ok i read this but i am confued a little
---------------------------4.3 TBI to 350 TBI----------------------------------
To make this easier, I’m doing a fuel-injected engine to a fuel-injected engine. Meaning there’s no need for gas tank modifications. If you go from carbureted to EFI, or vice versa then you need a new Gas tank unit for the appropriate method.
Your job is A LOT simpler in most cases. But don’t let that fool you, its still a chore to do.
If you have a 4.3EFI from 87-93 TBI and you get a V8 from that same time frame that’s TBI, you have little or no wiring issues. Everything that plugs into the 4.3, will plug into the 350. When we did mine, we used everything from the 4.3 on the 350, including Throttle Body, Power steering, Water pump, Harness, and computer. But if you have a vortec, and are switching out, you need to pull harness and computer, and you need a complete 350, as most parts wont transfer. So with that in mind, here are the parts lists -
THESE PARTS *NEED* TO BE REMOVED-
(If 94+ vortec to any other 350, Harness and Computer)
THESE PARTS STAY-
Master Brake cylinder
Radiator (pull it to remove/install the engines though)
PARTS that will be *NEEDED* -
Engine mounts (See links at bottom of thread)
Headers (See links at bottom of thread)
Harness and computer (if 94+ swap)
***NOTE, when purchasing harness/computer or having a harness made, make SURE it’s for the proper Tranny and dash setup!!! Hate to plug it in, and not have it work!!! ****
Basically, its the same install path as the 2.2. Get your harness in, and computer, install the new engine mounts, then drop the engine in, plug it in, and install the headers. Put the radiator back in. Once again, I recommend the fans in front of the Core support. Get in and test it out. etc.
****For Both Installations- If you want the fan in FRONT of the V8, and behind the core support, you need to shorten the drive shaft, scoot the tranny back, pound some room on the firewall for engine tabs, and distributor clearance, and slide it all back on the Engine mount adaptors. Keep in mind, that makes it extremely hard to do menial tasks/tune ups, such as replacing spark plugs, installing new wires, and running the exhaust. ****
Now this was just a ROUGH sketch of a swap, and it answers most questions, with a few recommendations. Here are the links for the manuals, and parts -
JTR - lots of people use these guys
Advance adaptors, will have all your answers here too
Any MORE questions, post them in here, We'll be glad to help, plus this will clear out the clutter in the V8 forum, about everyone asking about swaps
Thanks guys, and many happy cylinders!
but one guy told me i could use the stock fan and the stock manifolds
also do i use the pulleys and stuff off the 350.