The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1967 - 1972 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=3)
-   -   (small) carb cfms? (https://67-72chevytrucks.com/vboard/showthread.php?t=256119)

2bits 08-30-2007 12:24 AM

(small) carb cfms?
 
I just went from a Rochester Monojet to a Rochester 2bbl both stock, and I was wondering what the cfm's were for either or both if anyone has a resource, I have been searching my manuals, this site, inliners, stovebolt and google all day and I cannot find out.

I am thinking the 1bbl is around 300 and the 2bbl is around 400 cfm from what I have been able to piece together...

Thanks :)

2bits 08-30-2007 12:27 PM

Re: (small) carb cfms?
 
Posted at inliner's.org for those interested:

Manufacturer Model: CFM @ 1.5” Hg; CFM @ 3.0” Hg; Throttle Bore, in. (mm); Venturi Diameter, in. (mm)


Rochester
M Monojet: 113; 160; 1 7/16 (36); 1 7/32 (31)
M Monojet: 148; 210; 1 11/16 (42); 1 5/16 (33)
M Monojet: 177; 250; 1 11/16 (42); 1 ½ (38)
2GC: 197; 278; 1 7/16 (36); 1 3/32 (28)
2GC: 246; 352; 1 11/16 (42); 1 3/16 (30)
2GC: 269; 381; 1 11/16 (42); 1 ¼ (32)
2GC: 299; 423; 1 11/16 (42); 1 5/16 (33)
2GC: 308; 435; 1 11/16 (42); 1 3/8 (35)


All times are GMT -4. The time now is 10:11 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com