Thread: 454 Gen V Simple Build

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Originally Posted by Spicer411

I may consider a small cam to give it a little lope.

A small cam will not lope. You would have to get into more cam than you would need in order to get lope...and more static compression ratio to match with the cam. Any cam you install in a motor is not a stand-alone device, it must be coordinated with all the other systems to operate properly, particularly static compression ratio. The motor you are describing will be a low static compression ratio motor by virtue of the facts that....
1. It is a late model BBC.
2. It came out of an RV.
I wrote this tutorial a few years ago for the Crankshaft Coalition Wiki. It will explain the relationship between cam timing and static compression ratio.
http://www.crankshaftcoalition.com/w..._compatibility

With conventional camshafts, lope will begin to show up at around 215-220 degrees intake duration @0.050" tappet lift. Just so you know, lope is simply the sound of the motor being inefficient. It doesn't make the motor fast and all the old guys who know better will just laugh at you because they will know that your motor is slower than it would have been with the stock cam.

Originally Posted by Spicer411

I'm wanting to put it in a 1995 SWB GMC pickup.

Even if you were using all the electronic fuel injection and emissions equipment from the 1991 motor, it would still be illegal because you would be using older emissions equipment in a later model vehicle.

Perhaps one of the other fellows or gals on this forum will help you.

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