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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: gsxrinthe9s on October 18, 2011, 07:38:31 am

Title: LT1 HELP
Post by: gsxrinthe9s on October 18, 2011, 07:38:31 am: Have 87 silveraldo 4 wd with a 3 speed auto just came across a low mileage 1996 LT1
That came with everything like the computer wiring harness ect.the 305 that's in the truck seems ok just really want just a little more performance. Question is will this engine work with the current 3 speed auto. Will the headers off the 305 work on the lt.I'm assuming other than air compressor clearance everything eles is easy
Title: Re: LT1 HELP
Post by: gsxrinthe9s on October 18, 2011, 10:14:36 am: Looks like I should have posted this in a different part of the site
Sorry about that. First day on site and to lame to know how to move this to were it belongs
Title: Re: LT1 HELP
Post by: slammed79 on October 19, 2011, 08:38:18 am: In my opinion, you won't be too happy with the lt1 if you do a lot of towing. Car motors aren't as torquey as the truck engines. And changing the cam may do weird things to the computer. Not too sure if thats 100% accurate, but someone will prolly pipe up if I'm wrong.

Also, if depending on the deal, you can find the 5.3 LS engine with harness in for what some people seem to think their LT1's are worth.
Title: Re: LT1 HELP
Post by: gsxrinthe9s on October 19, 2011, 09:31:28 am: Thanks for the reply to be honest I don't really do much towing
And i didn't compare the specs of the LT vs a 305 2 barrel
I just assumed the LT would be a big improvement
I only have $425 into the complete engine it has 72k on it.
I did find out the engine will work with the turbo 350
But it will have issues is what I'm told. So if I go with this engine
Guess I need to upgrade the trans as well. There's nothing wrong
With the 305 that's in it other than a complete lack of balls
I am open to any and all suggestions
Title: Re: LT1 HELP
Post by: slammed79 on October 19, 2011, 09:55:26 am: I have a friend that just got a complete 6.0 lsx from a wrecking yard for 500. GMPP makes an kit to install a TH400 behind one, its something to do with the crank trigger I think.

Try getting the computer flashed to delete the trans, or find one from a stick shift car, that'll solve any trans issues.
Title: Re: LT1 HELP
Post by: thirsty on October 19, 2011, 12:40:53 pm: Quote from: gsxrinthe9s on October 19, 2011, 09:31:28 am

There's nothing wrong With the 305 that's in it other than a complete lack of balls
I am open to any and all suggestions

Cubic inches is the best fix for that.
Title: Re: LT1 HELP
Post by: Captkaos on October 19, 2011, 02:47:19 pm: You will be happy with the LT1, they make good power, and you can use a TH350.
Title: Re: LT1 HELP
Post by: gsxrinthe9s on October 19, 2011, 04:31:02 pm: So Captkaos in your opinion will there is there anything I need to do to make this LT work ok with the turbo 350
Title: Re: LT1 HELP
Post by: gsxrinthe9s on October 19, 2011, 04:43:10 pm: I want to thank everyone for there suggestions you have been more help than you know
So I guess I'm going for it. Need to pick up some things like all new belts including serpentine
Hoses get this thing cleaned up and painted. And read up on this swap the one thing I have learned there's always something that you forget. Or don't plan on
Title: Re: LT1 HELP
Post by: Captkaos on October 19, 2011, 04:50:57 pm: You will have to tune the ECM and provide a sensor for speed for the ECM.
Title: Re: LT1 HELP
Post by: gsxrinthe9s on October 19, 2011, 05:00:32 pm: Thanks Chris think this is a next payday thing but you guys have me rolling the right direction
Title: Re: LT1 HELP
Post by: roadrage41 on October 24, 2011, 01:45:11 pm: Quote from: thirsty on October 19, 2011, 12:40:53 pm
Cubic inches is the best fix for that.

I knew i was doing something wrong!

as far as the lt1 goes is it iron or aluminum headed? at this point in its life you can probably tell by looking at it. if it's iron, id sell it. if its aluminum, id probably still sell it, just for more money. If you're gonna spend a bunch of money on a swap, swap to something reliable.