sdb8976
Member
Hello, I've been wrestling with conflicting information for... well, cumulatively, a couple years now. I have a recently top-end rebuilt 318, with the 340 purple cam, specs:
Valve Lift (INT/EXH): .429/.444
An eliminator-style airgap intake (4bbl), holley 4160 600cfm carb.
904 transmission with tf-1 kit, freshly rebuilt
8 1/4 axle with 2.71:1 gearing
My question, or plea for advice is, aside from headers (duh) do I need to change the gearing in my diff if I do not plan on racing at all? It's purely street, cruiser status. The car is a 1976 Plymouth fury sport. numbers matching! Anywho, if anyone on here feels like taking the time to even say "you're fine" or "get bigger gears" I'd appreciate the heck out of it.
Valve Lift (INT/EXH): .429/.444
- ADV Duration (INT/EXH): 279/289
- Duration @ .050" (INT/EXH): 209/220
- Centerline (degrees): 114
- Power Range (RPM): 1200-5200
An eliminator-style airgap intake (4bbl), holley 4160 600cfm carb.
904 transmission with tf-1 kit, freshly rebuilt
8 1/4 axle with 2.71:1 gearing
My question, or plea for advice is, aside from headers (duh) do I need to change the gearing in my diff if I do not plan on racing at all? It's purely street, cruiser status. The car is a 1976 Plymouth fury sport. numbers matching! Anywho, if anyone on here feels like taking the time to even say "you're fine" or "get bigger gears" I'd appreciate the heck out of it.