The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-13-2017, 04:57 PM   #1
Thebroski138
Registered User
 
Join Date: Oct 2017
Location: Tucson, Az
Posts: 2
2 Barrel size?

alright so i have a little problem, someone is giving me a 500 cfm holley 2bbl for my birthday but i dont know if i should use it, and if so i dont know what intake to run with it. Any advice would be very welcome and appreciated, thank you!
Thebroski138 is offline   Reply With Quote
Old 11-13-2017, 06:26 PM   #2
YoungPup1977
Registered User
 
Join Date: Jun 2015
Location: ()
Posts: 143
Re: 2 Barrel size?

Ask the one who is buying the 2 barrel to buy a 4 barrel instead....problem fixed.
__________________
()
YoungPup1977 is offline   Reply With Quote
Old 11-13-2017, 07:18 PM   #3
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 754
Re: 2 Barrel size?

What are you planning on using it on? What is the planned use for that vehicle?

500 cfm is probably overkill for a 250 six banger daily driver. Probably leave a built for the drag strip 454 gasping for breath.
Dead Parrot is offline   Reply With Quote
Old 11-13-2017, 09:37 PM   #4
Alex V.
Registered User
 
Alex V.'s Avatar
 
Join Date: Mar 2013
Location: Campbellsville, KY
Posts: 765
Re: 2 Barrel size?

500 CFM is pretty big for a 2 barrel - assuming it's going on a SBC, probably not as efficient as even a smaller 2 bbl. or equivalent-size 4 bbl. because air velocity won't be as good through the bigger venturis.

Intake? Whatever keeps air moving at normal driving RPM (<3,500) because I can see that big ol' 2 bbl. and a cavernous intake really hurting low and mid-speed manners.
__________________
Alex V.
------
1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.

1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.

Last edited by Alex V.; 11-13-2017 at 09:49 PM.
Alex V. is offline   Reply With Quote
Old 11-14-2017, 09:01 AM   #5
cadillac_al
Registered User
 
Join Date: Oct 2013
Location: Maine
Posts: 1,408
Re: 2 Barrel size?

I think only stock car racers use those carbs. I would prefer a 4bbl for everyday use. Most of the old 2bbl manifolds have been scrapped by now so you would most likely end up using an adapter on a 4bbl manifold. If he is buying it then you should recommend a 4bbl which should be close in price. If he already has the Holly.....I guess you could try it to make him happy or ebay it. I think there are still stock car classes that mandate 2bbl carbs and somebody may want it badly.
__________________
76 Chevy K20
76 GMC K15
77 Chevy C10
cadillac_al is offline   Reply With Quote
Old 11-14-2017, 03:15 PM   #6
68Gold/white
Registered User
 
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 1,041
Re: 2 Barrel size?

The 500 cfm 2 Bbls will only bolt up to a stock ford intake. Nothing GM v-8 wise has that type mount. It would need an adapter to use on a 4 Bbl intake. I am clueless how you could use it on a 6 banger. If he's giving it to you and you have room to store it, gladly take it. Maybe you can sell it or swap it in the future
68Gold/white is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com