BB Chev HP

[MR DERBY CITY]

Originally Posted by B Parker

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 Barry

Barry, I am sure you are correct. I can lead a horse to water,.....but I can’t make them drink.....

[B Parker]

Originally Posted by 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.

Mike if you have only 587 you would be in trouble running most of the fast A an B cars. Not that I would know but I would guess your second number of 645 would be in the ball park. Barry

[Mike Mans]

Originally Posted by B Parker

Mike if you have only 587 you would be in trouble running most of the fast A an B cars. Not that I would know but I would guess your second number of 645 would be in the ball park. Barry

I completely agree with you there. I figured the 587 would put you around an -.80 under car, give or take a little. If a guy wants to be competitive in a heads up race against the top dogs - you'll need that 645 range. Just my perspective.

[Frank Castros]

Originally Posted by Mike Mans

I completely agree with you there. I figured the 587 would put you around an -.80 under car, give or take a little. If a guy wants to be competitive in a heads up race against the top dogs - you'll need that 645 range. Just my perspective.

None of those "top dogs" will run it 1320, to protect the number.
Maybe Scott Gove might.

[Dano]

my combo for A is 3490 lbs, for B 3698 lbs. I would need enough hp for A and they are 9.8 - 9.90 ?
Am I figuring the class wrong? 402" with Alum Heads and Auto.....8.23 lbs per?

[B Parker]

Frank I'm sure it depends on what round your in and what race your at. Several people have done it on red lights and in qualifying. I think it's nuts but it's their car and money. BP

[Jim Hanig]

Originally Posted by Dano

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

A good 402 should made in the 590/ 620 to run pretty good,

[HP HUNTER]

Originally Posted by dano

any suggestions on baseline hp needed in a or b/sa?

132 mph @ 3400=602 hp
133 mph @ 3400=616 hp
134 mph @ 3400=630 hp

132 mph @ 3600=638 hp
133 mph @ 3600=652 hp
134 mph @ 3600=682 hp

[B Parker]

Originally Posted by HP HUNTER

132 mph @ 3400=602 hp
133 mph @ 3400=616 hp
134 mph @ 3400=630 hp

132 mph @ 3600=638 hp
133 mph @ 3600=652 hp
134 mph @ 3600=682 hp

You will need to add 200 lbs to that number. sorry didn't catch your second set of numbers
BP