looking at a lt4 timing chain and gears off a lt4 crate motor it has every thing but the water pump gear are the lt1 tha same as a lt4 it has the chain, crankshaft sprocket, camshaft sprocket but no water pump gear thank you for reading this do I still need a lt4 water pump gear or will my lt1 work thanks

 

I used the stock LT1 water pump gear. No problems yet after about 30k.

 

Yeah, the stock LT1 water pump drive gear will work fine.

 

Yeah the only difference is the fact that the lt-4 timing chain sprockets are made of steel for stronger applications as to where the cheaper ones are usually made of iron. The iron ones are usually good up to around 400 horses after that its usually time to upgrade. Also there are some timing degree change possibilities on the lt-4 kits which i really dont understand ive changed mine out with factory gm kit and never had to adjust because everything goes on one way

 

Actually, the stock LT1 timing set is "powdered metal". From the LT4 vs LT1 comparison:
(copy and past link - it won't connect otherwise)

The LT4 timing set should not be confused with the LT4 Extreme Duty timing set, which is yet another design.