I had an engine rebuilt buy a small, but highly regarded, engine builder in my area and I told him the application that I would be using it in and asked him to build it accordingly. Its going in my 91rs with a T5. I am retaining the TBI system. I am doing all the Ultimate TBI mods along with different injectors to support the engine. My question comes in with the cam. It came from Cranes (I am aware they went under) PowerMax series, part number 114122. I am using 1.5:1 rockers. If there are any numbers I ommited that may be crucial let me know and I will find them.

LIFT (at valve)
intake. .423
exhaust .446

DURATION
intake 264
exhaust 274

How streetable will this engine be? I plan on tuning it in but how well will it run on the stock LO5 tune. Is there a different tune that I should be using as a start? I am aware the questions on the tune belong on another board but figured I would see how many questions I can get answered at once. Thanks in advance.

 

That cam pulls good vacuum, your GM tune should like that.