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Re: How much HP gain by adding shorty headers? (Goody)
You couldn't net enough hp to justify installing shorties. Long tubes are good for a solid 15-25hp (that's a low end estimate). It really will depend on what's behind the headers as to how much hp you will gain. Long tubes are the only way to go. I wouldn't put anyting but TPIS headers on either.
Re: How much HP gain by adding shorty headers? (1990z)
I'm running shorty JBA's..and I feel they are more of a hassle than their worth. they look good but I think they (along with the open lid K&N) have caused some timing / fuel issues with my ECM. Just my $.02 worth.
Re: How much HP gain by adding shorty headers? (NavyVet)
Thanks for your input. I'm trying to squeeze out as much power as I can from my LT1 with bolt-on's before I jump in the deep end of the HP pool and do Heads & Cam or even Gears. I've got two sets of cat's one for emissions and a 2nd set gutted for the track. Plus I've installed 1.6 roller rockers, under drive pulley, open air box, Hyperteck programer, you know all the little tricks. So far nothing has been a big $$$ hit, but I'm left with not much else to do but headers. How much time did you have on your shorties and what do you want for them? Thanks again for your input! :cheers: