Stupid question about heads
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Junior Member
Joined: Jan 2001
Posts: 35
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From: Palmer, Alaska
Stupid question about heads
HI all, I am not really that smart when it comes to heads and engines all around, but I was wondering if 350 heads can possible fit on a 305, anyway possible (i.e. double gasket etc...)???
If there is please let me know
By the way,
is $400 for vortec heads a good deal??
Thanks,
Ryan
If there is please let me know
By the way,
is $400 for vortec heads a good deal??
Thanks,
Ryan
Supreme Member
Joined: Jul 1999
Posts: 1,431
Likes: 1
From: Huntsville, AL
Car: '00 Chevrolet Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
Yes, 350 heads will fit a 305. There are a couple of things that you need to watch out for however...
1)Valve Size: Big valves may not clear the cylinder bores on a 305. 1.94/1.50 seems to be the biggest valves that you can fit on a 305 withough clearance problems.
2)Combustion Chamber Size: Most 350 heads have at least 64cc combustion chambers. This will send your compression ratio down the tubes on a 305. You may have to get the heads milled to bring the chamber volume down to around 55-58cc.
-Mark W.
'88 SC Camaro w/ 305 TBI
1)Valve Size: Big valves may not clear the cylinder bores on a 305. 1.94/1.50 seems to be the biggest valves that you can fit on a 305 withough clearance problems.
2)Combustion Chamber Size: Most 350 heads have at least 64cc combustion chambers. This will send your compression ratio down the tubes on a 305. You may have to get the heads milled to bring the chamber volume down to around 55-58cc.
-Mark W.
'88 SC Camaro w/ 305 TBI
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