carb question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Blk70 · 04-26-2002, 06:58 PM

Hey guys, just wondering if you can give me some help. I would like to replace the stock quadrajet carb I have on my stock 350. Before I talk to the so called specialists, I would like to ask the real gurus on this board. Would the Edelbrock performer series be good? Do I need a special adapter for the spread bore manifold? What CFM would be ideal for an everyday driver? 600 cfm/750? Any suggestions would be extremely welcome. Thanks all.

**68SWB4x4** · 04-26-2002, 07:05 PM

for a stock 350 go with the 600, the edelbrock is a very good carb, bolt it on and go..... if putting it on a stock manifold you will need an adaptor

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My Truck pictures

www.xframeimpala.com

68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET

misfits · 04-26-2002, 07:10 PM

I think edelbrock makes a spread bore replacement. I would reccomend getting a edelbrock, I personally don't like holleys they take alot of adjusting to keep them running decent.

pierce · 04-26-2002, 07:20 PM

I agree with the Edelbrock. The 1901 Edelbrock replaces the Quadrajet on the 350, the stock fuel line and accel cable fit with no mods.

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72 Chevy Blazer
69 GMC Longhorn
37 Chevy Coupe
pics at http://home.fuse.net/pierce
Cincinnati, OH

Gordo · 04-26-2002, 07:30 PM

Heck,,,go for the Edelbrock performer intake too,,,(sans EGR) it's only another $100.00. The 600 cfm will perform nicely on that 350. I recomend going with the electric choke also.

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1971 C10 swb stepside 350/700R4/3.73posi
Killingworth, Connecticut

Longhorn Man · 04-26-2002, 07:35 PM

If you get that carb, you will NEED a spacer. It'll run like crap without it. I was able to bolt one onto a stok intake, but the extra 100 bones is well spent on the intake. When I slippefd the new intake under that carb it was night and day differance.

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'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

misfits · 04-26-2002, 07:37 PM

are you talkin about putting a square bore carb on a spread bore manifold?

[This message has been edited by misfits (edited April 26, 2002).]

**MikeB** · 04-26-2002, 08:23 PM

Just to clear things up a bit for you, the 600 cfm Performer carb is P/N 1406 with electric choke; P/N 1405 without. These carbs require their P/N 2696 adapter for your stock manifold. Edelbrock's P/N 1901 is an aftermarket 750 cfm Quadrajet, but costs very big bucks.

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MikeB
69 C-10 Fleetside, mild 383, Dart Iron Eagle 180cc heads, Crane Energizer 266 cam and 1.6 roller rockers, Edelbrock Performer manifold and 600cfm carb, HEI w/ MSD components, 1986 front spindles/disc brakes, Vintage Air in-dash, lowered 2"/3".

Blk70 · 04-26-2002, 08:34 PM

Thanks all for the informative replies. Misfits, I couldn't tell you the benefits/disadvantages of the sqaure bore vs. spread bore, can you elaborate a little more. I am definetly leaning toward the performer series because of the reduced costs, rather than the Q-jet replacement form Edelbrock. Rather would save the money toward my ultimate goal of a nicely stoked 383 stroker. Thanks again all.

J · 04-26-2002, 11:46 PM

Well I've got a holley 750 spreadbore double pumper and I HATE it it is the biggest piece of... I am going to switch to a 600 electric choke Edlebrock and proformer intake. As for the differnce, on a spreadbore the rear barrels are bigger. Supposedly it will give you better gas mileage if you only use the first two. I don't know if thats true but if it is I don't care I hate that holley so much.

Longhorn Man · 04-27-2002, 12:09 AM

It bolted on.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

greasemonkey · 04-27-2002, 02:06 PM

I am planning on eventually getting a Performer or Performer RPM carb and manifold, but I don't know what choke to get, I've heard so many conflicting opinions.

69 longhorn · 04-27-2002, 02:18 PM

The elect choke equipped carbs are set up leaner than the hand choke versions. I would say , for a daily driver.....go for the elc choke. For a more perf set up, the hand choke is my choice. Either can be recalibrated,so its a matter of whether you feel like bolting the carb on,or you are willing to tune it........69 longhorn.

greasemonkey · 04-27-2002, 02:35 PM

OK, thanks! I think the electric choke will be the one to go with, this is going to be a daily driver with a little more power than the average DD but not a dragster or anything.

04-26-2002, 06:58 PM	#1
Blk70 Registered User Join Date: Jun 2001 Location: Southern California Posts: 33	carb question Hey guys, just wondering if you can give me some help. I would like to replace the stock quadrajet carb I have on my stock 350. Before I talk to the so called specialists, I would like to ask the real gurus on this board. Would the Edelbrock performer series be good? Do I need a special adapter for the spread bore manifold? What CFM would be ideal for an everyday driver? 600 cfm/750? Any suggestions would be extremely welcome. Thanks all. __________________ 1970 GMC Shortbed 350 Chevy/Automatic

04-26-2002, 07:05 PM	#2
68SWB4x4 Strongman Garage Join Date: Apr 2000 Location: Salinas, CA Posts: 10,241	for a stock 350 go with the 600, the edelbrock is a very good carb, bolt it on and go..... if putting it on a stock manifold you will need an adaptor ------------------ My Truck pictures www.xframeimpala.com 68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET" 56 big window short stepside 235 dual 1 brls 64ImpalaSS 327 70 C10 LWB fleetside custom/10 350/TH350 IM me on aol SN= SHAGROLET __________________ Kalle 68 GMC Suburban 1500 4x4 SOLD 69 Pontiac Lemans 99 Silverado 4.8 5 speed ECSB [ Facebook Instagram Subscribe on YOUTUBE

04-26-2002, 07:20 PM	#4
pierce Registered User Join Date: Sep 2000 Location: Cincinnati,OH,USA Posts: 464	I agree with the Edelbrock. The 1901 Edelbrock replaces the Quadrajet on the 350, the stock fuel line and accel cable fit with no mods. ------------------ 72 Chevy Blazer 69 GMC Longhorn 37 Chevy Coupe pics at http://home.fuse.net/pierce Cincinnati, OH __________________ 69 GMC 1 Ton Longhorn 37 Chevy Coupe

04-26-2002, 07:30 PM	#5
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	Heck,,,go for the Edelbrock performer intake too,,,(sans EGR) it's only another $100.00. The 600 cfm will perform nicely on that 350. I recomend going with the electric choke also. ------------------ 1971 C10 swb stepside 350/700R4/3.73posi Killingworth, Connecticut __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

04-26-2002, 08:23 PM	#8
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,571	Just to clear things up a bit for you, the 600 cfm Performer carb is P/N 1406 with electric choke; P/N 1405 without. These carbs require their P/N 2696 adapter for your stock manifold. Edelbrock's P/N 1901 is an aftermarket 750 cfm Quadrajet, but costs very big bucks. ------------------ MikeB 69 C-10 Fleetside, mild 383, Dart Iron Eagle 180cc heads, Crane Energizer 266 cam and 1.6 roller rockers, Edelbrock Performer manifold and 600cfm carb, HEI w/ MSD components, 1986 front spindles/disc brakes, Vintage Air in-dash, lowered 2"/3". __________________ Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

04-26-2002, 07:10 PM	#3
misfits Registered User Join Date: Feb 2001 Location: Sturgeon Bay , WI USA Posts: 375	I think edelbrock makes a spread bore replacement. I would reccomend getting a edelbrock, I personally don't like holleys they take alot of adjusting to keep them running decent.

04-26-2002, 07:35 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	If you get that carb, you will NEED a spacer. It'll run like crap without it. I was able to bolt one onto a stok intake, but the extra 100 bones is well spent on the intake. When I slippefd the new intake under that carb it was night and day differance. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio

04-26-2002, 07:37 PM	#7
misfits Registered User Join Date: Feb 2001 Location: Sturgeon Bay , WI USA Posts: 375	are you talkin about putting a square bore carb on a spread bore manifold? [This message has been edited by misfits (edited April 26, 2002).]

04-26-2002, 08:34 PM	#9
Blk70 Registered User Join Date: Jun 2001 Location: Southern California Posts: 33	Thanks all for the informative replies. Misfits, I couldn't tell you the benefits/disadvantages of the sqaure bore vs. spread bore, can you elaborate a little more. I am definetly leaning toward the performer series because of the reduced costs, rather than the Q-jet replacement form Edelbrock. Rather would save the money toward my ultimate goal of a nicely stoked 383 stroker. Thanks again all. __________________ 1970 GMC Shortbed 350 Chevy/Automatic

04-26-2002, 11:46 PM	#10
J Registered User Join Date: Oct 2001 Location: Yuma, AZ Posts: 164	Well I've got a holley 750 spreadbore double pumper and I HATE it it is the biggest piece of... I am going to switch to a 600 electric choke Edlebrock and proformer intake. As for the differnce, on a spreadbore the rear barrels are bigger. Supposedly it will give you better gas mileage if you only use the first two. I don't know if thats true but if it is I don't care I hate that holley so much. __________________ '72 C-10 '99 Silverado '91 S-Dime

04-27-2002, 12:09 AM	#11
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	It bolted on. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio

04-27-2002, 02:06 PM	#12
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	I am planning on eventually getting a Performer or Performer RPM carb and manifold, but I don't know what choke to get, I've heard so many conflicting opinions. __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

04-27-2002, 02:18 PM	#13
69 longhorn Registered User Join Date: Aug 2001 Location: rock island,il,usa Posts: 5,382	The elect choke equipped carbs are set up leaner than the hand choke versions. I would say , for a daily driver.....go for the elc choke. For a more perf set up, the hand choke is my choice. Either can be recalibrated,so its a matter of whether you feel like bolting the carb on,or you are willing to tune it........69 longhorn. __________________ http://community.webshots.com/user/hotrodhorn

04-27-2002, 02:35 PM	#14
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	OK, thanks! I think the electric choke will be the one to go with, this is going to be a daily driver with a little more power than the average DD but not a dragster or anything. __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

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