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4.3L to 305 or 350  
1968IH
New User | Posts: 47 | Joined: 04/08
Posted: 05/30/08
06:02 PM

i have a 1988 GMC truck with a tired 4.3L V6 with a five speed.  How hard would it be to swap in a 305 or 350?  


KISS method - keep it simple stupid

 
SnoMan
Guru | Posts: 1284 | Joined: 03/08
Posted: 05/30/08
06:59 PM

Not hard at all. Pretty much a bolt in. The hardest part is the fuel system/control match up and that is not too hard either if you swap in a TBI motor. Given todays fuel prices, a 350 may not be wisest choice though.  


 
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