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HP per cu in.

Buck - in order to be very competitive in NHRA Comp AA/A you would need between 3.0 and 3.1 HP/cid (in a modern style door car). By very competitive I mean a car that could qualify in the top 4.

For comparison, a top 500 cid Pro Stock engine makes 1450-1475 HP or 2.9-2.95 HP/cid, maybe even more. Good luck! :)

Patrick Hale
www.DragRacingPro.com
 
I have a destroked 426 jpi block now 383 cu in. billet heads with water
2.425 intakes 1.950 ex. 9.3 compression 1471 standard helix blower
18 to 20 lbs boost. sounds like I got some work to do.

Buck Travis
 
Buck said:
I have a destroked 426 jpi block now 383 cu in. billet heads with water
2.425 intakes 1.950 ex. 9.3 compression 1471 standard helix blower
18 to 20 lbs boost. sounds like I got some work to do.

Buck Travis
Click to expand...

What sytle of car do you have and what does it weigh? What's your best ET and MPH? I will try to estimate how much HP you have now. Since you are only trying to make a little more HP than the NA engine - it seems like a good choice.

Patrick Hale
www.DragRacingPro.com
 
The car is a t roadster solid suspension 4 speed lenco, 2 disc clutch
mark williams floater 2068 lbs

Buck Travis
 
Buck - the 23'T bucket really hurts when you are trying to run 6.85 at 200+ MPH. :(

You would need about 1300 HP for this combo to run -0.60 under the 7.45 AA/A index . . . which works out to 3.4 HP/cid. There have been a couple of good running blown gas cars over the years but I think they were both Corvettes.

Patrick Hale
www.DragRacingPro.com
 
size motor?

Does anybody know what size motor Rick hord had in his vette when he
set the AA/A record a few years ago?
Buck Travis
 
Buck said:
I have a destroked 426 jpi block now 383 cu in. billet heads with water
2.425 intakes 1.950 ex. 9.3 compression 1471 standard helix blower
18 to 20 lbs boost. sounds like I got some work to do.

Buck Travis
Click to expand...

I got excited about building a AA/A comp car there for a few minutes. With a ProCharger it would be a slam dunk making 1300hp on gas with the above engine.
But then I dug into the rule book and see they are not allowed.

Sooo, back to outlaw racing.

Blessings.......Ron Clevenger
Creekside Racing Ministry
John 14:6
Pacific ProComp
 
I had a friend that tried BB/A.......blown gas is a very hard combo to get happy.If i remember right they were in the 7-1 range on compression.
 
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