Engine specs for 72 LT-1
Burning Brakes
Joined: Oct 2012
Posts: 1,152
Likes: 252
Last edited by Dynra Rockets; Jan 28, 2018 at 04:39 PM.
Le Mans Master
Joined: Oct 2007
Posts: 7,454
Likes: 977
From: RI, Now Franklin/Nashville TN
1970 LT-1 had 11:1 compression versus the 71/72 LT-1 had 9:1 compression. All LT-1's had solid lifter cams. The 1970 LT-1 is the "real" LT-1. 71/72 LT-1's had the same compression as the later L-82's (9:1) which had hydraulic cams and similar HP (around 250 Net HP for the L-82, 330 Gross HP for the 71 LT-1.
LT-1 cams also had more duration and slightly more lift, apples to apples, solid to hydraulic cam the duration for the Solid cam LT-1 is 234/239, lift .459/.485 from what I can find on the conversion factor versus the L-82 cam of 222 duration and .450/.460 lift
LT-1 cams also had more duration and slightly more lift, apples to apples, solid to hydraulic cam the duration for the Solid cam LT-1 is 234/239, lift .459/.485 from what I can find on the conversion factor versus the L-82 cam of 222 duration and .450/.460 lift
Last edited by jb78L-82; Jan 28, 2018 at 05:06 PM.
Instructor
Joined: Nov 2012
Posts: 180
Likes: 19
From: West Lower Mich.
1970 LT-1 had 11:1 compression versus the 71/72 LT-1 had 9:1 compression. All LT-1's had solid lifter cams. The 1970 LT-1 is the "real" LT-1. 71/72 LT-1's had the same compression as the later L-82's (9:1) which had hydraulic cams and similar HP (around 250 Net HP for the L-82, 330 Gross HP for the 71 LT-1.
LT-1 cams also had more duration and slightly more lift, apples to apples, solid to hydraulic cam the duration for the Solid cam LT-1 is 234/239, lift .459/.485 from what I can find on the conversion factor versus the L-82 cam of 222 duration and .450/.460 lift
LT-1 cams also had more duration and slightly more lift, apples to apples, solid to hydraulic cam the duration for the Solid cam LT-1 is 234/239, lift .459/.485 from what I can find on the conversion factor versus the L-82 cam of 222 duration and .450/.460 lift
Melting Slicks
Joined: Oct 2001
Posts: 2,065
Likes: 1,395
From: Halifax, Nova Scotia, Canada
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