65Vert

Another question this time for a Mach1 I am working on. It has a 351W and someone said they are placing a 370cfm holley avenger (i think). It was said on another thread that it was advisable not to place more that 600cfm into a 289/302. Would there be a recommended limit for a 351 so as not to drown the engine?

JBradley500

650 CFM is probably about right for a near stock Windsor. 750 CFM may start to hurt performance.

atomsk680

370 is tooo small. i have a 650cfm edelbrock and i am thinking it isnt enough carb for my car. im thinking about getting a 700cfm st least

Justin66GT

Google "CFM calculator". And realize a naturally aspirated engine will have a hard time hitting 100% VE.

Justin

Soaring

Well, it sounds like a 2V carb. The larger CFM carbs are 4V. Here is what you are talking about. http://www.holley.com/0-7448.asp

65Vert

sorry...typo there...guy meant 670 cfm (is there one of those?)

Soaring

Yep!
http://www.holley.com/0-80681.asp

atomsk680

i need something like that

THUMPIN455

instead of writing it all again, just read my reply in this thread and ignore the parts about multiple carbs.. its background info that if understood can help you pick the right carb. Not tryin to tell you what to do, just providing information that was learned the hard way..

https://mustangforums.com/m_2168364/tm.htm