Chevrolet Lt1 Heads
The crankshaft in the lt1 is similar to a small block 350 crank and has the same casting number.
Chevrolet lt1 heads. It is the last production generation i small block from chevrolet. They use similar internals exhaust manifolds and oil pans. Gen ii lt1 angle plug aluminum reverse flow cooling 17568cc ports. Lt series gen ii small block chevrolet information the lt1 series gen ii small block chevrolet is very similar to the standard small block.
Chevy cylinder head identification small block casting numbers big block cylinder head camel back heads double hump heads. Only at gm high tech performance magazine. The stock lt1 cylinder heads move plenty of air on the intake side so much that they approach earlier chevy bow tie race heads even with a small 194 inch intake valve. 10185040 aluminum head 2nd version 45cc angle plug splayed valve 240cc port volume 10205245 350 93 gen ii 350 lt1 aluminum head reverse flow cooling 17568cc port volume 10207643 350 94 96 gen ii 350 lt1 aluminum head reverse flow cooling 10225121 350 94 95 corvette zr1 lt5 dohc 32v driver side.
General motors generation ii lt1 is a. Chevy 350 lt1 sbc info aluminum head 2 bolt main 57l this informative video will cover what i know about the lt1 motor engine. Pontiacchevy aluminum 91cc chamber large rectangle port. Gm claimed that the original lt1 aluminum head had a 15 increase in airflow as a result of revised port angles and higher port ceilings when compared to the 1991 l98 head.
Chevrolet performances fast burn 23 degree cylinder heads deliver maximum performance for small block engines. As such the l31 head is compatible with all older small blocks and is a very popular upgrade. I dont know everything and probably couldnt remember. The cylinder heads feature combustion chambers and intake ports very similar to those of the lt1 v8 but without the reverse flow cooling.
The main difference in the lt1 is the reverse cooling design which cools the cylinder heads first then the block. There were two heads used on the 350 one aluminum and one cast iron along with one cast iron head for the 265. Though the lt1 has a different block and heads than the earlier small block chevy v8 the engine mounts and bellhousing configuration were kept the same allowing the newer gen ii engine to be swapped into older vehicles.