The 1947 - Present Chevrolet & GMC Truck Message Board Network

Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 99-06 Chevy and GMC Message Board


Thread Tools Display Modes
Old 11-14-2017, 12:44 PM   #1
Task Force Era
Senior Member
Task Force Era's Avatar
Join Date: Jan 2013
Location: Middlesex, N.C
Posts: 381
4.3 Swaps?

Probably not a very popular question.

But I have a 03 Silverado short bed regular cab with a blown up 4.3. I've thought about LS swapping it but I'm probably not gonna keep the truck so I scratched that idea.

So to my question. I can get 2000 and up model blazers dirt cheap at my local insurance auction with 4.3's. So will those model 4.3's work in my 03 truck??
Task Force Era is offline   Reply With Quote
Old 11-14-2017, 01:08 PM   #2
95 S_Trucker
Senior Member
95 S_Trucker's Avatar
Join Date: Oct 2009
Location: Lancaster, PA
Posts: 1,598
Re: 4.3 Swaps?

I would stay as close to the 2003 model year as you can. Somewhere between 2000 and 2002, a lot of the thread bosses in the blocks and heads were changed from standard to metric.

A 2003-2006(2004 was the last year for the blazer) will be a direct drop in. If you get one from a blazer, you may need to use the oil pan and pick up from your full size
-99 K2500 LS CCSB 7.4
-96 C3500 HD 7.4 NV4500 Rollback

My 85 Project:

78 Big10 Project:

96 Project:
95 S_Trucker is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 08:03 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013