4.3 tbi swap for v8 tbi - The 1947 - Present Chevrolet & GMC Truck Message Board Network

The Fat man · 03-27-2006, 04:35 PM

Hi I am new here, I got a 87 with a bad motor currently 4.3 tbi. I would like to switch this for a 5.3 what needs to be changed? the biggest reason i want to change this is because I can't find a left side exhaust manifold for my 4.3

82c10 · 03-27-2006, 05:23 PM

too much stuff to swap for a 5.3 (IMO) i would just switch to a 5.7 (350) you have to change the prom, get the distributor for it, new motor mounts, and exhaust manifolds or headers

The Fat man · 03-27-2006, 05:55 PM

Alright, sorry another dumb one what is a prom

82c10 · 03-27-2006, 07:01 PM

computer chip

03-27-2006, 04:35 PM	#1
The Fat man Registered User Join Date: Mar 2006 Location: Canada Posts: 2	4.3 tbi swap for v8 tbi Hi I am new here, I got a 87 with a bad motor currently 4.3 tbi. I would like to switch this for a 5.3 what needs to be changed? the biggest reason i want to change this is because I can't find a left side exhaust manifold for my 4.3

03-27-2006, 05:23 PM	#2
82c10 needin' money Join Date: May 2005 Location: Chickasha, Oklahoma Posts: 1,106	Re: 4.3 tbi swap for v8 tbi too much stuff to swap for a 5.3 (IMO) i would just switch to a 5.7 (350) you have to change the prom, get the distributor for it, new motor mounts, and exhaust manifolds or headers __________________ *SWB Stands for Short Wide Bed* Last edited by 82c10; 03-27-2006 at 05:45 PM.

03-27-2006, 05:55 PM	#3
The Fat man Registered User Join Date: Mar 2006 Location: Canada Posts: 2	Re: 4.3 tbi swap for v8 tbi Alright, sorry another dumb one what is a prom

03-27-2006, 07:01 PM	#4
82c10 needin' money Join Date: May 2005 Location: Chickasha, Oklahoma Posts: 1,106	Re: 4.3 tbi swap for v8 tbi computer chip __________________ *SWB Stands for Short Wide Bed*



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