Stroker question for an engine novice

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Jun 27, 2002 | 11:56 AM

92TripleBlack

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From: Windermere FL

Stroker question for an engine novice

I'm a little confused. I've heard conflicting information on what needs to be done for a stroker. A 383 stroker:Does it need to be bored 0.030 over? And that would make the 396 a 0.060 overbore? Or is it just a function of longer cranks? I know the cranks are longer but I'm confused on the milling. Also, if they both require boring, why is the 396 so much more expensive?
Thanks
I'm not an engine builder, but I am willing to learn!

Jun 27, 2002 | 12:27 PM

MrJay

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From: Marietta, South Carolina, USA

Re: Stroker question for an engine novice (92TripleBlack)

A 0.030 over 350ci (bore 4.030) with a 400 (stroke 3.75) crank is 383 but if you bore 350 0.060 over and use the same crank you get 388 I think, but to get the 396 you will have to use a different crank a 3.875 stroker crank.
You just have more cranks out there so that is why they dont cost as much as the other most all crank companys make the 3.75 but only a few make the 3.875

Jay

Jun 27, 2002 | 12:43 PM

92TripleBlack

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From: Windermere FL

Re: Stroker question for an engine novice (MrJay)

Cool. Since I was going to use a forged crank anyway, I think I'll go 396.

Jun 27, 2002 | 12:58 PM

edsalinas

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From: Tucson Az

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Re: Stroker question for an engine novice (92TripleBlack)

Basically a 383 uses a 350 block, and a 400 crank. A 396 uses a 400 block with a 350 crank. 400 blocks are harder to find.

Eddie in Tucson. :crazy: :seeya :flag

[Modified by edsalinas, 4:59 PM 6/27/2002]

Jun 27, 2002 | 01:15 PM

BBA

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From: Jacksonville Fl

Re: Stroker question for an engine novice (edsalinas)

Quote:

Basically a 383 uses a 350 block, and a 400 crank. A 396 uses a 400 block with a 350 crank. 400 blocks are harder to find.

Nope....not at all. The 396 small block is a non-stock crank motor, wether in 400CI or 350CI blocks.

You might be referring to the old Big-Block 396 Chevy from way back and cinfusing things ( thats a totally different engine as well, which I think was a 360 block with a 427 crank in it ).

Jun 27, 2002 | 02:20 PM

edsalinas

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From: Tucson Az

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Re: Stroker question for an engine novice (BBA)

Sorry, I had my numbers wrong, I meant 377ci . . . . . . 8000 r engines, very popular with circle track drivers . . . . . . .

Eddie :sleep: :cheers:

Jun 27, 2002 | 05:36 PM

R23HTC

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From: Little Elm TX

Re: Stroker question for an engine novice (edsalinas)

There was a post a while back that had the specifics. There's another reason a 396 is more than a 383. The clearances are A WHOLE LIGHT TIGHTER. Not much room for error. Both require .030 over. Difference is the lenght of the rods and the clearance required for them.

Jun 27, 2002 | 05:46 PM

Guest

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Re: Stroker question for an engine novice (92TripleBlack)

The non-stock 396 is a 350 block bored out .030" with a crank that has 3.875" stroke rather than the 383's 3.75" stroke. The parts for a 396 don't cost any more than the parts for a 383 if you want an all forged motor. As stated, you must consider clearance issues more closely, mainly the area at the bottom of the cylinders must be machined for the longer stroke. This is the case for both 383 and 396.

[Modified by Mark84_L383, 1:52 PM 6/27/2002]