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Old 10-18-2010, 06:52 AM
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355 or 383?

I'm new to the site, first post.
I recently picked up an early 70's 350 4bolt main block. Now I am trying to figure out if i want to run it as a 355 or stroke it to 383. The car it would be going into is an 86 Monte SS. Not a daily driver, but if the sun is out, you can bet that i'll drive it. I'm thinking of doing manual gears. Not planning to track it. Just some cruising, spirited driving, and a fair share of freeway action. My ego is telling me to stroke it, but i'm thinking that I can't go wrong with either. I'm wanting to get about 400hp to the back wheels. I realize that I'll need to change my rear. Any suggestions? Are there good stroker kits out there that you or someone you know else had a positive experience with? I will have a machine shop do majority of the work.
Thanks for looking.

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Old 10-18-2010, 07:22 AM
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If you want that much power and to still be streetable you are gonna want to go the 383 route.
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Old 10-18-2010, 08:20 AM
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well how about just do a rebuild (stock) and put a mini blower on it.
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Old 10-18-2010, 10:25 AM
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400 at the wheels will require 500 at the flywheel.

delawarebill has a good idea there. A small blower will make the power you want on a 350 platform.

To do it naturally aspirated will require building a 383, a good set of heads, 850 carb on a high-rise, dual-plane intake and a good set of long-tube 1 3/4" headers along with a 10:1 static compression ratio, lumpy cam, loose converter and gears.

Personally, the blower makes sense to me.
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Old 10-18-2010, 01:16 PM
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I would think that adding a blower would be about an additional $2-4K compared to building a stroker, not to mention the additional plumbing, hardware, tuning. With the stroker, it seemed that most of the money went to a beefy bottom end- all forged, and a good set of heads. I would think that the blower would still require the forged bottom end.

Maybe I'm over-thinking this.
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Old 10-18-2010, 03:39 PM
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To get 500hp out of a n/a 383 you will need to put about as much money into it as you would for a blown 350. Either one will need forged internals though.
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