6 liter swap

[HAULIN IT]

Chris, I'm going to help a friend install a 6.0/auto in a '65 GMC 1/2 ton 2wd, we are using the front suspension from an '84. He's a very capeable mechanic. My part will be general helping & the fab work. I went through your posts on your swap. In the end, would you recommend the second set of engine mounts or should I make them. If they work out well & are under about $150 it would be worth it to just buy them I'm thinking. For the exhaust, did the truck manifolds fit reasonably well & you just decided to go to the headers or didn't any of the manifolds work out? As far as the wiring/ecm, ect. would you use the stock harness again or do a Painless or someones stand alone unit? Like allot of us, he has multiple projects going. He has a '65 Chevy 1/2 ton 2wd that we put the new front, power brakes, Ramjet 502 w/Richmond 6 speed, air & all. Some of the stuff (front end, brake booster, ect.) will be easier this time around since we did the figuring on the last one. The new truck has a Dana 44 rear with 3.54 gears, it will stay for a while, probably just do springs & spindles in the front & a flip in the rear to get it sitting better. Any input would be great from anyone who has done the LS swap. Much appreciated. Thanks, Lorne     

[Captkaos]

As far as engine mounts, I personally would get a piece of 3/8" plate, mark it and drill the holes and use the factory clams on it.  One will need a countersunk head.  ( I actually plan to make a couple of these myself )

If you factory harness was good and not hacked up, I would use it and just remove the pieces you don't need.  Mine had half the end of it missing along with a whole section going to the fuse panel.

The truck manifolds didn't work for me.  F-body manifolds did.  If the Thorleys don't get completed before I want to get it running, I may use those, or build me a set of headers since I have to have the whole exhaust built for the turbo's.

[HAULIN IT]

Chris, Did it turn out to be just the '98 F-body manifolds that fit or any of them? This will be kinda a low buck, daily driver item so headers aren't a must if some readily available manifolds fit. Anything else you can think of that may pose a problem? Thanks, Lorne

[team39763]

Those thorley's look like they're gonna be nice.  One thing I did notice on our trucks(73-87) is that some trucks seem to be different(as far as fitting headers).  I couldn't fit truck mani's or headers, so I cut until I could fit F-bod headers.  A buddy used F-bod headers and didn't have to cut.  A guy on another forum used truck headers.  Another guy used truck mani's.  Maybe it all depends on the motor mounts?

[Captkaos]

It depends on the year of the manifolds.  The ones that I used were off the truck, I had to ground the Emmissions stuff off and plug some holes.  They were 2000 6.0L manifolds.