late model small blocks like LT1's or LS1's
 

Anyone runnin this type of engine swap?
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Re: late model small blocks like LT1's or LS1's
 

There are a few members who are running them if you go to the engine and drivetrain forum they have a whole sub forum for LSx swaps here's a link to the LS swap thread http://67-72chevytrucks.com/vboard/s...d.php?t=412159

Re: late model small blocks like LT1's or LS1's
 

ls1.com has thousands of swaps unbeliveable amount of information there. I personally have done two swaps, A6.0 4l80e into my 68 lemans convert and a 5.3 4l60e into a 89 c-1500 silverado.

Re: late model small blocks like LT1's or LS1's
 

I am.;)

Re: late model small blocks like LT1's or LS1's
 

all day every day

Re: late model small blocks like LT1's or LS1's
 

I am! 4.8/4l60e, 65 chevy SWB

Re: late model small blocks like LT1's or LS1's
 

Lots of us here:metal:

Click here: http://67-72chevytrucks.com/vboard/s...d.php?t=457939

Re: late model small blocks like LT1's or LS1's
 

6.0 swapped here, and for reference I'm pretty sure its unfair to call an LT1 late model...that thing was ancient as soon as it started ;)

Re: late model small blocks like LT1's or LS1's
 

Get out o here!!
We have some healthy LT1s roaming around in the Upstate of SC...
one stock bottom end (132k) with H/C going 9s (1/4) with issues.
Several others getting it done too!!
Looking at getting one for my 88 LX Coupe so I can go to the LTx shootout!

Re: late model small blocks like LT1's or LS1's
 

running an LT1 is the mechanical equivalent to being lefthanded :)

Re: late model small blocks like LT1's or LS1's
 

the genII sbc LT1/LT4 swaps were hot several years ago. No days you're passing on power you could have by selecting one.

The gen III/IV sbc motors are the way to go. From 4.8L on up to 7.0L.... and more with the aftermarket LSX blocks.

Re: late model small blocks like LT1's or LS1's
 

Doesn't the 8.1 still count as an lsx, or are we counting that as a Gen III/IV big block?

Re: late model small blocks like LT1's or LS1's
 

the 8.1 is a whole 'nother animal...and yes it would be considered a big block.

Re: late model small blocks like LT1's or LS1's
 

i know its a different block and motor altogether, but i guess it tends to get lumped into the same category on forums...

Re: late model small blocks like LT1's or LS1's
 

I think its more "vortec" then lsx.

Re: late model small blocks like LT1's or LS1's
 

Whats so ancient about them??

Re: late model small blocks like LT1's or LS1's
 

Yay my thread got popular lol and Shon I like your style, I've always wanted to put a SBC in one of those fox bodies, right now I have a LT1 and a 4L60E i pulled out of a 95 Buick Roadmaster stationwagon, getting a 6speed from a trans am and rebuilding that LT1 then dropping both in my truck has crossed my mind a few times, i could get decent power out of the Pontiac 350 but id love getting good mpg's so I wont feel so bad at the gas station
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Re: late model small blocks like LT1's or LS1's
 

I think the achilies heal of the LT1 is the optispark. To me it just made it relatively unreliable.

Re: late model small blocks like LT1's or LS1's
 

The biggest advance they had was reverse flow cooling...which wasn't even GM's design. Evans designed the system and GM put it into the LT1, then proceeded to get sued for it.
Then, as mentioned, the opti-spark...which was poorly designed from the get go. On top of that, guys have been converting SBC heads (MUCH OLDER tech) to work with the reverse flow cooling on the LT1, because they flowed better AND because so few people ever made heads for it. The tech was dead before it started,

Re: late model small blocks like LT1's or LS1's
 

Ive owned several LT1s never had many Optispark problems...They last atleast 100K.
Iron LT1 & Iron Vortec heads share the same port design & flow VERY well. Then you got the LT4 head. I see no reason to adapt gen 1 heads to a LT1.

Re: late model small blocks like LT1's or LS1's
 

having not done the conversion myself I guess I can't really say firsthand, but there are countless threads on the subject. Same goes for machining SBC manifolds to fit the lt platform.

Ends up being kind of the stepchild motor. Its not the pioneer like the sbc, but it never got all the way to "modern fuel injected", quite like the ls series. I mean there are some cool TPI manifolds, and it was cool to get fuel injection before things like the Holley and Edel-broke stand alone systems came out in force.