73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: Dave W on June 08, 2019, 05:26:21 PM

Title: Replacement 2 barrel carburetor options???
Post by: Dave W on June 08, 2019, 05:26:21 PM

 :oI have a 78 2wd c10. 305v8 2 barrel rochester.
I bought a refurbished Rochester about a year ago
And always had trouble with the fuel inlet leaking.
I tried the self tapping re-thread fixture.. no luck.
Tried it again with some marine JB weld it is about 90%
Good.
But I know eventually I may need to replace it.
Any other makes in 2 barrel NEW out there, (carter/holley)that will bolt right up?
I know I may possibly have to go to a manual choke with some
Brands.
Under $350 budget
Thanks in advance!!

Title: Re: Replacement 2 barrel carburetor options???
Post by: Stewart G Griffin on June 08, 2019, 06:18:53 PM

Sorry i can't help too much at the moment.

i had the exact same problem on a 2G reman.  Most remans are not really that good.   i went to the junkyard to get a factory inlet and problem solved.

If it has to be new, then a holley 2300 may sort of bolt in with an adapter.

Or get a high quality reman from a more reputable rebuilder.

Or get a new intake---then you'll have plenty of new 4bbl carbs to choose from ;D

i'll try to add more later.


P.S.
If it's leaking, DON'T RUN IT.

Title: Re: Replacement 2 barrel carburetor options???
Post by: Stewart G Griffin on June 08, 2019, 06:28:17 PM

The other thing you could do is go TBI, but that's going to be more than the $350 budget......

Title: Re: Replacement 2 barrel carburetor options???
Post by: Stewart G Griffin on June 08, 2019, 06:35:02 PM

Brand new  Weber 38-DGES would be neat.



Sorry, not trying to blow you off----i'm just busy.

This topic fascinates me---if i didn't overheat my 305, i would still be  running a 2G.

Title: Re: Replacement 2 barrel carburetor options???
Post by: Stewart G Griffin on June 14, 2019, 01:06:15 PM

Hmmmmm..............Interesting..........

https://www.holley.com/blog/post/holley_sniper_efi_2gc_small_bore/

Title: Re: Replacement 2 barrel carburetor options???
Post by: JohnnyPopper on June 14, 2019, 03:23:41 PM

Nice find!

I run a Qjet on a 350, but wonder if this would make a good replacement.

I may call the 'expert' hotline right after I fill my diff with a ziplock  bag full of SAE 90!

Title: Re: Replacement 2 barrel carburetor options???
Post by: JohnnyPopper on June 14, 2019, 06:55:12 PM

So digging a little deeper, they may a direct QJet replacement, however they're for non-emission vehicles.  :(

Any word if SEMA is still working on raising the smog years to 1980?

Title: Re: Replacement 2 barrel carburetor options???
Post by: Stewart G Griffin on June 22, 2019, 01:49:55 PM

i forgot---you may want to try ebay for NOS carbs.


Example:
https://www.ebay.com/itm/NOS-Rochester-2GC-2Jet-Carburetor-for-1971-1972-Chevrolet-GMC-Truck-17054660-Gov/153414939221?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D58654%26meid%3Df7316d76136b44978075e8459cc75b58%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D401733026476%26itm%3D153414939221&_trksid=p2047675.c100005.m1851