Building a 383 stroker

Reply Subscribe

Thread Tools

Search this Thread

Mar 12, 2010 | 09:43 AM

delgal

Thread Starter

Instructor

Joined: Aug 2009

Posts: 126

Likes: 0

From: marcinelle hainaut

Building a 383 stroker

Hello everyone,

Does the "short block a 350CI L48 is a good basis to achieve a" 383 stroker "performance? (To get a lot of" Torque ")

If this is not the case, what "short block" is best?

Thank you,

david

Mar 12, 2010 | 09:46 AM

Gordonm

Race Director

Joined: Dec 1999

Posts: 19,610

Likes: 778

From: Forked River NJ

The block should be OK. You have to replace the crank and pistons for a 383 and the rods should also be replaced. So the only thing you will be using is the block.

Mar 12, 2010 | 11:25 AM

Al Davis

Racer

Joined: May 2008

Posts: 318

Likes: 0

From: Wheaton, Illinois

Should use a 4 bolt block if building a 383. You can find them at your local machine shop, junk yard, Craigs list ect. If your under 450hp you can use a Scatt 9000 rotating assembly, if your going to run it hard get a forged assembly.

Mar 12, 2010 | 11:59 AM

BLOCKMAN

Drifting

Joined: Dec 2005

Posts: 1,360

Likes: 3

From: NORTHEAST

Sonic test the block before you spend any money on it!!

Mar 12, 2010 | 09:24 PM

onebadmofo

Racer

Joined: Mar 2007

Posts: 332

Likes: 0

From: Fairmount IN

I just got a est. for a machine shop it prep a 30yr old block.....550 + 150 to clearence it for 383 crank total of 700 plus if you don't have a block add another 100 for a grand total of 800.

check this out new GM block ready for 383 crank
http://www.sdpc2000.com/details/gm-p...parts/88962516

Mar 13, 2010 | 08:25 AM

BLOCKMAN

Drifting

Joined: Dec 2005

Posts: 1,360

Likes: 3

From: NORTHEAST

Quote:

Originally Posted by onebadmofo

The problem with GM blocks they still need to be soinic tested and their decks aree all over the place and if you put a torque plate on the block and check the cylinder for roundness I don't think you will be hapey with what you see.

Even though its new they need a lot of work to make them right!!

Mar 13, 2010 | 10:30 AM

onebadmofo

Racer

Joined: Mar 2007

Posts: 332

Likes: 0

From: Fairmount IN

I bought this block (http://www.sdpc2000.com/details/gm-p...parts/10066034) in 2005 took to the machine shop to check it out with the pistons to check the wall clearearence and they said it was perfect and also had a very nice hone onit. All I had to do was install the oil plugs and dowls in, clearence it for the 383 crank and rods, run it thru a washer then I put it togeather.

Mar 13, 2010 | 10:51 AM

BKbroiler

Le Mans Master

Joined: May 2002

Posts: 5,086

Likes: 787

From: Lebanon Township New Jersey

I'm using the original L48 block in mine. Not the most powerful 383 in the world but its got about 100 quarter mile passes on it with no problems. Cast crank too.