305 heads
11-21-2009, 02:19 PM
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Car: 2004 GMC 2500HD
Engine: Duramax LLY
Transmission: Allison
305 heads
Im doing a quick motor swap in my car because the original is toast. I have another running 305 from a truck that Im dropping in. The truck motor has casting number 376450 heads and the bad motor has 14014416 heads. Should I bother swapping heads or just leave as is?
11-21-2009, 04:28 PM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: 305 heads
Do you plan on future engine upgrades or a swap? If so, I'd leave the 416 heads out of the car, so they can be worked in the meantime - ported and polished these heads flo quite well, and would be great on top of a 350 later.
11-21-2009, 10:14 PM
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Car: 2004 GMC 2500HD
Engine: Duramax LLY
Transmission: Allison
Re: 305 heads
My plan is to just get the car running and sell it. I have both sets of heads so I would like to sell the better ones with the car...
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