General Category > Quadrajet Carb Talk and Tips
cam selection
Cliff Ruggles:
I'd have him grind one based on the 350 TPI profile with about 6-10 additional degrees of seat timing. This will reduce octane requirements at the higher compression ratio and still idle smooth, and have pretty much the same street manners as the 202/207 TPI cam would in a 350 build around 9 to 1 or so compression.
Another option is to just use the 202/207 grind an put high ratio rockers on it. This will add some effective duration and probably less cost than have a custom cam ground for it.......Cliff
tayto:
I will already be running 1.6 fill roller rockers, unfortunately they are the self aligning type and I am limited to higher ratios...
tayto:
I found the correct TPI roller cam with fuel pump lobe on eBay for $100. The local cam grinder only chargers $175 to regrind cams, maybe less depending if there is less grinding involved. With the TBI what should I shoot for for lift? The TPI cam with 1.6 rockers is .430/.442 should I shoot closer to .500 if I get a custom grind?
tayto:
I found a set of 1.7 Scorpion aluminium full roller rockers, would this be a better choice rather than regrinding the cam? Or maybe regrind and use both?
Cliff Ruggles:
1.7 ratio rockers on the 202/207 TBI cam would be a home-run, IMHO......Cliff
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