L31 Vortec head and 91 TPI Manifold

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Apr 2, 2001 | 06:20 PM

rwendt

Thread Starter

Junior Member

Joined: Apr 2000

Posts: 23

Likes: 0

From: Newark, N.Y., USA

Car: 1991 Camaro Z-28

Engine: 305

Transmission: 5 Speed Manual

L31 Vortec head and 91 TPI Manifold

This question has been asked many times, but will the L31 Vortec heads work with my 91 TPI manifold. 305 engine. I'm kind of confused because Jim Pace has a set of L31's drilled and tapped for PRE-86 heads, so this means my 91 TPI manifold will both up??? Right or wrong???

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1991 Z28
Ultra Metallic Blue
305 TPI
5 Spd Manual
3:08 rear axle

members.fbody.com/rwendt/

Apr 2, 2001 | 07:28 PM

johnsjj2

Supreme Member

Joined: Mar 2001

Posts: 1,346

Likes: 2

From: Monticello, IN USA

Car: 1991 Z-28

Engine: 350

Transmission: T-5 (gonna buy the farm)

No, they will not work. The intake port is taller than the older style manifolds. Scoggin-Dickey Chevrolet is suppose to be coming out with a TPI intake that will match. I don't know what good it will do to have a head that is drilled for older manifolds, when the intake ports won't line up. Some one let me know if I am wrong.

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Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)