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Originally Posted by 400 Lemans
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This is very helpful. It was installed dot to dot. I am not an advanced engine builder and really only know the very basics. I believe I can take the timing cover off with the engine block in the car and check this
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Originally Posted by ta man
I agree do this. Engine should work pretty well. What gearing convertor and weight of car?
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The gearing is 3.55 in a 68 firebird which I believe is around 3,300 lbs. It has a 200-4r transmission. I had a TCI saturday night special convertor (1,600-2,000 Stall) but just changed it to a TSI Race convertor (2,800-3,200) this weekend. It performs a little better but still not an impressive improvement for the time put into it.
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Originally Posted by Squidward
My best et was 14.04 with awful air and embarrassing 60 foot times. I think mph was something in the 100 ballpark. This was during my last track trip years ago, where I had just got into data logging my runs and adjusting afr settings for best et/mph. I have no problem admitting I suck as a driver. But I have no doubt I could've had 13's.
The rest of the package was th350, 2000 stall converter (more stall would've helped), and 3.73 in a 1st gen. Stall and gears with a cammed up 350 really helps. The power band really comes in above 2000 rpm.
As a point of reference, I broke out of the 15's with a 69 350, stock 47 heads, Summit 2800 cam, same trans/2k converter, and 3.23 gears. I can't remember if I was running a qjet or Holley then.
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I could be selling myself short and plan on seeing what the 1/4 mile time will be at the track this summer. This is very helpful and gives me a reference to see if I am matching up. Part of me wonders if I am just use to the low end torque when I built a 302 67 mercury cougar- that seemed to perform a lot better than this 350 engine which has a mid to upper power band camshaft. However, I've read that pontiac 350s are suppose to have a lot of torque so that has me scratching my head.