Comp's XE Cams

cpearce said

I don't disagree, however tire height can play a factor. With a 27 or 28" tire, you can easily get away with 3.55's. Additionally, a 4 speed, or lock up auto make a difference.

One thing about gearing without OD, it is a game of calculated compromises.

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depends on what you're used to. my old 5th ave, when I put 3.55's in with the lockup 904 and 27" tires, I hated it....felt like the engine was strung out, cranking along at 3100-3300RPM at 70-75 on the interstate. I was much happier once I added the 42RH, which dropped freeway cruise to about 2000 RPM at 70. helped fuel economy, and my comp XE262 cammed 360 handled the lower RPM just fine.

my duster has an A833OD with 3.23's and 25" tall tires, and when I go to a big bolt pattern swap, I'm considering a ranger 8.8 axle with 3.08's to get my freeway cruise RPM a little more comfortable, since the OD is only .73 vs. the .69 of the auto.