difference in lt1 blocks? 92-97 for 383 build
10-11-2003, 02:01 PM
#3
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Join Date: Oct 2001
Location: newton, kansas, USA
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I think you just have 2 bolt and 4 bolt. I have mine out of a iron headed cadillac fleetwood and it was the same as my old aluminum headed motor. i believe they are all the same. Oh some of the iron headed motors did come with 265 cubic in LT1's i believe they are smaller stroke and bore. I'm not sure if you can bore and stroke them back out to 350 or not.
10-11-2003, 02:05 PM
#4
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Join Date: Sep 2001
Location: Woodstown, NJ
Posts: 4,154
Originally posted by Z95m6
I think you just have 2 bolt and 4 bolt. I have mine out of a iron headed cadillac fleetwood and it was the same as my old aluminum headed motor. i believe they are all the same. Oh some of the iron headed motors did come with 265 cubic in LT1's i believe they are smaller stroke and bore. I'm not sure if you can bore and stroke them back out to 350 or not.
I think you just have 2 bolt and 4 bolt. I have mine out of a iron headed cadillac fleetwood and it was the same as my old aluminum headed motor. i believe they are all the same. Oh some of the iron headed motors did come with 265 cubic in LT1's i believe they are smaller stroke and bore. I'm not sure if you can bore and stroke them back out to 350 or not.
They were L99s.
10-11-2003, 02:13 PM
#5
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Join Date: Oct 2001
Location: newton, kansas, USA
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Originally posted by RamAir95TA
They weren't called LT1s. They were L99s.
They weren't called LT1s.
They were L99s.
Well they refer to it as a LT1 there as well as my book on rebuilding the LT1.
10-11-2003, 02:21 PM
#6
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Join Date: Sep 2001
Location: Woodstown, NJ
Posts: 4,154
Well...
It says a version of the LT1, not that it is an LT1.
Also...a quote direct from HPBooks "How to Rebuild Small-Block Chevy LT-1/LT-4 Engines", by Mike Mavrigian:
"The late-model LT-1 and LT-4 small block Chevrolet engines are generically referred to as the 'second generation' small block (also referred to as SB2 or Gen II). Within the Gen II family, there are three basic configurations, including the 350 CID LT-1, the 350 CID LT-4 and the L99 265 CID. "
265 - There was only one block used for the 265 cid version of the LT1. It’s a 10168588 casting that had the numbers "4.3" cast on the side, too. It’s real easy to spot if the heads are off because of the small 3.74" bore.
Also...a quote direct from HPBooks "How to Rebuild Small-Block Chevy LT-1/LT-4 Engines", by Mike Mavrigian:
"The late-model LT-1 and LT-4 small block Chevrolet engines are generically referred to as the 'second generation' small block (also referred to as SB2 or Gen II). Within the Gen II family, there are three basic configurations, including the 350 CID LT-1, the 350 CID LT-4 and the L99 265 CID. "
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