307 engine information needed
November 15th, 2008, 02:51 PM
#1
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Join Date: May 2007
Posts: 56
307 engine information needed
I have a 1988 cutlass supreme classic brougham with a (80-84 block casting 3161) 307 that uses flat tappet lifters and 5a heads in my , The original engine is a (85-90 block casting 4790) 307 with roller lifters and 7A heads. I DO NOT WANT 7A HEADS! My question is can I use 5A heads on the 85-90 roller engine as a direct exchange and no adjustments. Also do anyone know where to purchase short blocks? All comments welcome. Thanks Mike
Last edited by majcutlass; November 15th, 2008 at 03:15 PM. Reason: spelling error
November 16th, 2008, 07:39 AM
#2
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Join Date: Feb 2008
Location: Plano, TX
Posts: 11,798
Try the guys over at oldsgmail.com. Get on their mailing list, too. I am a member there and the senoir members really know the 307 inside and out.
Several of those members have websites FULL of great info about the G-body and the 307 engines. See the co-founder's pages.
I am thinking the head swap is pretty straightforward, but i do not know the details.
Several of those members have websites FULL of great info about the G-body and the 307 engines. See the co-founder's pages.
I am thinking the head swap is pretty straightforward, but i do not know the details.
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