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Is low compression ok?
#1
I have built a 415w with 8.25:1 compression, AFR-205, and a hydraulic roller 232/240@ .050-114'. When the money is available, I will be adding a centrifugal supercharger and EFI. Until then, can I run it as is?
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#2
Sure, can't see why not.
It may be a bit doggy, off the bottom especially.

My high school ride, a '73 Torino fastback, had a junkyard stock, unknown mileage 351w with C9 heads, a 230* @ .050 Crane cam (can't remember which one but it was a little lumpy) and a single plane Offy/Holley 750VS combo. Oh, and a stock torque converter in a stock, slow shifting FMX.
It was probably, at very best, 9:1. And it was a slug off the bottom. Wouldn't spin tire.

All the wrong parts for what I used it for.

Turned 15.40s @89 in the quarter w/ 4.11's out back.

With your heads and cubes, it might be surprising as-is. Add your intended squeeze, and I'd expect to be really impressed!

Remember, those stock, smogger 460's starting in '73ish were something like 8:1 advertised. I've heard that the actual calculated figure was a little less than that. The 460 that's built for my car is a stock dished piston bottom end with early (C8) heads. Might be 9:1, never bothered to calculate it yet.

Pete - MotoArts Decals and Signs
'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...
'90 Mustang 7-Up 5.0 ragtop, rolling beater
'66 Sunbeam Tiger Mk.IA, survivor
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#3
Might be a bit soggy.. Extra torque from the long stoke will help. Not as bad as a big cam in a 8:1 4V cleveland.

1973 Mach 1 Q code 351 4V, 9A paint, standard interior, 3.50 rear, C6 trans.
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#4
There shouldn't be anything wrong with that. It should still get out of it's own way. Big Grin

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#5
Im not sure if I should put it in now or wait till I had the supercharger.
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#6
Ha, to me it would be like sitting with a huge bowl of fresh Halloween candy and a cold gallon of milk in front of me...
EAT IT!!!

No question there! Smile

Pete - MotoArts Decals and Signs
'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...
'90 Mustang 7-Up 5.0 ragtop, rolling beater
'66 Sunbeam Tiger Mk.IA, survivor
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#7
I'm just asking because that's the car I'm going to set up with EFI. The motor in that car is a 393w with AFR-185 heads and I slightly milder cam with an Air Gap intake.
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