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'65 F250; 352; 4.10 D60 rear. Stock engine except for intake (Performer 390 intake) and headers.
-I know about RV cams, used one before in a Jeep, and heard Thumpr cams, love the sound at idle but a little to aggressive and might affect performance seems like.
-That being said, what is the best cam in between the two that will help the stock engine with a Edelbroke 390/4bbl besides a RV cam?
-Looking for a great sound and performance.
-The truck is not a daily driver but can be if I wanted.
Thanks again,
JB
Use the Edelbrock cam that is designed to match your intake. I can’t tell from your photo whether that is the Edelbrock Performer or Performed RPM intake.
The performer camshaft is basically what you are referring to as a “RV” cam. It will raise the torque from off idle to ~5K RPM. It will NOT give you an aggressive sound at idle. The performer intake does not have the port or runner size to work well with more aggressive camshaft profiles which yield a pronounced “potato..potato...potato” thump at idle and a power/torque curve that takes off at ~1500 RPM. If you want that kinda of stuff use the performer RPM intake and the matching camshaft (doesn’t have to be an Edelbrock cam; I have the comp cam 272 paired with the RPM manifold and it behaves well, although there is no exhaust crossover in the RPM intake which increases warmup time following cold start). Edelbrock tech support is helpful and knowledgeable, maybe give them a call and tell them what you want.
The performer camshaft is basically what you are referring to as a “RV” cam. It will raise the torque from off idle to ~5K RPM. It will NOT give you an aggressive sound at idle. The performer intake does not have the port or runner size to work well with more aggressive camshaft profiles which yield a pronounced “potato..potato...potato” thump at idle and a power/torque curve that takes off at ~1500 RPM. If you want that kinda of stuff use the performer RPM intake and the matching camshaft (doesn’t have to be an Edelbrock cam; I have the comp cam 272 paired with the RPM manifold and it behaves well, although there is no exhaust crossover in the RPM intake which increases warmup time following cold start). Edelbrock tech support is helpful and knowledgeable, maybe give them a call and tell them what you want.
I was taught in the past from a Ford freak that a lumpy idle actually has a lot to do with ignition timing. Everything still has to work with everything else so getting a distributor recurve for maximum power at 6000 RPM won't help you if the intake starves at 4500 RPM. This is just reiterating what has been said by others. Once you match a cam to the intake and your intended driving RPM then work on the dizzy and improve your "ahk ah taw" sound a bit more. The Ford guy demonstrated this on his 1978 F150 with sleeper 429 on propane. Weighed over 5000 lbs with his skinny butt in it and wailed on 5.0L Mustangs half throttle. Nice lump with the advance set high but he retarded it for better mileage and it resulted in less power and barely a lump.
I was taught in the past from a Ford freak that a lumpy idle actually has a lot to do with ignition timing. Everything still has to work with everything else so getting a distributor recurve for maximum power at 6000 RPM won't help you if the intake starves at 4500 RPM. This is just reiterating what has been said by others. Once you match a cam to the intake and your intended driving RPM then work on the dizzy and improve your "ahk ah taw" sound a bit more. The Ford guy demonstrated this on his 1978 F150 with sleeper 429 on propane. Weighed over 5000 lbs with his skinny butt in it and wailed on 5.0L Mustangs half throttle. Nice lump with the advance set high but he retarded it for better mileage and it resulted in less power and barely a lump.
