| [GMCnet] 455 Intake Manifolds [message #274599] |
Mon, 30 March 2015 16:40  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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G'day,
Before I returned to Sydney I took the three intake manifolds for a 455 GMC I have in Houston took some measurements I thought might
be helpful:
I turned them over on my workbench and sat them on the carb mounting surface then measured the distance from the workbench to the
front lifter valley sealing surface and the rear lifter valley sealing surface.
OEM Manifold
Front: 3.55 inches
Rear: 3.77 inches
Edelbrock Performer
Front: 4.50 inches
Rear: 5.60 inches
Edelbrock Performer that has had the carb mounting surface milled down reducing the height.
Front: 3.76 inches
Rear: 4.08 inches
The depth of the plenum under the carb mounting surface is about the same as the OEM manifold.
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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