[PunchT37]

I,m with Pastry. 3.23 gear with a 703 cam is prolly all you need. Keep the rest unless you want it real quiet. Then work on exhaust.

[Squidward]

Originally Posted by PunchT37

I,m with Pastry. 3.23 gear with a 703 cam is prolly all you need. Keep the rest unless you want it real quiet. Then work on exhaust.

Another 703 supporter. The 702 isn't even all that lumpy in my 350. The 703 in my 400 has just enough attitude without getting rude and unmanageable.

I assume you have a BOP 10 bolt? That would mean a series 3 carrier for your current 4.11's, so 3.36 or 3.55 would be a better choice if you want to stick with the same posi carrier. To go smaller, you'd have to get a new posi carrier, and then your options become limited.

Change the cam, make sure your valve springs are matched and/or get new ones, and get into a 3.36 gear. 3.36 won't be an ideal highway gear, but it will be a considerable improvement.

The intake change to the RPM would be better suited to your new combo.