350 Vs 383
12-15-2003, 07:02 PM
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Car: 87 Z-28
Engine: 383 HSR w/supercharger, AFR heads
Transmission: 700r4 w/2500 stall
Axle/Gears: 3:73
350 Vs 383
What are (if any) the benefits of a 350 over a 383? I see many people with 350's bored .030 over and wonder why they wouldn't just stroke it for the extra displacement.
I am about to begin building a 383 and just wanted some input on the pros and cons of either engine.
I am about to begin building a 383 and just wanted some input on the pros and cons of either engine.
12-15-2003, 07:36 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Stroking to 383 involves the .030" overbore, new crank, and new pistons. Unless the crank is internally balanced, you'll need externally balanced damper and flexplate/flywheel. Last I've seen externally balanced flexplates are only available in 14" diameter, vs. the 12-3/4" of our 3rd gens, and moving the starter out to accomodate that causes header interference problems, so a ministarter is often required. Stroked engines require grinding on the block oil pan rail to clear the rods, and often require a small-base-circle cam as well.
In case you haven't picked up on this yet, a 383 is hardly a free lunch.
The pro is it will have a good deal more power than a 355.
In case you haven't picked up on this yet, a 383 is hardly a free lunch.
The pro is it will have a good deal more power than a 355.
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