350 vs 305
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Joined: Nov 2002
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From: Dubuque, IA
Car: 2006 'Nox 91 Camaro RS 91 1500 Silv
Engine: GM 3.8L, 305 SBC, 350 SBC
Transmission: Auto, auto, auto
350 vs 305
What are the differences in the block of the two engines? How big could you make a 305 by boring it, by boring and stroking it? Why can't you bore a 305 into a 350?(if indeed you can't)
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The as-cast cylinder wall thicknesses are the same between the two engines. But, since the 350 is a larger diameter, the castings themselves have to have different diameter cylinder castings. Therefore, boring a 305 to that diameter would make the cylinder walls too thin.
This question gets asked fairly often. A search would probably have yielded the answer quickly.
This question gets asked fairly often. A search would probably have yielded the answer quickly.
Thread Starter
Senior Member
Joined: Nov 2002
Posts: 613
Likes: 0
From: Dubuque, IA
Car: 2006 'Nox 91 Camaro RS 91 1500 Silv
Engine: GM 3.8L, 305 SBC, 350 SBC
Transmission: Auto, auto, auto
Didn't the search not like numbers before? Thanks, oh well, ede, vader, five7kid, go ahead and delete this thread
Last edited by Damien00677; Sep 7, 2003 at 12:02 AM.
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