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post #1 of (permalink) Old 08-09-2001, 10:31 AM
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383 kits?

Anyone know of a web site where I can get a 383 conversion kit for an old 350? Need crank, rods, pistons, etc.... Thanks.


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post #2 of (permalink) Old 08-09-2001, 11:36 AM
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Re: 383 kits?

www.summitracing.com

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post #3 of (permalink) Old 08-09-2001, 08:14 PM
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Re: 383 kits?

www.pawengineparts.com

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post #4 of (permalink) Old 08-09-2001, 09:28 PM
 
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Re: 383 kits?

www.speedomotive.com

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post #5 of (permalink) Old 08-10-2001, 02:14 AM
 
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Re: 383 kits?

http://www.dyno-flo.com

Haha, mines clicky[img]/wwwthreads_images/icons/shocked.gif[/img]

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post #6 of (permalink) Old 08-10-2001, 10:44 AM
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Re: 383 kits?

Thanks for the sites.
Has anyone built a 383 before from a 350? Do you use the 350 or 400 rods?


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post #7 of (permalink) Old 08-10-2001, 11:48 AM
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Re: 383 kits?

Two different ways to do it. Use a 400 crank and rods in a 350 block (you must have the journals on the crank turned down to fit the 350 block)

OR you can use a 350 block and a special 383 stroker crank. I belive that you use 350 rods with this.

We are building a Vortec 383 using the first method for my brother's camaro right now.

Later,
Shaneb

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post #8 of (permalink) Old 08-10-2001, 11:59 AM
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Re: 383 kits?

Use a 400 crank and 6" rods and short pistons. The 6" rods will cost you, but, its the way to go. You really need to stop by a shop in your area that does block machining. They will tell you what works and what dosen't. The 383 conversion is a realitivley cheap build-up and will produce 350 to 450 HP and loads of torque depending on how much $$$ you have. It is the only way to build a HP smallblock with a not so great budget.

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post #9 of (permalink) Old 08-10-2001, 12:45 PM
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Re: 383 kits?

I found at northerautopart.com a 383 kit w/ crank for $600. The machine shop is about $200 for boring, cleaning and notching the block for 383.


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post #10 of (permalink) Old 08-10-2001, 06:44 PM
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Re: 383 kits?

The low cost 383 option is to find a SBC 400 crank (which is not easy find or cheap) and have the main journals of the 400 crank turned down by a crank grinding service to fit the 350 block (which again is not as cheap as a standard -.010 / -.010 crank grinding service fee). Using the SBC 400 rods (which I have a real personal dislike for) and stock 350 pistons would be the least cost piston / connecting rod combination. All the other piston / connecting rod options for building a 383 are going to be more expensive.

If your engine building budget is limited, then building a 350 is best dollar for horsepower option. I don't mean to butt heads with the "there is no replacement for displacement" engine builders. I've seen several 350's with aftermarket heads, make more power than a low cost built 383. My personal opinion for a budget built performance SBC 350, is spend extra money on aftermarket heads (like World Products SR's), an aluminum intake manifold (like an Edelbrock Performer) instead of an extra 33 cubic inches.
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