I'm sure this has been covered a million times but looking for a quick answer. Haven't found anything specific. Have a 99 Gsr all motor build with original motor. Li g story short block is in need of a rebuild. I have a spare rebuilt obd1 Gsr block. Can it be swapped right in to the obd2 head? Running Hidatsa s300 on chipped p28. Have s2000 oil pump and built head. I'm only concerned about the compatibility issues. I'm running the skunk2 pro 1s and am assuming I will be able to run them on a stock block with a retune, correct?

Thanks for your help!

 

pro 2 is too much for stock gsr block. it will bolt right up. idk if u will have a knock sensor cel or not but u can disable with your s300


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I'm using the pro1s sorry for mix up

 

Still a lot for a stock engine. Even with a Pro1

 

Why?

Maybe not for bone stock with stock air filter, stock IM, stock exhaust manifold, cat, and stock exhaust; it's not going to be as free-breathing. But still better, right? But if it has all the bolt-on goodies, it gonna rock, y0.

 

can anyone answer if i can use to obd1 block with obd2 chassis and head with my p28 ecu

 

Sorry, thought the thundercats, here, already helped you. :sigh:

Yes you can. The blocks are identical. You only need to use the OBDII oil pump and attached crank pickup and timing belt cover. See below for pic of oil pump with the CK sensor.