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03-11-2005, 01:57 PM
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#1 |
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Registered User
Join Date: Jul 2001
Location: reno, nv
Posts: 646
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Carb Spacer ??'s
i've got an old edelbrock intake (sp2p) with a 1406 leaned for the altitude (reno, nv). would adding a carb spacer help with anything, if so what thickness? throttle response? power? mileage? when first got the truck, it had a carter with a spacer. thanks.
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70 LWB, 350/350 A/C, P/S, 3 Tone Paint (white cap, primer gray with black guide coat) |
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03-11-2005, 02:36 PM
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#2 |
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Registered User
 
Join Date: Feb 2001
Location: East Central, MO
Posts: 11,336
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The farther u can get your carb from a heat source is better.............
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03-11-2005, 02:43 PM
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#3 |
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Registered User
Join Date: Jan 2005
Location: Colorado Springs
Posts: 693
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yep heat is bad for the carb especially edelbrock and carters they hate the heat extange from the intake. I would go with a 1" Phenolic or plastic spacer.
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1971 GMC K1500 SWB Fleetside, 4" skyjacker softride and, 14 Bolt FF, HD Dana 44 4.10's 1970 K5 TBI conversion lifted etc SOLD 1968 C20 camper truck SOLD “To ban guns because criminals use them is to tell the innocent and law-abiding that their rights and liberties depend not on their own conduct, but on the conduct of the guilty and the lawless.” Jeff Snyder |
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03-11-2005, 03:23 PM
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#4 |
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Resident Young Old Dude !
Join Date: Jul 2001
Location: Nevada
Posts: 1,948
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A spacer will help gain a little more Low end Torque.. Depending how thick the spacer is. Along with what's said above.
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03-11-2005, 04:33 PM
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#5 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Lots of variables. Car craft did this a couple years ago, and it turns out there is no definate answer, just all depends on the comb, condition, state of tune...ect.
However, they were pretty hard pressed to NOT have good results. |
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03-11-2005, 04:46 PM
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#6 |
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Registered User
Join Date: Jul 2001
Location: reno, nv
Posts: 646
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ok, so a spacer is good...with the 1406 should i use the spacer with individual 4 holes or the open square? does the material make a big difference (plastic or aluminum)? thanks again.
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70 LWB, 350/350 A/C, P/S, 3 Tone Paint (white cap, primer gray with black guide coat) |
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03-11-2005, 08:08 PM
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#7 |
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Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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4 hole to keep left and right seperated, also make sure gaskets aren't open, use 4 hole design to match carb/spacer. Open spacer reduces signal to carb, not good for
low end torque. |
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03-11-2005, 08:12 PM
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#8 |
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Resident Young Old Dude !
Join Date: Jul 2001
Location: Nevada
Posts: 1,948
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Get the composite one, It looks like plastic, It will keep the heat away from the carb. better... And a one inch will suffice.
K&N makes one I think they call a velocity stack. It's supposed to speed up the flow to give more Air to the Intake ?? |
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03-12-2005, 03:36 AM
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#9 |
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Registered User
Join Date: Nov 2004
Location: "Under Montana skies."
Posts: 1,836
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The phenolic spacers with the sleeved mounting holes to prevent gasket collapse under torque are great and necessary to insulate the carb & fuel inside it from the intake's heat which would heat, if not vaporlock the fuel. But the 1" or 2" spacers sold as performance enhancers are garbage. They don't do anything because they don't change the angle of the intake's runners. They're a big marketing scheme, like many "high perf" aftermarket items (K&N air filters, low-ohm-per-foot ignition wires, tornado, fuel magnets, etc.)
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'71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. |
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