[1967chevelle454]

It should be around 10.5:1 maybe a little less. I'm going with the 3.42 because I have a 3.73 now and it pulls way too many rpm's on the highway. It should still be low enough because you don't want a real low gear with a big block. Big blocks make enough torque already.

[454C10]

leave in the 3.73's and invest in a gear vendor OD if you want to lower the rpms.

Keep in mind that a 292H makes the engine rev smoother at higher rpms so it will not feel so buzzy. You should at least try it with the 3.73's to see how it feels before swapping gears.

I run the 292H in a 350 in a 2800 pound car. Has a 5 spd manual trans. I ran 3.54 gears, 3.70 gears, and 3.90 gears. And the 3.90's were the best match for the cam. Sure, it ran OK with the 3.54 gears but the 3.90's were much better. And that is with only 26 inch tall tires and a 2.95:1 first gear ratio!

So a 350 (actually a 362 cid) in a 2800 pound car is like running a 465 cid in a 3600 pound car. That cam needs at least a 3.73 gear (big block or not).

[1967chevelle454]

na, I'm gonna stick with the tranny I have. It's eithier 3.42 or 3.55 I'm gonna go with. It doesn't have to match just perfect. I'm not going for the fastest car I can, mines just going to be a restomod kind of deal. I want to keep my tranny and the lower rpms for highway. It'll be fine.