CLASS RACER FORUM - View Single Post - to all 85-92 efi racers

Jeff Lee · 10-03-2008, 03:32 PM

A FWD car with a stick is just as consistant as a RWD car with a stick. I know as I ran one for several years. I had many passes that were within a few hundreths of each other. That was with a stock Getrag 5-speed with 3.91 final drive ratio and your basic Centerforce II
clutch. There have been numerous world championships with stick cars in stock eliminator.

Back to the TPI, what I'm trying to empasize is this particular combination. If all else is equal (but apparently one or more 350 TPI's have even better specs) other than CID, you should be able to use a pre-determined ratio of HP increase (or decrease) from one engine to the other. I have successfully used that argument with NHRA for a HP decrease on a friends V-8 engine. And it was an engine that had seen little to none in competition in 30+ years. It was for a decrease of the 318-2bbl DCP and I used the 273 2bbl as a standard. Arguably, the 318 may need a further reduction but at least it got the ball rolling. I've asked for and received other HP decreases with NHRA. NHRA has been known to follow some degree of logic. At least that's my experience.

10-03-2008, 03:32 PM	#49
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: to all 85-92 efi racers A FWD car with a stick is just as consistant as a RWD car with a stick. I know as I ran one for several years. I had many passes that were within a few hundreths of each other. That was with a stock Getrag 5-speed with 3.91 final drive ratio and your basic Centerforce II clutch. There have been numerous world championships with stick cars in stock eliminator. Back to the TPI, what I'm trying to empasize is this particular combination. If all else is equal (but apparently one or more 350 TPI's have even better specs) other than CID, you should be able to use a pre-determined ratio of HP increase (or decrease) from one engine to the other. I have successfully used that argument with NHRA for a HP decrease on a friends V-8 engine. And it was an engine that had seen little to none in competition in 30+ years. It was for a decrease of the 318-2bbl DCP and I used the 273 2bbl as a standard. Arguably, the 318 may need a further reduction but at least it got the ball rolling. I've asked for and received other HP decreases with NHRA. NHRA has been known to follow some degree of logic. At least that's my experience. __________________ Jeff Lee 7494 D/S '70 AMX Last edited by Jeff Lee; 10-03-2008 at 05:54 PM.