BB Chev HP

[Dano]

Any suggestions on baseline HP needed in A or B/SA?

[GTX JOHN]

I would guess 625 to 650 for 427.....But I am a Mopar
racer. It would depend on whose Dyno too.

[Mike Mans]

Of course every dyno can be wildly different, so it's hard to say very accurately. But my general rule of thumb is that if you can make 1.45 horsepower per NHRA HP Factor, you'll run decent. I would guess the guys at the top of their classes are roughly 1.6+ hp/Factor.

So an example would be a 375hp aluminum headed 396" Big Block rated at 405hp by NHRA with an auto transmission should be: 1.45 x 405 = 587hp. Start getting over that and you'll be more and more competitive.Bad boys are probably in the 645hp range.

[Dano]

I'm running the 402" 70 Nova with Alum Heads HP Per NHRA is 415 which puts me at 601.75 HP. I have some work to do.

[GTX JOHN]

I was talking about 427 engine. I was thinking 425/435 Combo.

On our stuff I usually figure about 1.5 x Rated to go
1 under on decently prepared stocker. Our Superstocker
take at least 2 x Facter for 1 under pass!



My .02
Your Mileage may vary

[Mike Mans]

The only big reference point I have seen someone post was a dyno sheet from Steve Wann's 413" motor in 2018. It made 674hp with a 405hp factor. That's a HUGE 1.66hp/factor - but that's also why he has one of (if not THE) fastest A/SA in the country.

[Dano]

How do you get that much Hp without , AHEM, you know what I mean......

[Mike Mans]

Originally Posted by Dano

How do you get that much Hp without , AHEM, you know what I mean......

You don't. lol

[MR DERBY CITY]

Originally Posted by Dano

I'm running the 402" 70 Nova with Alum Heads HP Per NHRA is 415 which puts me at 601.75 HP. I have some work to do.

Mr. Dano, let me help you out here. The first order of BUSINESS is contacting all your fellow competitors that run the same combination. Get everyone to agree to slow their car down in order to MANIPULATE the class averages. It’s always nice to get a HP reduction when NHRA opens the WELFARE line. Don’t be ashamed, almost everyone does it.

[B Parker]

Originally Posted by MR DERBY CITY

Mr. Dano, let me help you out here. The first order of BUSINESS is contacting all your fellow competitors that run the same combination. Get everyone to agree to slow their car down in order to MANIPULATE the class averages. It’s always nice to get a HP reduction when NHRA opens the WELFARE line. Don’t be ashamed, almost everyone does it.

MJ That combo will have never have any HP taken off of it. To many fast ones and too many A an B cars that they will run against in eliminations. It's to bad that is a tough HP rating.

I thought by now one of the fast 396 cars would have hit the 1.20 trigger. I believe it will only be a matter of time. To many of them and again there are a lot of fast A an B cars. I was hoping that John or Scott would play in A or B for a while. The AA has a tough index. How fast do you think the 2015 COPO's. I was hoping to find out at the baby Gators Barry