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Forum: Supercar/Musclecar Discussion 02-22-2004, 02:56 PM
Replies: 5
Views: 1,366
Posted By probert
Re: Compression vs Octane

I'm running a Comp Cams XE 274. I believe it's about 480 lift with 230 duration? By the way I can't endorse these cams enough
Forum: Supercar/Musclecar Discussion 02-22-2004, 02:39 AM
Replies: 5
Views: 1,366
Posted By probert
Compression vs Octane

I'm currently running flatop pistons in my 350 chevy with a compression ratio of about 10.3:1. If I change to a .100 dome piston and bump the compression up to 11.3:1 can I get away with 93 octane...
Forum: Supercar/Musclecar Discussion 01-13-2004, 03:50 PM
Replies: 12
Views: 3,644
Posted By probert
Re: Desktop Dyno Woes

I ran the Dyno test again with the head and cam files from the unofficial dyno2000 page(an enormous help, thankyou) and the max hp came in at 360 and the max torque at 400ft lbs. This seems more...
Forum: Supercar/Musclecar Discussion 01-09-2004, 04:54 PM
Replies: 12
Views: 3,644
Posted By probert
Re: Desktop Dyno Woes

Ok, back to the dyno thing...I entered "low performance, large valves" 1.94 int and 1.5 exhaust, did the compression math and it gave me 10.48/1 at .028 deck height and .025 head gasket.13's? Man....
Forum: Supercar/Musclecar Discussion 01-09-2004, 04:33 PM
Replies: 12
Views: 3,644
Posted By probert
Re: Desktop Dyno Woes

The Hawks? Do they still have a team?? Hahaha.....ok, you guys kicked my Wings' butts the last time so I can't laugh too much.....nope, I ain't Bobbie but that's where the nickname came from. Go...
Forum: Supercar/Musclecar Discussion 01-08-2004, 08:58 PM
Replies: 12
Views: 3,644
Posted By probert
Desktop Dyno Woes

I had some great replies to my last post so here goes again...I have Dyno2000 version 3.1 on my PC and I'd LUV to believe what it's telling me...414hp at 6,000 rpm??
It's a 355 with a 600 cfm...
Forum: Supercar/Musclecar Discussion 01-07-2004, 10:10 PM
Replies: 12
Views: 3,492
Posted By probert
Re: Head Numbers

Oh it's a Chevy alright......and I put lots of orange paint on it just so no one gets confused! https://www.yenko.net/ubbthreads/images/graemlins/haha.gif
Forum: Supercar/Musclecar Discussion 01-07-2004, 07:22 PM
Replies: 12
Views: 3,492
Posted By probert
Re: Head Numbers

I bought the car a couple of years ago, a 69 Firebird, not so much for the engine but the owner told me not to scrap it.Despite it's looks he assured me it was a strong runner, just needed some...
Forum: Supercar/Musclecar Discussion 01-07-2004, 04:53 PM
Replies: 12
Views: 3,492
Posted By probert
Re: Head Numbers

There's about 1/8" gap between the valves so it looks like they ARE 1.94's. This is a sweet running little engine and I originally just wanted to freshen up the bearings and rings. I'm pretty bummed...
Forum: Supercar/Musclecar Discussion 01-04-2004, 06:50 PM
Replies: 12
Views: 3,492
Posted By probert
Head Numbers

The cylinder head numbers on my sbc are 3890462. Any charts I've seen say they are 2.02 valves with 64 cc chambers. I tried measuring the valves without removing them and they appear to be 1.94. Were...
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