I'm in the process of building my car for a turbo. the engine will be a 383 with compstar forged crank and 6.0 H beam rods with -31cc diamond pistons. I'm going with a tc-76 to start with and when I'm tired of it going to move to an 88+mm turbo. This is strictly bracket. What sounds like the best route?

 

1.80 gear glide...Looking for 800-900hp with the 76mm and maybe 1100+ with the 88mm? The biggest tire you can fit and goodluck. This is probably the most weather sensitive combo to have for bracket racing. Run VP Q-16 fuel also. Goodluck

 

Thanks. My times cant spike or fall must more drastically than they do now unless I burn the tires off it.

 

A glide will be more consistent and easier to hook. Plus the benefit with the glide is you can give it more power faster and not go to the bumper.

I didn't play with my suspension much this year just set it at the starting points that Midwest chassis gave me and I was going 1.31 60's and the front was only lifting about 12-16". Unless it is mainly a steet car I'm keeping a glide.

 

For consistency, use a glide and get into high gear as quick as possible. It won't give you the fastest time but the fastest time doesn't win bracket races.

The way my car is currently geared, I do my 1-2 shift around the 330 mark then pull to the 1/4 mile in high gear from there.

Watch a SuperGas car launch. They need to be deadly consistent to run the same number every pass. They use throttle stops to adjust their ET but right after they launch, they go onto the throttle stop. Sometimes they're on the stop before the 60' mark. While on the stop, the tranny is shifted to high gear mainly to keep from spinning the tires when the engine comes off the stop then they run most of the track in high gear. This is all done for consistency. Without using a throttle stop, it's just called shifting on time. Instead of shifting when the shift light comes on, the tranny is shifted from 1 to 2 at a specific time. 1, 2, 3 seconds after launch etc.

If you're after low ET then a 3 speed tranny may work better. The deeper first gear offers more torque multiplication off the line and you rev it out to the top of each gear to make the engine work at high rpms where it makes the most HP all the way down the track. However if the engine produces too much torque, the increased multiplication from a 3 speed can easily lose traction off the line. That's why the powerglide can offer a softer launch. It's like using a 3 speed and launching in second gear.

 

Wait to you turbo charge. Can I race you first round? Glide is a better tool to bracket race with.

 

turbo is going to complicate things..........IMO

 

I agree! A turbo setup isn't exactly what I would call bracket friendly.

Randy

 

I've seen a 125mph hot weather turbo car go 132+ in cool weather... How's that for consistant power.

 

I know its not the best for bracket but it's what I want to do so I'm going to give it a shot. There is a turbo pro mod that runs at my local track that is crazy fast. I know I won't be as fast but nobody else runs them and I would like to be different from the rest of the crowd. I know the reason they don't run them is because there are less consistent but I want to give it a shot.

 

Would the supercharger make for a better bracket car since the superchargers rpm is directly proportional to the engines rpm?

 

no NA is best and Alky is better.....

sell it all and get ron flying toilet

 

I kind of figured it was because the guys the run NA go more rounds. Whats all involved in alky? I've never quite figured it out.

 

VP is even saying Q16 could be better than their Methanol...It's extremely consistant, doesn't eat the oil, and it makes about 6% more power than regular race gas. Reason I mentioned it.

 

Noted. I'll ask and see if I can't get some opinions from locals running it. Thanks for the heads up.