moparnorth
Well-Known Member
What Carb should I put on 440 with manual transmission and n96 fresh air going in 70 Coronet?
stock carb for 1970 Coronet RT 440 with 4 speed and N96 fresh air ramcharger hood was a AVS 4737s according to mymopar.com chart therefore would this be my best chose? i would like to go stock as possible.
If you want stock then go for it, they work too but from my experience they have more heat related issues. Today's fuel blends are made for EFI, not for sitting in a bowl on top of a 185+ degree motor so don't be surprised if you need a phenolic spacer to insulate it. Hell I had to put a spacer under my QF as well. Big difference between the 2 regarding heat is the Carter style carbs are 2 piece carbs so your float bowl is the same chunk of aluminum that's bolted to the intake... direct heat transfer. Holley based carbs have a throttle plate then the main body followed by metering blocks and last your float bowl so every part is separated by a gasket meaning you shed heat at every separation. Today's fuels suck for our old cars!stock carb for 1970 Coronet RT 440 with 4 speed and N96 fresh air ramcharger hood was a AVS 4737s according to mymopar.com chart therefore would this be my best chose? i would like to go stock as possible.
stock carb for 1970 Coronet RT 440 with 4 speed and N96 fresh air ramcharger hood was a AVS 4737s according to mymopar.com chart therefore would this be my best chose? i would like to go stock as possible.
the car's intended use cruising and 2 hour 75MPH road trips stock engine with mild cam with factory 906 or 452 heads, factory HP exhaust manifolds with 323 rear gears and about 10:1 compression.IMO...
I concur wholeheartedly....but it depends on if you want to maintain correct appearance and operation and function (with modifications to "fix" innitial drive away emission issues). The origional Carter AVS 4737S is an excellent carb for general all around operation, with the adjustable secondary air valve. It has been mentioned by others, what is the car's intended use? What are/is the other mods being contemplated? More cam, after market heads, headers, rear gear ratio, etc. These mods can effect the carb's selection. Recurving the distributor's advance curve will help engine response as well.
My personal preference is origional appearance and operation.
BOB RENTON
the car's intended use cruising and 2 hour 75MPH road trips stock engine with mild cam with factory 906 or 452 heads, factory HP exhaust manifolds with 323 rear gears and about 10:1 compression.We can’t answer your question yet.
How are you going to drive this car? Drag racing, 2 hour 75MPH road trips, local cruising.
Is the engine stock or more cam and compression?
what rear end gears?
I think we need a photo to get the proper answer.What Carb should I put on 440 with manual transmission and n96 fresh air going in 70 Coronet?