LS motor in a 64-66? Anybody? no really!

[Clyde65]

Has anyone (Successfully)installed an ls motor ( 4.8,5.3,6.0L) in one of our trucks? I need assistance on the motor mounts. I used the stockers and it fit ( surprise here) but the headers/manifolds do not. I also bought some CPP perches, they didnt work. Any assistance would be great. BTW I have absolutely no welding skills at all.

John

1965 Chevy Short Narrow
Dad has 64 C20 Crew Cab

[shortbed70]

Do a search there are a few on here that have them and I cant remember the name but his is fast...

[shortbed70]

Search Super73 he has a very nice ls in his.

[BR3W CITY]

Where were you having clearance problems with the manifolds? and which vehicle is your ls swap from?

trucks/fbodies/vettes had different manifolds. You may also want to consider S10/ls swap headers as they are designed to clear the smaller frame on the s10.

[jgarverick]

i used trailblazer ss manifolds and homemade plates. they fit but theres no egr on the manifold.

[gostranger]

i just got mine in last week it is a ls vortec out of a 2000 silverado i bought the adapter plates to go to a standard chevy mount i also could not use the stock motor mounts so i bought some mounts from speedway and welded them in i moved my motor forward 3'' and up 3'' to make sure the oil pan was not lower thank the crossmember so when i air out the air ride suspension the pan wont hit the ground

[gostranger]

i will post some more pics when there is something to see that looks a little better

[Clyde65]

My engine is out of a 2002 Silverado with 44K miles, it has the 4l60e trans. I have Sanderson Headers that are for the S10 conversion. I tried to use CPP mounts but they put the engine way too far forward, will hit my rad and cooling fans. So this is why I used my stockers. I have seen the ones that ECE sells, and I am trying to do this on a budget, so you see 230.00 for those is a little high for me right now. THere are some other ones available

http://www.resto-modtechnology.com/s...%7C-GMC/Detail

But they are chrome and I dont want chrome, they are also $220.00. I am trying to do surgury on some stock ones I have extra, so to remove the hump on the top and some down towards the motor mount, then use the same guage steel, weld it up flat.

Any other suggestions?

[Clyde65]

I almost forgot, I have purchased a set of Fbody manifolds and the DS fits like it was made for it, the passenger side , does not. Can you cut and reweld on a manifold? it seams to have a ridge on the bottom of the manifold, without that I think it would fit.

I appreciate all of y'alls help.

[gostranger]

i would look at www.speedwaymotors.com
they may have reasonable priced motor mounts i think i recall them having some like you were looking for for under 100 bux

[BR3W CITY]

ya, you can re-weld a manifold, but if its a cast peice it makes it trickier.
Speedway Motors has some ls1 "tight fit" headers for $175.

[Clyde65]

I looked at speedway motors, they dont have the motor mounts like I think I need. Also their Headers are center drop and I need them to go back and dump. Thanks guys for your help, keep the ideas comming!

[jgarverick]

another option might be early camaro/firebird manifolds. they are made of tubing and not cast. easier to modify. 98-99 i think

[Clyde65]

I have some 98-99 F bosy manifolds, the Drivers side works great, the passenger doesnt. Keep the ideas coming please!

[tommys66]

where is your problem with fitment? If it is primarily with the top frame rail, dont worry about trimming it back to fit.

[Clyde65]

I am trimimng the top frame rail this weekend, it is needed since I again am changing the motor mounts so stuff fits

[hill64step]

Clyde: Were you thinking of trying mounts like these?:

http://www.brotherstrucks.com/prodin...number=ESM6372

Brothers has a mount kit for genIII motors too, but the price is a bit much.

[Clyde65]

Yes that is what I have, except there is another hole on the lower portion flat piece. You can gen them from POL also. About the same price. I saw those you are talking about and yea, $230.00 is way too high in my opinion. besides if these will work, then I can continue my build. It has lagged longer than expected and I wanted, just because of the exhaust manifold/header fitment.

[hill64step]

Originally Posted by Clyde65

I tried to use CPP mounts but they put the engine way too far forward, will hit my rad and cooling fans.

Just curious.. Which of the CPP mounts did you try? I was looking at the side weld in ones.

[Clyde65]

I used the gray ones, tubular. bolt in. they just set the engine too far forward so my rad/cooling fans wouldn't fit. The weld in are fine, except if you want to change it back, there would req more work. besides, I dont have welding skills. I still have them if you are wanting them. I paid $129.00 plus ship[ping for them.

[hill64step]

Right now I'm still shopping for a engine. Just doing my research before I get knee deep into anything.

[Clyde65]

Ok Dude, Shop ON! Hoever when your ready, let me know, I will tell you where to get what and approximately how much, my pain your gain. I can tell you which motor mounts, headers, fuel pump, filters, etc etc to make your build a little easier in your 64-66.

[Clyde65]

zOh, nuts, forgot again. THis last weekend, I got my motor mounts in, engine put back, headers on , driveshaft in, some wiring hooked up, now I can finish the wiring and fill up the fluids, then......exhaust.

[structures]

Clyde can you post some pics of the engine bay showing your install? Also some pics of the mounts and headers? That would be helpful.

[TR65]

Guys,

Just for reference, you can make the late model LS motor mounts work and they are really nice and are out of the way of everything.

See TomLambs thread for how he did it.

http://67-72chevytrucks.com/vboard/s...=346598&page=2

Here is how I did it using SSR mounts that came with my engine, the AC compressor, exhaust manifolds etc. from the SSR fit with no interference. Just had to change the PS pump resevoir.

It takes some fabrication but the engine is very easy to get in and out. Just dangle it over the crossmember and drop in the six mounting bolts.

TR