Need Gear Recommendation
 

You have all helped me with my stocker, I am getting closer to the index.But need more help.what I have is.
76 Camaro
350 cid
287 NHRA rated HP
350 turbo with 275 First
5.13 gears
Mickey Thompson ET Slicks 9x30
we ran a 12.80 @ 102 yesterday
shifting @ 7k
went thru the lights @ 6500
60ft 1.71
I have the Cal Tracs bars and springs
Thank You all I am happy I finally got in the 12's

Re: Need Gear Recommendation
 

I'd consider going to a 2.52:1 low gear, and a 5.38:1 rear gear.

Re: Need Gear Recommendation
 

Alan I dont want to spend any money on this trans, would the 5.38 work for now I am thinking of a Pro trans later I am not sure I dont know what first gear ..

Re: Need Gear Recommendation
 

what type of converter?
Looks like you ned about .15 just in 60'
5.38 won't help that much

Re: Need Gear Recommendation
 

Sounds like you're close, but try short shifting it about 6500 and seeing what happens. I usually don't turn a 327 that high through the gears. 5.38's to 5.13's isn't that different-5-7 % or so. You do need 60 foots in the 1.55-1.58 range, though. What class are you shooting for, and what index?

Re: Need Gear Recommendation
 

Yeah, the 1-2 shift probably needs to be about 6200-6400, at most.

The 5.38 will help if you swap to a 2.52 low gear, what's going on here is you have way too much drop between 1st and 2nd, the car is not moving fast enough, and the RPM drops too far.

Re: Need Gear Recommendation
 

Think Mark is on it...converter or something else needs to be addressed. That 60 ft has to get better regardless of which index you're after.

Re: Need Gear Recommendation
 

Carb tuning is a big factor as well!

Re: Need Gear Recommendation
 

Greg its is a 350 cid the class is I/SA 12.30 index,

Re: Need Gear Recommendation
 

converter is ATI 8inch Treemaster Salesman Charlie Plott
The 2 step was not hooked up, seems to do better when I flashed @ about 2800