[johnta1]

With that slip, I wonder if your carb is too small? You seem to do good until the last half of the quarter? You're running gasoline also right? Not alcohol?

[Matt1970gto]

Originally Posted by johnta1

Not bad!

That intake looks like it would be good with a 8-71 blower?



I'm not up on throttle stop workings. When the stop comes on, does the rpm's drop to idle or stay around 3500/4500 rpms?
Also when does yours come on like .2 from launch or later?
From ET slip must be before 60' for sure. Comes back on around .3/.5 into the 'stop'?

My thinking is maybe the rpm's are too low when coming off stop and the car takes too long to get back in power range? (like around 7000RPM?)

Originally Posted by johnta1

With that slip, I wonder if your carb is too small? You seem to do good until the last half of the quarter? You're running gasoline also right? Not alcohol?

Yes for gas, when we had my engine on the dyno Trevor Wiggins ( get’m carbs) spent the day with me. We tried a 1450 braswell that belongs to the engine builder first & his fuel renegade 120. Then switched to my carb & fuel ( fuel factory f14). My carb is a get’m 1250 that’s a twin to dads. Trevor also brought a 1350. Both get’m carbs made more hp than the braswell with the 1350 making 6hp more than my 1250. Trevor was at that track last weekend & watched us run, we spoke about putting a bigger carb on my car.. Either a 1350 four hole or a 1400 cfm twin blade

[johnta1]

Are you in high gear when the throttle comes back on?

[Matt1970gto]

Originally Posted by johnta1

Are you in high gear when the throttle comes back on?

No sir, I’m in first the entire time. I shift second then third once I come off the stop.

[johnta1]

This could be a whole new thread.



I would think that for consistency and stuff that you would be at least in 2nd gear?
The chassis unloading then loading, time of shifts, etc. would be not very consistent. The engine having to rev then idle then rev also.

[Matt1970gto]

Originally Posted by johnta1

This could be a whole new thread.



I would think that for consistency and stuff that you would be at least in 2nd gear?
The chassis unloading then loading, time of shifts, etc. would be not very consistent. The engine having to rev then idle then rev also.

It’s possible, most people that have power glides shift while on the stop. I think if I tried to manually shift even once while on the stop I would be less consistent. Especially since I’ve been doing it this way over 20 years. In 2016 I finished 4th in div2 Ihra & 6th in div2 nhra points & didn’t have a shift light. Thinking back on it maybe I should disconnect or cover up my shift light now lol.