advice with 427 truck motor

[thebabybrahma]

I found a low mile 427 truck motor for a good deal. Thinking about throwing it in my '84 GMC c-15.
What are the watchouts for these motors - other than the heads are low perf? any other oddball things about them or should i just get it and sell it to one of the bracket racers to make a large mountain motor out of? thanks

[Lonnies Performance]

They have a very beefy bottom end (4 bolt, steel crank). Pistons are heavy & have 1 extra oil ring.

If you put on an early set of closed chamber oval port car heads & a decent cam, It will run very well. Due to heavy pistons, I would probably keep it under 6000rpm.

[sierra4x4]

I agree with Lonnies Performance. The stock heads will have 1.84 intake valves in them. The stock engine will still perform very well compared to a mild small block. You will run into a little trouble mounting the accessories but it can be done. If you need some help with the accessories I can show you some pictures of what I did on my 427. One very important thing to check when buying a tall deck is not all of them were drilled to mount a starter to the block. Mine did not have the starter holes but I run a 4 speed so I used a pre 72 bellhousing that mounts the starter to the bellhousing not the block.

[Pyrotechnic]

I wouldn't spend a bunch on getting one to work, but if you can get the motor cheap then it would be a good deal. If it's a low mile motor it should last you a long time.