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Old 07-18-2010, 09:50 PM
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First Engine build. Need help/suggestions.

Ok. I have a 4 bolt, 350 block. It needs rebored. I'm thinking either going .40 over, and building a 355, or .30 over and building a 383, but i don't know how much money it would take to build the motor all roller. wondering about heads and intake. also internals. throw me some suggestions please.

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Old 07-19-2010, 12:10 AM
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I suggest you do a search for "383 stroker" or "350 engine build"...a million threads on both. Just FYI...a 350 bored .040 is 357 ci. A 350 bored .030 with a 3.75 stroke crank makes 383 ci. Also if your engine only needs an .030 bore then leave it at that, the more cylinder wall the better. READ, READ, READ the search info to familiarize yourself before you do anything.
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Old 07-19-2010, 12:18 AM
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Quote:
Originally Posted by Stroker93
Ok. I have a 4 bolt, 350 block. It needs rebored. I'm thinking either going .40 over, and building a 355, or .30 over and building a 383, but i don't know how much money it would take to build the motor all roller. wondering about heads and intake. also internals. throw me some suggestions please.
OK, first a little education. It's not .40 over, it's 0.040" over, as in forty thousandths. The way you have it written, it's four hundred thousandths and the walls ain't that thick. And it's not .30 over, which would be three hundred thousandths, it's 0.030" or thirty thousandths. Also, a 0.040" over 350 is a 357, not a 355.

Now that we have that out of the way, let's concentrate on what you want the motor to do. What vehicle will it be installed in? How much will it weigh? What rear gear ratio will you use. What transmission will you use? What torque converter stall will you use? Will the motor have to operate on pump gas or E85 or E10 or straight ethanol or straight methanol or a blend of nitromethane and cat pi$$? How about emissions? Will the car/truck/whatever have to pass emissions? Did you want to use a carburetor or electronic fuel injection? A flat tappet cam and kit can be had for just over a hundred dollars. A roller cam and kit will cost in excess of five/six hundred dollars depending on brand. What is your budget? What is the casting number on your block (on the ledge at the back of the block where the bellhousing bolts onto the motor). Will this be a street motor or a street/strip motor or a strip only motor or an ice-racing motor or a mud bog motor or will you set it up with a propeller to wind-drive the vehicle? Or what?
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Old 07-19-2010, 12:24 AM
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I should have known that 327NUT would tree me.
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Old 07-19-2010, 11:54 AM
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Thanks for the responses. I get the whole .030 over thing, it was a small typing error. i get that a 350 that is .030 over with a 3.75" stroke makes 383 cubes. I was wondering what would be more cost efficient. I'm wanting to make atleast 400-450 hp. I know if i go 383, that with the right setup it'll be a torquey sob. thinking about a tremec 6 speed. honestly i don't have a car at the moment. but i can pick up a 3rd gen camaro on the cheap.
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Old 07-19-2010, 09:23 PM
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Sorry Tech....I finally got one on 'ya

Stroker93...all you can do is build the engine on paper for both setups. I would think a full roller motor with good parts will cost about $800 to $1000 more. Believe me it ALWAYS pays to take your time and buy the parts you really want then to compromise just to get it on the road.
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