If I get a complete L31 Vortec 5.7L out of a 96-99 truck, can I use the L31's serpentine belt and accessory setup? As in run the factory setup of the motor's front end. Custom A/C lines is not a big deal. I can have those made.
L31 Serp Belt & Accys
- Thread starter FL85GrandPrix
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I have seen them on small blocks and an big blocks with adapter plates. Seems like on a big block you need an S10 four cylinder power steering pump pulley.
http://www.kwikperf.com/bbc_serp_kit.html
http://www.kwikperf.com/bbc_serp_kit.html
Opie Knievel
Rum Fueled Midnight Mechanic and Moderator
There is a member on here who is running the accessory drive from a '95 Suburban in a Grand Prix. I can't remember if the '96 and up is the exact same or not. I can compare the setup on the front of the vortech to a '95 or older engine tomorrow at work and see if they're the same. Maybe someone who already knows the answer will post before then.
Good deal. Thanks. I guess the question is when I get my bone yard L31, do I plan on converting the front end over to a 87-95 Serpt system like I have on my 89 K5 5.7L or can I use the L31's setup... I guess I should have asked that. Opie- Thanks in advance.
Opie Knievel
Rum Fueled Midnight Mechanic and Moderator
Sorry it took me so long to reply. I've had a busy couple of days. I checked a Vortec accessory drive against a TBI accessory drive and they are very similar. They use a different alternator and A/C compressor but they are pretty close to the same size. Unfortunately, the engines I checked had already had the accessories removed and I could only compare the brackets.
I'm guessing that if the TBI accessory drive will fit in a G Body that the Vortec drive would also fit. Hopefully someone here has tried it and can give a definitive answer.
This is the TBI drive with an A/C delete pulley installed.
This is the Vortec drive.
They're very similar.
I'm guessing that if the TBI accessory drive will fit in a G Body that the Vortec drive would also fit. Hopefully someone here has tried it and can give a definitive answer.
This is the TBI drive with an A/C delete pulley installed.
This is the Vortec drive.
They're very similar.
Great pics, thank you!!! I think it would work. I just dropped off my "metal" factory radiator which is leaking to a old school radiator shop in Tampa that boils them out and solders them up. That mechanical fan has got to go. I want the newer CS style 105+Amp alternator like my '89 K5 Blazer has (5.7L TBI w/factory serp) so I can run a LS1 F-body coolan fan setup. I believe I can make that work with a controller.
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