4.8 Stroker

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Oct 6, 2005 | 02:02 PM

#11

WhiteChevy3

TECH Enthusiast

Joined: Aug 2005

Posts: 612

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From: Oklahoma

any of yall know if anyone has buit a 383 out of the 5.3 blocks??

Oct 6, 2005 | 02:13 PM

#12

TurboGibbs

TECH Senior Member

iTrader: (6)

Joined: Jul 2005

Posts: 5,257

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From: Decatur, AL

Quote:

Originally Posted by UNDERR8D

Has any one built a 4.8 stroker motor using a LS1 or a LQ4/LQ9 crank?
Can it be done and is it worth the trouble?
If so what was all involved in making it happen?
Do you have to have custom pistons made or will stock pistons work?
What about rods, are they the same length, journal size, can you use the LS1 or LQ4/LQ9 rods?

Any info on this at all would be great!!!

The 4.8 has a longer rod to make up for the shorter stroke. This link is helpful.
http://www.mortec.com/borstrok.htm

Oct 6, 2005 | 10:54 PM

#13

ktmrider

TECH Fanatic

Joined: Apr 2003

Posts: 1,107

Likes: 2

From: Albuquerque, NM

Quote:

Originally Posted by WhiteChevy3

any of yall know if anyone has buit a 383 out of the 5.3 blocks??

Yep, and the motor plus truck is for sale right now!
Seriously, it is easy to do and makes for a fun project. Might not have saved too much cash over a 402/408ci crate motor but it sure beats watching Seinfeld reruns on TV at night. Plenty of 5.3 motors out there for way cheap. Also don't forget about the 4.8L motors if stroking it. Blocks and bore are identical, only difference is stroke as mentioned.