TPI questions
Thread Starter
Pro
Joined: Jun 2003
Posts: 702
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From: Castle Rock Co
TPI questions
I have a TPI intake of a 1991 Camaro that I want to install on my 1991 K5 Jimmy.
Performace wise I just want torque and lots of it. Are high dollar runners worth it for an engine that won't go over 4k RPM? What about cams, is there a flat tappet grind thats recommended for TPI?
Any other advice pointers etc?
Thanks
Performace wise I just want torque and lots of it. Are high dollar runners worth it for an engine that won't go over 4k RPM? What about cams, is there a flat tappet grind thats recommended for TPI?
Any other advice pointers etc?
Thanks
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by Heretic
I have a TPI intake of a 1991 Camaro that I want to install on my 1991 K5 Jimmy.
Performace wise I just want torque and lots of it. Are high dollar runners worth it for an engine that won't go over 4k RPM? What about cams, is there a flat tappet grind thats recommended for TPI?
Any other advice pointers etc?
Thanks
Performace wise I just want torque and lots of it. Are high dollar runners worth it for an engine that won't go over 4k RPM? What about cams, is there a flat tappet grind thats recommended for TPI?
Any other advice pointers etc?
Thanks
There are a lot of flat tappet cams on the market specifically designed for the TPI setup. You can go to CompCams website to check them out. Look for their Xtreme Energy series of flat tappet cams.
I'd keep the .050 duration at 210 or below (something on the order of 208 In/212 Ex @ .050) and the lobe seperation angle at 112.
Just my thoughts.
Jake
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by JAKE
I'd keep the .050 duration at 210 or below (something on the order of 208 In/212 Ex @ .050) and the lobe seperation angle at 112.
Jake
Jake
Except possibly even MORE LSA, if available.Flat tappet? Doesn't a '91 Jimmy come with a roller cam? If it is a 305, you might want to chop a few degrees off those .050" duration numbers.
RACE ON!!!
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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The AS&M runners or the like is up to you, a bigger base is preferable to the runners to me.
The Lingenfelter 211 or TPiS ZZ9 cams are suited to TPI motors.
The Lingenfelter 211 or TPiS ZZ9 cams are suited to TPI motors.
Thread Starter
Pro
Joined: Jun 2003
Posts: 702
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From: Castle Rock Co
Thanks for the pointers. I think I'll just leave the runners stock and port the base and plenum a bit.
As for the flat tappet cam, trucks did not come with rollers until 96. Every once and while you'll luck out and get a block machined for a roller, but with the flat tappet cam installed. My last 91 K5 (RIP) was not a roller block even.
As for the flat tappet cam, trucks did not come with rollers until 96. Every once and while you'll luck out and get a block machined for a roller, but with the flat tappet cam installed. My last 91 K5 (RIP) was not a roller block even.
