compression will vary based on SCR and cam timing. .
Like the 351C, the 400 had to be quickly adapted to the ever tightening emissions standards, so minor changes occurred in 1972. Ford reduced the compression ratio slightly to 8.4:1 by using dished pistons. For . tried the search function---got way too confused for my own good...ran a compression test on my F250 today (400 cid) and got numbers ranging from 95 psi to . FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - 360 compression test - I just ran a compression test on my 360. Just bought the truck, engine is original as far as I know. The passenger side was 150, 150, 150, and 135 psi. The driver side was 120, 95, 90, and 45 psi. Do you think there's a good chance. 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - 400 compression psi? - tried the search function---got way too confused for my own good...ran a compression test on my F250 today (400 cid) and got numbers ranging from 95 psi to 125psi. What numbers are they supposed to be? still seems to run strong, other than the.
1967 - 1972 F-100 & Larger F-Series Trucks - 360 COMPRESSION - Hey all! lookin for some help! 72 f100 with the 360..what should be the compression be I'm getting between 90 and 100psi. Thanks in advance!!!
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ford 400m heads and compression ratio
1987 - 1996 F150 & Larger F-Series Trucks - 302 Compression Readings - So, I think my 302 engine (149k miles) is toast. I'm trying to restore this truck since the best vehicle is the one you've got, and I finally got around to doing a compression test before I dump any more money into it. My rationale, though, is that. 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Hi compression pistons 400 ci?? - I am looking for high compression pistons for my '79 400 cui. F150. I have contacted parts stores and several online engine parts companies with no luck. Can anyone tell me where I can find higher compression pistons for this engine? The.
Run your test, giving each cylinder enough compressions to stabilize the reading - generally 3 to 5 compressions. Compression will vary based on SCR and cam timing; Performance/race engines 170 to 230 psi or more; Stock engines ~130 to 200 psi; All cylinders withing 5% (performance) or 10% (Granny)The 1971 and 1972 M-block 400 makes a good example to compare gross (260hp) and net (172hp) power ratings. There was no significant change in the 400’s specification (compression ratio, camshaft profile and timing, etc.) from 1971 to . So I decided to check all the plugs, pistons and compression test all the cylinders as well. Plugs looked pretty good though quite a bit a variation on them, especially on the tip of the porcelain, some were dark brown/grey and others still showed lots of white. . 1987 Ford Bronco, 460 swapped with a ZF5, EFI heads and intake with a Holley .
335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Compression on 400m - Hey yall, just tested the compression on my motor yesterday and got 150 psi per cylinder. How does that sound for a 400 and should I just stick with the heads already on it and port bore em or what? Any suggestions? Thanks
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) - '88 351w Compression test results, specs? - Hi, I went to look at an '88 van with a 351w, we did a compression test and got: 1 - 180 2 - 185 3 - 190 4 - 170 5 - 168 6 - 170 7 - 170 8 - 173 We think this is pretty good, number 3 seems a little high compared to the.1967 - 1972 F-100 & Larger F-Series Trucks - 390 Compression Test PSI - I was talking to my buddy the other day and he had some Mechanic come and check out his 72 F-150 Custom with a 390. . 1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck 390 Compression Test PSI. Reply Subscribe . Thread Tools Search this Thread #1 . This keeps a nice flat area under the squish/quench step so that action remains strong while not leading into compression ratios that are unsustainable. A great case in point is Ford's much maligned 400 with the piston crown .080 inch down the bore, that engine will ping on 110 octane av-gas with only an 8 to 1 compression ratio.
335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Compression Test help 400 - Just ran a Compression testdoes this numbers sound right 1 = 160 2 = 151 3 = 150 4 = 155 5 = 155 6 = 150 7 = 152 8 = 154 I was going to replace all the gaskets and the valve seats. Just want to make sure that I had good comp. so I didn't start. 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - 400 compression ratio - Does anyone know the compression ratio on a 1976 400 out of a car. I know the compression ratio changed a lot throughout the years.
335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Interesting '79 400 compression & vacuum test results - I finally had a chance to purchase a nice compression tester and a vacuum gauge. I was itching to know the present condition of my '79 F250's 400. Went to hook up the compression tester, and here is what I got: #1 -.
Cylinders & Compression Test Results: 1972, Ford Mustang Grande 302 4 - 140 V 8 - 130 3 - 135 V 7 - 120 2 - 30 V 6 - 120 1 - 30 V 5 -120 Im not getting good results for cylinders 1 & 2:coffee, and the guy I work with told me, i have burnt valves for those two, and I'm going to need to pull that side head off and replace valves. . 335 Series- 5.8/351M, 6.6/400, 351 Cleveland - Just did a compression test. - I have a 79 F-150 4x4 with a one year old rebuilt 400 with less than 10000 miles on it. It is supposed to have badger flat top pistons in it with a compression ratio of somewhere between 9:1 and 9.5:1. I haven't been happy with the.
compression test 400
I have a ford 460 that was re-built by a machine shop before I bought it here are the specs: 460 .030 over all stock bottom end, D3VE heads stock, 9-1 compression, unknown cam grind but I was told it was a melling rv grind. My question is I did a compression test and only came up with 130 pounds pressure in all 8 cylinders. 1948 - 1956 F1, F100 & Larger F-Series Trucks - compression test on 59 - 292 Y block - Anyone know what the pressures should be? I tested all 8 and get 75 to 80 pounds. I got 2 dead cylinders and i have spark at the plugs, im gonna put a new set in and hope that clears the problem but i doubt it. Thanks, Don 1973 - 1979 F-100 & Larger F-Series Trucks - 78 ford 400 Compression Ratio - Hey guys i have a question that i just cant figure out. im trying to figure out my current compression ration on my 400. bin on the computer searching for a couple hours an i cant really come up wit anything. theres gotta be some good guys.
1967 - 1972 F-100 & Larger F-Series Trucks - Compression tested my 352. - Compression tested the 352 in my 1967 F100. Averaged between 90 and 125psi with most in the 115psi range and two cylinders at 90 psi :(. So looks like a rebuild is in order. I'd like to upgrade it while its out, is it worth messing with the. Compression should be 400 plus or minus 10%. Might be lower but you are mainly looking for close to 400 or all cylinders being within 10% of each other. You symptoms list certainly points at a compression issue. The adapter in that picture is what I use with my compression tested but a GP can be adapted as well.When unleaded fuel was mandated nationwide in 1975, Ford started retarding the M-block’s ignition timing, and eventually Ford dropped the compression ratio all the way down to 7.3:1 (1978 400s in cars). The 351M was introduced in cars with an 8.6:1 compression ratio in 1975, then dropped to 8.3:1 in 1977, then dropped again to 7.75:1 in 1978. Ford Inline Six, 200, 250, 4.9L / 300 - 1983 300 6 compression test - Hi, i have a 1983 ford inline 6. I did a compression test on it today and the first cylinder was 80 psi where every other one was 158 psi. So i redid the first on with a little squirt of oil down the cylinder and the compression was still 80 psi.
Repeat test steps 3 - 5 on the remaining cylinders.. Let's examine your test results: CASE 1: One or two cylinders had a much lower compression value than the others.Up to a certain range, this could be normal. To further interpret these test results go to: Interpreting The Compression Test Results. CASE 2: Three or more cylinders had almost no . 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.
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1972 400m ford compression test|400 compression ratio.