Carb spacer good idea?
August 25th, 2012, 12:55 AM
#1
Kickin' It Oldschool
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August 25th, 2012, 10:15 AM
#2
Seasoned beater pilot.
Join Date: Jan 2007
Location: Chicago
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Usually only in engines with 400+ horsepower.
Carb spacers will actually make your motor bog if you already have too much plenum volume. I put a 1"spacer on a stock'ish 455 and it lost 1.5 tenths in the quarter mile, and the 60' went from 1.87 to 1.94
Carb spacers will actually make your motor bog if you already have too much plenum volume. I put a 1"spacer on a stock'ish 455 and it lost 1.5 tenths in the quarter mile, and the 60' went from 1.87 to 1.94
August 25th, 2012, 10:24 AM
#3
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Usually the spacers are for high-end (rpm) horsepower. I don't think the normal street engine would see any benefit and like the previous fellow stated may actually COST you power.
When I was racing small-block Chevrolets I used the spacer and found a coyple extra horses but this was a high-revving engine with a LOT of gear and converter:--NOT on the street.
When I was racing small-block Chevrolets I used the spacer and found a coyple extra horses but this was a high-revving engine with a LOT of gear and converter:--NOT on the street.
August 25th, 2012, 03:41 PM
#5
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I can't speak to the performance issues, but adding the 1" spacer between the Edelbrock Performer Intake and Edelbrock 1406 4BBL on my 350 solved some fuel boil issues that caused my car to stall out when hot.
August 25th, 2012, 04:05 PM
#6
Out of Line, Everytime😉
Join Date: Dec 2006
Location: Melville, Saskatchewan
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I have that one. Being a 4 hole, supposed to help bottom end. Maybe using a spacer is killing me at the track. I tried a 4 hole and open 1" spacer, made no difference at the track.
August 25th, 2012, 05:41 PM
#7
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Wow! Bad info here.
Here are the facts;
Adding a spacer has little to do with the rpm range, see my intake test in the big block section. You're effectively adding plenum volume so if the intake and/or carb are too small for the rest of the combo then typically it will benefit from one.
If the carb and intake size are correct normally it won't. But by making the air/fuel take a less severe turn into the runner some benefit may still be realized.
Here are the facts;
Adding a spacer has little to do with the rpm range, see my intake test in the big block section. You're effectively adding plenum volume so if the intake and/or carb are too small for the rest of the combo then typically it will benefit from one.
If the carb and intake size are correct normally it won't. But by making the air/fuel take a less severe turn into the runner some benefit may still be realized.
Last edited by cutlassefi; August 25th, 2012 at 05:44 PM.
August 26th, 2012, 10:08 AM
#10
Kickin' It Oldschool
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Location: Champaign-Urbana, Illinois
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Save your money for the 350 or 455 you're gonna build one day and drop in that thing 
I don't think chicks are into "Hey wanna check out my smallblock?"
...............That song pops in my head "STROKE ME STROKE ME!"
Billy Squire anyone?
August 28th, 2012, 07:10 AM
#11
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Join Date: May 2009
Posts: 1,452
Did you buy a spacer like this? Or one of the insulating gaskets that E-Brock recommends? There's a difference. (Honest Question, not trying to be a smart-as*).
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