V8 Vortec swap. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RyansToy · 03-23-2016, 02:42 PM

So I am torn in the direction I want to go with engine swaps.

One option is the vortec V8. I would like to find a 5.7L, but the 4.8, 5.3L would be options based on cost, and what jumps into my lap!

I want to eventually get a 5 speed manual (most likely a T5, but maybe a NV4500).

1)
How much of a PITA is taking an automatic trans motor and mating it to the manual trans? Does the ECU need to be changed? or can it be flashed? or is it a no-go?

2)
Is the gauge cluster mandatory to the ECU's function?

03-23-2016, 02:42 PM	#1
RyansToy Registered User Join Date: Aug 2015 Location: Nova Scotia Canada Posts: 145	V8 Vortec swap. So I am torn in the direction I want to go with engine swaps. One option is the vortec V8. I would like to find a 5.7L, but the 4.8, 5.3L would be options based on cost, and what jumps into my lap! I want to eventually get a 5 speed manual (most likely a T5, but maybe a NV4500). 1) How much of a PITA is taking an automatic trans motor and mating it to the manual trans? Does the ECU need to be changed? or can it be flashed? or is it a no-go? 2) Is the gauge cluster mandatory to the ECU's function? __________________ 1968 GMC truck 910 Trim (Canadian) 127" WB 3 on the Three Trans (Saginaw SM330) 250 ci L6 Engine HEI ignition (early 80s L6)

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