kevmor99: That "LT-1" term sure gets tossed around alot lately. Do you mean that you have a 350 SB? Or, do you have the geniune article? Factory original LT-1's are quite rare, and needless to say, very valuble. If you were to have a complete numbers matching specimin, from carb to pan, that is. All the engine components are different from a standard 350, including the block casting.
Std 350 had cast crank, cast pistons, std rods, std heads, low compression, cheap distributor, low performance water pump, and carb.
LT-1 had forged crank, forged pistons, pink rods,
high compression heads, either 461's, 492's, 292's, or variants. Many models had dual-point (factory Mallory) distributors. Early models had Holleys and about 1973 changed to Q-jet. Also had aluminum intakes, later years had aluminum heads.
All LT-1's have high compression ratio of 10.25 plus. Early 70's models were up to 11 to 1. The block casting was factory 4 bolt, as many 350's are, but this block was only used for the LT-1 and a few other "hot" 350's. The GM/casting numbers were used on no other model's of Chevrolet car/truck 350's, except the upper end of 350 performance engines like the 340HP, 350HP, 360HP, and the 370HP LT-1. The blocks were said to be of superior grade (higher tin-nickel content), giving better piston to cylinder wall lubricity, superior strength, and a more uniform cylinder wall thickness than standard 350 blocks.
Please post block casting number,and production code (on RH front), Head numbers, intake and exhaust numbers, and water pump number. Also carb numbers if you can. If you have it apart, also give cam, crank, pistons, rod numbers. I've got the books and will help you sort out the numbers and ID your parts. Have Fun!
Think Chevy!
:rolleyes: :p
