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Carb spacer #1753342 02/12/15 08:04 PM 02/12/15 08:04 PM
Joined: May 2005 Posts: 272 Waterloo, Wi J joedee OP enthusiast
joedee OP enthusiast J Joined: May 2005 Posts: 272 Waterloo, Wi	Hi, What is the reason for a cab spacer? Does it improve performance or is it just to lift the cab higher? Thank you, Joe

Re: Carb spacer [Re: joedee] #1753343 02/12/15 08:08 PM 02/12/15 08:08 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Hi, What is the reason for a cab spacer? Does it improve performance or is it just to lift the cab higher? Thank you, Joe Both... a 1/2" is basically to just lift the carb.. the 1" and 2" open add to the plenum volume... the 4 hole adds both some volume and carb signal velocity

Re: Carb spacer [Re: joedee] #1753344 02/12/15 08:33 PM 02/12/15 08:33 PM
Joined: Jan 2003 Posts: 31,052 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 31,052 Oregon	A carb spacer almost always adds horsepower. Moving the carb away from the bottom of the intake manifold makes it easier for the air to make the turn. I've used up to a 4 inch carb spacer when dyno testing.

Re: Carb spacer [Re: joedee] #1753345 02/12/15 08:53 PM 02/12/15 08:53 PM
Joined: Jan 2003 Posts: 17,918 Akron, Ohio ProSport I Live Here
ProSport I Live Here Joined: Jan 2003 Posts: 17,918 Akron, Ohio	Joedee, I don't know your combo but the one inch tapered 4 hole spacer called the 'Super Sucker' is one of the best ones to try for most combos.

Re: Carb spacer [Re: AndyF] #1753346 02/12/15 09:06 PM 02/12/15 09:06 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: A carb spacer almost always adds horsepower. Moving the carb away from the bottom of the intake manifold makes it easier for the air to make the turn. I've used up to a 4 inch carb spacer when dyno testing. A low down of your engine will help determinate if a spacer would help... on most stock engines it most likely wont do anything... but once you stroke a engine the intake tends to be to small except for some of the tall ones... even then a spacer might help

Re: Carb spacer [Re: MR_P_BODY] #1753347 02/12/15 11:25 PM 02/12/15 11:25 PM
Joined: Jul 2005 Posts: 11,632 SHELBY TWP,,MICHIGAN 72N96RR I LOVE WEDGIES
72N96RR I LOVE WEDGIES Joined: Jul 2005 Posts: 11,632 SHELBY TWP,,MICHIGAN	Myself I took two 1/2 inch spacers and drilled two holes in the sides for a pressure relief valve in each because of the intake im running...Stories of fuel puddling inside crossrams then grenading the tops had me looking for a way to save a rare old intake..I hope it works.. 8427614-400.jpg (68 downloads) 1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles.. A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish.. If you love someone set them free.. If they come back it means nobody else wanted them either..!!

Re: Carb spacer [Re: 72N96RR] #1753348 02/13/15 12:25 AM 02/13/15 12:25 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Myself I took two 1/2 inch spacers and drilled two holes in the sides for a pressure relief valve in each because of the intake im running...Stories of fuel puddling inside crossrams then grenading the tops had me looking for a way to save a rare old intake..I hope it works.. Its gonna take a lot of surface area to save that manifold on a back fire... more than a couple of 1" holes... a back fire makes good pressure and you have lots of flat areas(weak points) EDIT A couple of 2" X 3" spring loaded blow off panels (one on each end of the manifold) would work Last edited by MR_P_BODY; 02/13/15 12:29 AM.

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