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Old 05-31-2014, 12:06 PM   #12
edgooch
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Join Date: Dec 2013
Location: Wasilla, AK
Posts: 39
Re: 8.1L swap questions

Quote:
Originally Posted by OldCreek View Post
I used an aftermarket engine cross member and the stock pan. The stock front 72 crossmember doesn't have to be changed. I think stock '72 bbc mounts and cross members should work. Use 72 stock bbc stock manifolds. Like Dirty said, it should be a simple bolt in mount up.

I used the stock 8.1 harness and computer. I flashed it with hptuners. Seemed to work fine but I sold it before i drove it. It did drive up the trailer and had no c.e.l. come on for the many months I had it running.

You should be able to use the stock radiator. I used an electric fan. And, I think you should be able to use the stock tach if you run a jumper/resistor to a switched 12v source...
I hope to use the 72 raditor and an electric fan as well. Glad to hear of your success. The motor mounts and exhaust manifolds shouldn't be too hard to find. All good info - Thanks!

I am a little confused. You used an after market front crossmember but are saying that the stock one will fit under the 8.1 oil pan, right?
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72 Custom Camper 4x4
04 2500 HD - 8.1/Allison
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