Intake manifold swap question

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Feb 13, 2011 | 10:10 PM

StringRust

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From: Toms River, NJ

Car: '89 Camaro Rs/ '87 Z28

Engine: 305 c.i. TBI/ 305 c.i. 4bbl

Transmission: 700r4/T5

Axle/Gears: 3.73 posi/ 3.73 posi

Intake manifold swap question

So I took off the stock intake manifold and I am replacing it with a holley. What is the reason for the 2 rear coolant ports being blocked off with aluminum squares and only a small hole drilled in them for coolant to flow through. Is that something I should leave or remove? Wish I took a photo of them, anyone know what Im talking about?
Thanks

Last edited by StringRust; Feb 13, 2011 at 10:56 PM.

Feb 13, 2011 | 10:20 PM

vetteoz

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From: Not in Kansas anymore

Car: 82 Z28

Engine: 383 SP EFI/ 4150 TB

Transmission: T400

Axle/Gears: QP 9" 3.73

Re: Intake manifold swap question

To restrict coolant flow
Just use the correct intake gasket for your engine if it has the restrictor plates built in

Does the Avenger have the rear coolant crossover passage?
( most aftermarket intakes don't )
If not , then restrictor becomes academic as no place for the coolant to flow anyway

Last edited by vetteoz; Feb 13, 2011 at 10:24 PM.