Carb Spacer Question:

[74bigblock]

This is a basic question... what is the purpose of the spacer between the intake manifold and the carb? Is it needed? Or can I remove it to gain some hood clearance? Thanks, Dave

 

[SG4206]

Is this the factory 1/4" gasket spacer , or an aftermarket 1"?

The factory unit helps insulate intake manifold heat from the carb. I would tend to leave it on , If you take off a 1" ; replace with a thick factory piece.

The 1" increases plenum area for more peak HP and TQ. Sometimes you can not feel any seat of the pants difference.

 

[mike weyman]

the thinner the spacer,the more low end grunt.the thicker spacer makes it work better a little more up the r.p.m. scale.mike

 

[74bigblock]

Yeah it's a 1 incher (not to be taken the wrong way)

 

[waterboy1976]

Yeah it's a 1 incher (not to be taken the wrong way)

yeah....well mines a 1 incher made of WOOD !!!!!!!

 

[alltide]

I've got a '74 matching # BB that is suposed to be all original and my spacer appears to be 1/4", I'm not sure anything thicker would allow for the proper clearance between the top of the air cleaner seal flange and the under side of the hood.

 

[74bigblock]

Alltide,

Mine is # match, but far from original. I've got a few goodies burried in the motoer, as well as an Edlebrock 750 sitting on top.