L31 Vortec head and 91 TPI Manifold - Third Generation F-Body Message Boards

rwendt · 04-02-2001, 07:20 PM

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/

johnsjj2 · 04-02-2001, 08:28 PM

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)