what carb are all you bbc folks running ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bo-w · 05-29-2011, 04:25 AM

so im just wondering what you all with 396-402 big blocks are running for a carb, and if you have gone smaller for mpg? any input is great, oh along with carb what other mods (engine wise ) are you running ? thanks all.

JimKshortstep4x4 · 05-29-2011, 05:27 AM

I am running the stock Q-jet. With the smaller primaries and large secondaries it works very well on the big blocks.

JIm

don t. - 72gmc · 05-29-2011, 06:38 AM

Quote:

Originally Posted by JimKshortstep4x4

I am running the stock Q-jet. With the smaller primaries and large secondaries it works very well on the big blocks.

JIm

+1 with a stock 396/400/402

sstone69 · 05-29-2011, 07:04 AM

Stock Q-jet on my 396
Posted via Mobile Device

landsurvey1 · 05-29-2011, 10:14 AM

Edelbrock 750, 465 BB, 400HP and 450 lb/ft Torque.

Longhorn Man · 05-29-2011, 10:17 AM

I had a quadra jet rebuilt for my 402, I had thought it was a big block carb when I had it done, ran like crap. Bought an Edelbrock 750 (same as on the cad 425) and love it.
I guess once I get the small motor ready for the longhorn I have a fresh quadra jet for it.

bruin_d · 05-29-2011, 10:34 AM

750 Edelbrock here

Shyguy · 05-29-2011, 12:00 PM

I am running the stock Q-jet off of my 350 on a stock 454 and it is working out ok.

bo-w · 05-29-2011, 03:22 PM

Thanks all I'm just weighing options . Iv got a holley 570 was going to use on a small block I don't have any more . Way too small I'll probably sell and get a 700 + cfm for the truck thx again
Posted via Mobile Device

A.T. RockDriller · 05-29-2011, 06:39 PM

As an old Mr. Goodwrench graduate........(1978 thru 1983).........
Wentworth Chevrolet Truck Shop......... Portland, Oregon
I learned all the tricks from the best of the best on how to repair....modify....
or maximize the Rochester Q-jet.
There is no doubt, if done properly, that the R-Chester 4-Jet is the best carb available for BBC heavy duty applications.
A good Q-jet tech can give you the best performance and economy from the same carb if ya' give him time to Dyno or road test the jet & needle sets...
Most anyone who has ever jumped into a rig with a big-block and stepped on it got quite a thrill either from "off the line" or from the mid rpm torque curve, but if you invest some time & patience into it......you can get the full yield of torque possible...bottom to top....from your BBC with that carb.
You can get pretty close by the #'s on the bench.
But by actually putting the engine to work, you can find that magic combination that makes that big-block just sing....
Just sayin'........(not sellin')

A.T. RockDriller · 05-29-2011, 06:47 PM

For the record....
We recorded well over 1000 CFM on the stock Q-Jet off of a '76 454 truck on the bench.
That's a ton of air.
Needless to say..... you sure do need to get it right on the fuel/metering end.

There should be a Q-Jet wizard somewhere near you.
He's probably really old....or busy fishin'.

bo-w · 05-29-2011, 10:18 PM

Quote:

Originally Posted by A.T. RockDriller

For the record....
We recorded well over 1000 CFM on the stock Q-Jet off of a '76 454 truck on the bench.
That's a ton of air.
Needless to say..... you sure do need to get it right on the fuel/metering end.

There should be a Q-Jet wizard somewhere near you.
He's probably really old....or busy fishin'.

lol thanks for the input A.T. RockDriller i'll keep it in mind . I have rebuilt 2 Q-jets (stock rebuilds) with success it was just a P.I.T.A . i really like Holleys for simplicity of tunning and parts support. I am new to my area so i dont know about a Q-jet guru here. I also dont really know the finer ins and outs of the Q-jets so maby I will do a bit more research on the matter . thanks again

**70cst** · 05-29-2011, 10:33 PM

Stock Q-jet on my 402 Just got it refurbished and its on its way to Ohio from Ca.

dougo · 05-29-2011, 10:38 PM

Running a Q-jet on my 454. No problems, in fact has been better performing than the eb that was on there previously.
Posted via Mobile Device

bo-w · 05-29-2011, 10:43 PM

Quote:

Originally Posted by 70cst

Stock Q-jet on my 402 Just got it refurbished and its on its way to Ohio from Ca.

where did you send it off to it ya dont mind me asking? im new to the area so dont know what or who is around. thanks

fastwillie 696969 · 05-29-2011, 10:47 PM

Quote:

Originally Posted by bo-w

where did you send it off to it ya dont mind me asking? im new to the area so dont know what or who is around. thanks

check out roseville rod shop great shop

**70cst** · 05-29-2011, 10:51 PM

Quote:

Originally Posted by bo-w

where did you send it off to it ya dont mind me asking? im new to the area so dont know what or who is around. thanks

I am 90% sure this is where the carb went...if not I will make a correction.
http://www.thecarbshop.com/

bo-w · 05-29-2011, 10:58 PM

awsome 70cst thank you much for the info.

prostreetC-10 · 05-30-2011, 01:32 AM

Quote:

Originally Posted by A.T. RockDriller

We recorded well over 1000 CFM on the stock Q-Jet off of a '76 454 truck on the bench.

Hmmm.....having a really hard time buying it. What flow bench did you use? You're telling me you got a stock 750 to well over 1,000? Please provide details.

**Tom Vogel** · 05-30-2011, 10:05 AM

The Quadrajet is an awesome carb if rebuilt correctly.. I would suggest the Carb Shop in Ontario Ca. Just cleaning it and putting in a carb kit is Not a rebuild. just sayin.

Gobbles · 05-30-2011, 10:07 AM

Holley 600 CFM on 454!

71Longbed · 05-30-2011, 12:06 PM

750 Mighty Demon on a 454

05-29-2011, 04:25 AM	#1
bo-w Registered User Join Date: May 2011 Location: sacramento Ca Posts: 84	what carb are all you bbc folks running ? so im just wondering what you all with 396-402 big blocks are running for a carb, and if you have gone smaller for mpg? any input is great, oh along with carb what other mods (engine wise ) are you running ? thanks all.

05-29-2011, 05:27 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: what carb are all you bbc folks running ? I am running the stock Q-jet. With the smaller primaries and large secondaries it works very well on the big blocks. JIm __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

05-29-2011, 07:04 AM	#4
sstone69 Registered User Join Date: Oct 2010 Location: Tucker, GA Posts: 128	Re: what carb are all you bbc folks running ? Stock Q-jet on my 396 Posted via Mobile Device __________________ "You gonna pull them pistols or whistle dixie ?"

05-29-2011, 10:14 AM	#5
landsurvey1 Registered User Join Date: Jan 2009 Location: Arizona Posts: 404	Re: what carb are all you bbc folks running ? Edelbrock 750, 465 BB, 400HP and 450 lb/ft Torque.

05-29-2011, 10:17 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: what carb are all you bbc folks running ? I had a quadra jet rebuilt for my 402, I had thought it was a big block carb when I had it done, ran like crap. Bought an Edelbrock 750 (same as on the cad 425) and love it. I guess once I get the small motor ready for the longhorn I have a fresh quadra jet for it.

05-29-2011, 10:34 AM	#7
bruin_d Registered User Join Date: Mar 2011 Location: Chesapeake, VA Posts: 578	Re: what carb are all you bbc folks running ? 750 Edelbrock here __________________ My 72 Suburban Build - http://67-72chevytrucks.com/vboard/s...d.php?t=454019 79 Volvo Turbo LS Build - http://67-72chevytrucks.com/vboard/s...d.php?t=594252 Buggy Bed for son - http://67-72chevytrucks.com/vboard/s...d.php?t=657350

05-29-2011, 12:00 PM	#8
Shyguy Junior Member Join Date: Dec 2006 Location: Southeast Missouri Posts: 2,436	Re: what carb are all you bbc folks running ? I am running the stock Q-jet off of my 350 on a stock 454 and it is working out ok. __________________ '67 Chevy C-20 short stepper - build complete, 454/SM-465. '75 C-30 Single Cab DRW-350 small block/NP-435. '77 GMC-6500 Dump Truck, 427 Tall Deck. '92 GMC K-3500 Duallie, 454/4L80E.

05-29-2011, 03:22 PM	#9
bo-w Registered User Join Date: May 2011 Location: sacramento Ca Posts: 84	Re: what carb are all you bbc folks running ? Thanks all I'm just weighing options . Iv got a holley 570 was going to use on a small block I don't have any more . Way too small I'll probably sell and get a 700 + cfm for the truck thx again Posted via Mobile Device

05-29-2011, 06:39 PM	#10
A.T. RockDriller Registered User Join Date: Feb 2011 Location: Orient, Oregon Posts: 722	Re: what carb are all you bbc folks running ? As an old Mr. Goodwrench graduate........(1978 thru 1983)......... Wentworth Chevrolet Truck Shop......... Portland, Oregon I learned all the tricks from the best of the best on how to repair....modify.... or maximize the Rochester Q-jet. There is no doubt, if done properly, that the R-Chester 4-Jet is the best carb available for BBC heavy duty applications. A good Q-jet tech can give you the best performance and economy from the same carb if ya' give him time to Dyno or road test the jet & needle sets... Most anyone who has ever jumped into a rig with a big-block and stepped on it got quite a thrill either from "off the line" or from the mid rpm torque curve, but if you invest some time & patience into it......you can get the full yield of torque possible...bottom to top....from your BBC with that carb. You can get pretty close by the #'s on the bench. But by actually putting the engine to work, you can find that magic combination that makes that big-block just sing.... Just sayin'........(not sellin') __________________ Les Hunter '59 3803 someday to be 3853 '63 GMC K1000...351E, TH400 Daily '66 GMC 4000...351C, 5&2

05-29-2011, 06:47 PM	#11
A.T. RockDriller Registered User Join Date: Feb 2011 Location: Orient, Oregon Posts: 722	Re: what carb are all you bbc folks running ? For the record.... We recorded well over 1000 CFM on the stock Q-Jet off of a '76 454 truck on the bench. That's a ton of air. Needless to say..... you sure do need to get it right on the fuel/metering end. There should be a Q-Jet wizard somewhere near you. He's probably really old....or busy fishin'. __________________ Les Hunter '59 3803 someday to be 3853 '63 GMC K1000...351E, TH400 Daily '66 GMC 4000...351C, 5&2

05-29-2011, 10:33 PM	#13
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,365	Re: what carb are all you bbc folks running ? Stock Q-jet on my 402 Just got it refurbished and its on its way to Ohio from Ca. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! Last edited by 70cst; 05-29-2011 at 10:34 PM.

05-29-2011, 10:38 PM	#14
dougo Registered User Join Date: Feb 2010 Location: Southern California Posts: 543	Re: what carb are all you bbc folks running ? Running a Q-jet on my 454. No problems, in fact has been better performing than the eb that was on there previously. Posted via Mobile Device __________________ Doug '72 GMC K2500 Suburban 4x4

05-29-2011, 10:58 PM	#18
bo-w Registered User Join Date: May 2011 Location: sacramento Ca Posts: 84	Re: what carb are all you bbc folks running ? awsome 70cst thank you much for the info.

05-30-2011, 10:05 AM	#20
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,564	Re: what carb are all you bbc folks running ? The Quadrajet is an awesome carb if rebuilt correctly.. I would suggest the Carb Shop in Ontario Ca. Just cleaning it and putting in a carb kit is Not a rebuild. just sayin.

05-30-2011, 10:07 AM	#21
Gobbles Registered User Join Date: Sep 2010 Location: British Columbia Posts: 484	Re: what carb are all you bbc folks running ? Holley 600 CFM on 454! __________________ Trevor "You already said spite"



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05-30-2011, 12:06 PM	#22
71Longbed Not Mine But A beauty Join Date: Aug 2004 Location: Southern CaL Posts: 368	Re: what carb are all you bbc folks running ? 750 Mighty Demon on a 454 __________________ 68 Chevy Shortbed 454/400 2000 Chevrolet Camaro SS 6spd 2011 Silverado 5.3 6spd auto

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