pro's &con's of these runners

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Dec 31, 2002 | 11:11 AM

mean 5.7

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Joined: Oct 2001

Posts: 479

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From: plainfield il

Car: 87 gta

Engine: 5.7 ltr

Transmission: full race 700r4

pro's &con's of these runners

tpis large tube:
slp semi siamesed:
which is better and why? or are they about the same.

Dec 31, 2002 | 03:31 PM

D Stroy H8

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Joined: Jan 2002

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From: Las Vegas, NV

Car: 1990 Iroc-Z

Engine: L98

Transmission: 700R4

About the same... both will offer higher revs when part of a complete high flow TPI (Portmatched plenum to runners portmatched to aftermarket lower manifold)

Dec 31, 2002 | 03:36 PM

Jim85IROC

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From: Readsboro, VT

Car: 85 IROC-Z / 88 GTA

Engine: 403 LSx (Pending) / 355 Tuned Port

Transmission: T56 Magnum (Pending) / T5

Axle/Gears: 3.42 / ?

Pros to the TPIS: They work.
Cons: They cost 3x what they should.

Pros to SLP: They work, and they are affordable.
cons: You need to do some port matching.