Is it bad to run a Squarebore Carb with a Spreadbore Intake?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TIMSPEED · 12-24-2003, 05:39 PM

I THINK I'm running a Squarebore Carb (Holley 4160) with a Spreadbore intake (Edelbrock Performer #3701). Would this make for a bad setup?? Maybe this is the problem my truck doesn't run like it should...
Here's a picture of my intake..is this Squarebore?

THIS is a squarebore isn't it?

Lynx · 12-24-2003, 05:54 PM

the top one is equipted for both is it not?

i have no idea on prefromance diffreneces tho

TIMSPEED · 12-24-2003, 05:57 PM

Quote:

Originally posted by Lynx
the top one is equipted for both is it not?

That's what I thought too..but I wasn't sure.

terrym1 · 12-24-2003, 06:19 PM

Be really careful when you bolt it on the intake sometimes the base plate on the carb is to small for the intake ie... causes vaccum problems just some experence talking my.02

r0lf- · 12-24-2003, 07:06 PM

Nah, im running a 1" adapter spacer and it works just fine, no problems at all.

76HighSierra · 12-25-2003, 12:09 AM

Quote:

Originally posted by terrym1
Be really careful when you bolt it on the intake sometimes the base plate on the carb is to small for the intake ie... causes vaccum problems just some experence talking my.02

Hey, terrym1, where in Nova Scotia do you live? I used to live there.

terrym1 · 12-25-2003, 12:44 AM

truro n.s. its about 1 hr from halifax

*1FaastC10* · 12-25-2003, 03:22 AM

Tim, Edelbrock sells a spacer specifically for this purpose. i know i didnt have any problems putting my 1405 on my 2101 intake, but the base plate on the Eddy carb looks wider than the Holley. i'd say put the spacer on it, and call it a day. since you've probably already got the kickdown bracket for the Holley that bolts to the carb stud, you shouldnt have any linkage issues. if you do not have this brakcet, get one, its only $10 or so.

TIMSPEED · 12-25-2003, 06:51 PM

Quote:

Originally posted by 1FaastC10
Tim, Edelbrock sells a spacer specifically for this purpose.

Is this it? Edelbrock Squarebore Carb to Spreadbore Manifold Adapter??

*1FaastC10* · 12-26-2003, 01:09 AM

yeah, i think they make a cast alum one too, that's tapered and 1/2"-1" thick.

76HighSierra · 12-27-2003, 03:06 PM

Quote:

Originally posted by terrym1
truro n.s. its about 1 hr from halifax

Cool. I lived on Cape Breton Island. Odd place for an island boy to be, 3,000 miles from home and in the middle of the desert, huh? Women make us do the strangest things.

*1972C10* · 01-02-2004, 03:23 AM

Fel Pro Makes a gasket Thats used for mid 70s 460 ford apps it is extra wide holley pattern and has bushings on the holes it works nice with that manifold i used to run a 2101 with a edelbrock carb some gaskets like Mr gasket and whatnot would eventually blow out on the side of the back barrels I dont recall the exact part number i can get it if you still need info and the gasket only costs like 8 bucks at oriellys and comes with a warranty

12-24-2003, 05:39 PM	#1
TIMSPEED Join Date: Jan 2003 Location: Modesto, CA Posts: 1,321	Is it bad to run a Squarebore Carb with a Spreadbore Intake?? I THINK I'm running a Squarebore Carb (Holley 4160) with a Spreadbore intake (Edelbrock Performer #3701). Would this make for a bad setup?? Maybe this is the problem my truck doesn't run like it should... Here's a picture of my intake..is this Squarebore? THIS is a squarebore isn't it? __________________ I have a few cars... See Them Here

12-24-2003, 05:54 PM	#2
Lynx Registered User Join Date: Jun 2003 Location: Fort McMurray, Alberta, Canada Posts: 513	the top one is equipted for both is it not? i have no idea on prefromance diffreneces tho __________________ Ben 1983 Silverado SWB 305 2002 Silverado Extended Cab 5.3 http://members.shaw.ca/bkennett

12-24-2003, 07:06 PM	#5
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Nah, im running a 1" adapter spacer and it works just fine, no problems at all. __________________ 1978 Money Pit - CUSTOM DELUXE!!!!

12-24-2003, 06:19 PM	#4
terrym1 Registered User Join Date: Oct 2003 Location: nova scotia Posts: 179	Be really careful when you bolt it on the intake sometimes the base plate on the carb is to small for the intake ie... causes vaccum problems just some experence talking my.02

12-25-2003, 12:44 AM	#7
terrym1 Registered User Join Date: Oct 2003 Location: nova scotia Posts: 179	truro n.s. its about 1 hr from halifax

12-25-2003, 03:22 AM	#8
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	Tim, Edelbrock sells a spacer specifically for this purpose. i know i didnt have any problems putting my 1405 on my 2101 intake, but the base plate on the Eddy carb looks wider than the Holley. i'd say put the spacer on it, and call it a day. since you've probably already got the kickdown bracket for the Holley that bolts to the carb stud, you shouldnt have any linkage issues. if you do not have this brakcet, get one, its only $10 or so.

12-26-2003, 01:09 AM	#10
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	yeah, i think they make a cast alum one too, that's tapered and 1/2"-1" thick.

01-02-2004, 03:23 AM	#12
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Fel Pro Makes a gasket Thats used for mid 70s 460 ford apps it is extra wide holley pattern and has bushings on the holes it works nice with that manifold i used to run a 2101 with a edelbrock carb some gaskets like Mr gasket and whatnot would eventually blow out on the side of the back barrels I dont recall the exact part number i can get it if you still need info and the gasket only costs like 8 bucks at oriellys and comes with a warranty



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