My latest engine acquisition is a 1993 LO5 so I have been searching the web taking in information like a sponge. Here's some of what I found.
LO5 is the second to last iteration of the 1955 small block. In 1994 the LT 1 was introduced in the B body(corrected by Astro Jet below) and although somewhat similar it can not be directly traced to the legendary 1955 small block.
LM1 5.7 4bbl were superseded with the LO5 powerplant after 1988.
1995 was the LO5 last year of designation switching in 1996 to L31 with addition of Vortec heads and intake making 255 HP and 365 lb-ft. then used exclusively in Trucks. (My GMC has this stump puller)
LO5 has 4 bolt mainbearing caps but uses centre bolt valve covers.
LO5 in stock form made from 180 to 210 HP and 290 to 310 lb-ft.
9C1 Police versions used free flowing Cats and roller lifters (correction from C1 below) plus L98 camshaft. GM conservatively rated this as 205 HP and 300 lb-ft.
Truck L05's were rated at 210 HP and 310 lb-ft and have a distinguished service record, dating their lineage to the original Chevy small-block V8 of 1955.
small correction Ray, LT 1 was introduced in the 92 Corvette and the following year in the all new 4th gen F body. It was basis for the new Impala SS in 94 - suprised that Carl 1 did not jump all over you regarding that point!
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
small correction Ray, LT 1 was introduced in the 92 Corvette and the following year in the all new 4th gen F body. It was basis for the new Impala SS in 94 - suprised that Carl 1 did not jump all over you regarding that point!
Yes I was researching B bodies but that would be 94 wouldn't it. Can't rely on anything on the web anymore!
small correction Ray, LT 1 was introduced in the 92 Corvette and the following year in the all new 4th gen F body. It was basis for the new Impala SS in 94 - suprised that Carl 1 did not jump all over you regarding that point!
so whats the scoop on my 70 LT1 and i think grasshoppa is a little frosty this morning
small correction Ray, LT 1 was introduced in the 92 Corvette and the following year in the all new 4th gen F body. It was basis for the new Impala SS in 94 - suprised that Carl 1 did not jump all over you regarding that point!
so whats the scoop on my 70 LT1 and i think grasshoppa is a little frosty this morning
That's an LT-1 as opposed to LT 1. That little dash makes all the difference!
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
Try that decoder, I put in L88, L34, L48...thet're all 4 cylinders!!!
And that '70 LT1 is an original small block design while the LT-1 is a new design, being a reverse flow engine which allows coolant to cool heads first allowing for higher compression ratios and more HP..
And that '70 LT1 is an original small block design while the LT-1 is a new design, being a reverse flow engine which allows coolant to cool heads first allowing for higher compression ratios and more HP..
-- Edited by 73SC at 16:25, 2008-10-01
You've got it mixed up Ray, the LT-1 is the 1970 traditional small block design while the LT1 is the 1992 and up engine. That new Caddy is making you so giddy you can't type straight any more. Have you picked it up yet, or should I just look for various fresh burn-out marks throughout the streets of East York as evidence?
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
You've got it mixed up Ray, the LT-1 is the 1970 traditional small block design while the LT1 is the 1992 and up engine. That new Caddy is making you so giddy you can't type straight any more. Have you picked it up yet, or should I just look for various fresh burn-out marks throughout the streets of East York as evidence?
Thank goodness I have you to help me out Hillar. As far as the Fleetwood goes they delivered it and it's at JB's until I sort out the retirement of the Buick. Now I have another problem, Mary wants it! She learned to drive on her Dad's big boats the last one was a 78 Park Avenue so she is quite at home tossing around 5,000 lbs. of Detroit iron.
Years ago I had a 71 Corvette with the LT-1 350. I'll never forget the sound of that engine. The forged pistons always had a distintive voice until it warmed up, along with the lifters it sounded like it was always out of oil. Another guy I knew then had a 72 LT-1 but it never had the same harmony.
