SS RRR

IMO if the LT1 block is used it's still a LT1.

jsetzer

Mine is still an lt1.

Using the block and heads.

The Engineer

If you're David Copperfield I "guess" you could possibly turn an LT engine into an LS.

WD

slomarao

an LT will never turn LS

96capricemgr

An LT-1 is the 70s engine the LT1 is the 90s one seems to be some confusion above about that.

An aquaintance has a Donovan aluminum block machined for reverse flow cooling, the WP drive, uses a stock opti, and reverse flow cooling heads. Is that an LT1?

rock1501

but most conversions still need the opti for the signal for the injector pulse.
I have a oldskool rear mount distributer with a crank trigger for timing and the opti for fuel.
I still consider mine a LT1 since I have an LT1 block

95Bird

I still consider mine an lt1

AdioSS

I was going to ask about Jeff's Donovan/LT1 also

Is it an LT1 if you put AFR/Dart/etc heads on it? Personally I think the aluminum block converted to LT1 front counts.

96capricemgr

Actually he made two of those blocks and sold one off. I am just waiting for that thing to pop up somewhere.

I don't know that heads are that big a deal, I mean few of the cars running converted heads are anything that noteworthy anyway. I can think of some turbo cars making amazing power on GM castings one just over 1000rwhp.

I think some of the cars that actually try and go fast using GM parts are the ones far more impressive, using knowledge to go fast over checkbook.

speed_demon24

When you aren't allowed to race in the LTx shootout.