Hi everyone. I'm not sure I have this correct, but my question is in re. to the LT-1 engine used by Chevy in the mid to late 60's and perhaps 1970. I believe it was a 327/370?? I'm wondering how they ever got that much HP from that motor?? What were the internals?? Spec's? Many thanks, Carmine.
LT-1 engine
Carmine2
21 - 25 of 25 Posts
Joined
·
898 Posts
The 1996 LT-4 engine was a derivative of the 91 to 96 LT-1 engine and was a one only year and arguably one of the best cast iron small block engine ever made. It is under rated at 330-HP but having had two of these in 96 Vettes I believe it is a killer engine. At 350" and with aluminum heads Chev under-rated it so as not to conflict with the new LS1 coming out in 1997 at 345-HP. With a hot cam and headers the LT-4 will make close to 400-HP and is a bolt in for our tri-fives. The opti-spark was fixed by 1996 and they are very reliable... Al
Joined
·
226 Posts
I agree with Rick's statement about GM "recycling" names; LT-1 VS LT1; almost the same designation, but completely different engines. The 70 LT-1 in a Camaro was rated at 360 HP, in the Corvette that year, it was rated at 370 HP. Both carburetored! Only difference was the vehicle it was installed in. Insurance related ploy on GM's behalf. There's a lot more difference than just the "dash". Course the "newer" LT1 is a fuel injected, roller cammed, engine. I'm really not up to date on modern fuel injection engines, but seems to me, the LT1 is also a "reverse cooled" engine, and heads/blocks can't be swapped back and forth with the earlier engines. There's a member over on the "other" 55-57 Chevrolet site, putting an LT1 into a 55 Chevrolet hardtop, and he's finding it challenging with all the sensors involved to actually make it run. I'm sure he'll get it all figured out, but I just don't have that kind of "tolerance" for something "new". Old school is still cool! I am Butch/56sedandelivery.
Butch, swapping a 90s LT1 into another vehicle is not any more difficult than swapping an LS engine. The only thing is that's now a 25 year old design that's not supported as well in the aftermarket now, its time has passed, but it is still supported. The same thing has started with the early LS engines to a lesser degree.
If you don't like it, or LS stuff, then that's another thing. That's not technical, it's just bias.
If you don't like it, or LS stuff, then that's another thing. That's not technical, it's just bias.
Joined
·
1,144 Posts
I have an original LT-1 I bought back in 1989 for $1000, and zero miles. I think these were sold by GM back in the late 70's as a long-block with 2.02 angle-plug "Turbo heads" not bolted on. It has the steel crank. "pink rods", forged 11:1 pistons, and a solid cam. I freshened it up after sitting so long with just new rings, and bearings. It is an great engine, with a wide power band, and pulls hard on race gas. I currently have only 600 miles on it, and it is mentioned in this article about the car I have it in. It would make a great trifive engine.
https://bangshift.com/bangshiftapex...ature-street-legal-circle-track-camaro-unique-homebuilt-corner-burning-monster/
https://bangshift.com/bangshiftapex...ature-street-legal-circle-track-camaro-unique-homebuilt-corner-burning-monster/
21 - 25 of 25 Posts
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
