1971 360 question

[tvt59]

Not necessarily at all. I run a 750 double pumper on my stock stroke 340. I tried everything from 670’s to 870’s on it, the 750 double pumper with mechanical secondaries is by far the best fit, confirmed with an afr gauge as well. Just a street car, moderately sized cam but by no means “big”.

750’s on a 360 with a decent cam/build is very common.

750 is not too big if the tune is good. On my 421 I've tried a 950, a 1000, and a 1040 and the 1040 makes the most power according to the mph on the timeslip.

 

[Dart Frog]

My two cents, a 650 AVS or even a Holly generally will give you better throttle response due to the slightly smaller primaries. The 750 Will shine on top generally. This is a very general scenario I believe gears and cam etc play a huge part. That's why well tuned thermoquad can give you the best of both worlds.

 

[middleagecrisis]

Not necessarily at all. I run a 750 double pumper on my stock stroke 340. I tried everything from 670’s to 870’s on it, the 750 double pumper with mechanical secondaries is by far the best fit, confirmed with an afr gauge as well. Just a street car, moderately sized cam but by no means “big”.

750’s on a 360 with a decent cam/build is very common.

750 vacuum secondary is definitely not too big for even a mild street motor. I personally run a double pumper on any high-performance street motor that I build. Just my .02 worth.