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 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)

- - Stock CFM? (https://67-72chevytrucks.com/vboard/showthread.php?t=317950)

Benelli

12-06-2008 04:43 PM

Stock CFM?

What is the stock CFM on the 4 barrel carbs in the 79s on the 350s?

What is the lobe on a "RV" Cam too?

slugish

12-07-2008 12:37 AM

Re: Stock CFM?

Im not an expert but Ithink most of the 350,s during these years came with a 750 cfm quadrajet carb (Rochester)

RV CAMS provide good torque with a duration around 212 - 218 & a lift of .o45 -.o46 range. The main advantage of these cams is torque PULLING POWER ) with a decent increase in horsepower .

worthirt_99

12-07-2008 03:02 PM

Re: Stock CFM?

If you are going to get a new carb, you should only need about a 625-650CFM. Slugish is right on about the carb, but that carb came on about everything that GM made. I believe the the 454 is included in this. The Q-jet basically is "tuned" for your application and will only run what is needed CFM wise.

All times are GMT -4. The time now is 07:13 AM.