What are some good combos for a L98 tpi motor. im not looking to make crazy amounts of power, but id like an extra 40-50.
i was thinking about the vortec heads and intake form sdpc.
i also need to stay emissions legal...

 

Id really stay away from any TPI performance parts. Try something along the lines of stealth ram/ superram. As for heads, AFR heads seem to get good reviews. Ill be having my factory aluminum heads done by FLP (great to have them in my backyard!). It looks like having your heads done is cheaper but alot more downtime. Ill be going superram, but i wouldnt unless i was getting the deal i am. Try thunderracing.com for a stealthram setup.
matt

 

Fast Burn heads are nice. Ligenfelter and edelbrock makes intakes for a TPI setup. SLP runners work nice. Porting will help too.

 

I dont know how much money you are going to spend but I would get the stealth ram and some 113 Corvette heads and have them ported and I would get me a good cam too.
But before I would get a stealth ram I would make sure it would pass emissions.

JD

 

I just got back from the machine shop and I spent about an hour there comparing some heads just for fun, I was surprised at the lack of quality in both fast burns and AFR, I was shocked when I pitted them against some others at the lack of quality of workmanship.

ESPECIALLY the fastburns

I'd just like to put the info out there for people who dont have the means to visually compare with their own hands and eyes for themselves

 

What were you comparing them to? Have you personally seen a pair of pro action heads?

 

I was comparing them to each other

Yea i've seen pro actions

After my little experience I would never spend my own money on:
Trickflow
Fastburn

I would have to think long and hard about:
AFR
Edelbrock



Most of this is comparing quality of workmanship with just my head knowledge of where most of them flow at..

Its pretty much undisputed that AFR does some good things with flow numbers.. But when you compare apples to apples any of the other heads could be made to catch up, but with the benifit of a cheaper price and better quality.

Pro actions i still have good faith in, they're a great head

 

You may want to look at the Pro 1 heads from Dart they are realy good and they dont cost that much but I would not go over 200cc unles you are going to make it 383 and bigger.

JD

 

Dollar for dollar the pro 1's were by far the best head, both in quality and potential.

 

should i stay away from the vortec tpi set up

 

man what is it with people getting names as close to mine as they can lately....


Vortecs are nice.. but the money you spend by the time you get the thing running could easily be spent on some sportsman II's or some mid level aftermarket heads.

 

Well I have had experience with Edelbrock & I am not impressed. I did a buddy's 302 Ford with Edelbrocks & found some of the rocker stud holes not drilled correctly & helicoils not installed correctly. I had to spend about 3 hrs correcting their faulty workmanship. I also had a bad intake base from them. They drilled the injector screw mounting hole crooked & into the intake port, causing a vacuum leak & then backordered the replacement for 6 mos. Their quality control leaves alot to be desired, IMHO.

 

The specific edelbrocks were the victor juniors..


For the price i was AMAZED at how horrible the intake runners were cast.. yea the workmanship was deffinatly lacking

 

i have 86 iroc with the upgraded vortec heads lt4 hot cam scdp intake slp runners and it works very well with a six speed and 3.73 gears it did 13.2 in the 1/4 mile last week

 

Nice run