1986 tpi hp queastions...
Thread Starter
Heel & Toe
Joined: May 2006
Posts: 17
Likes: 0
From: Maine
1986 tpi hp queastions...
I have a L98 iron head tpi that was dyno'd at 48,000 mi in 2006 an had 207 hp at the rear wheels. Since I have upgraded:
465 degree cam
roller tip rockers
performance lifters
double roller timing chain
fluid dampner
accell plugs, wires, super coil, and ecu
stock manifolds, but 2 1/2 in straight pipes all the way back to magnaflow mufflers, no y-pipe or cats..
Sounds great and runs fast.
Any tips, did i do anything wrong? do i need something else? ? How much hp would/could this give me?
Thank you guys.. for years of help..
465 degree cam
roller tip rockers
performance lifters
double roller timing chain
fluid dampner
accell plugs, wires, super coil, and ecu
stock manifolds, but 2 1/2 in straight pipes all the way back to magnaflow mufflers, no y-pipe or cats..
Sounds great and runs fast.
Any tips, did i do anything wrong? do i need something else? ? How much hp would/could this give me?
Thank you guys.. for years of help..
Last edited by navyvettehead; May 25, 2011 at 03:28 AM.
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
probably not the answer you're lookin for, but if you like it and its reliable and you are enjoying it, dont over 'fix' it. sometimes they become unreliable and you spend more time fixin than drivin. hope this helps. I used to have an old 53 pan that vibrated something loose every 90 miles. we called that harley riders havin a roadside party, cause a bunch of folks would stop to see if they could help out, before locktight , of course.
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
465 degree cam?
Again not what you want to hear but you are dealing with an engine with a severely limited breathing capacity. The cam may help but you still have the restriction of the stock exhaust manifolds and the small runners. Heads are not the best in the world either. Everything else you did are members of the supporting cast, not prime time players. Your next buy should be a set of long tube headers. That will be a major improvement.
Again not what you want to hear but you are dealing with an engine with a severely limited breathing capacity. The cam may help but you still have the restriction of the stock exhaust manifolds and the small runners. Heads are not the best in the world either. Everything else you did are members of the supporting cast, not prime time players. Your next buy should be a set of long tube headers. That will be a major improvement.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
What are the specs on this camshaft?
Won't matter what cam is in it with TPI and the stock manifolds choking the hell out of it.
Won't matter what cam is in it with TPI and the stock manifolds choking the hell out of it.
