Just finished the install on my LT1 in an 89 iroc. I never took the opti off but did put a new cam rockers lifters in the motor. The cam was installed by a mechanic I did the rest. My question is what sort of timing adjustments can be made or will the engine adjust that itself. I am having some backfiring out the intake. seemed to get a little better as I ran the car. Car doesnt seem to have much power either.

 

It times itself the distributor will b very self explanatory on how to install. He might have the Cam a tooth out though.

 

You either need to readjust the valves or the cam is off. The distributor is extremely hard to put on the wrong way and there is no advance/retard like on carb cars.

 

You have to take the opti off to put a cam in the car, the opti itself will only go on one way (unless it's a '93-'94 I've heard of the splined ones being put on wrong).

 

yea, I liked that comment too considering the opti sits in front of the timing cover and is driven by the camshaft.

May i suggest www.lt1pcmtuning.com and capture datalogs and have Solomon tune it for you. You can't be running an LT1 with a non stock cam without having the tune changed.

 

If the cam was a tooth off would that affect the oil pressure gauge?

I have tried a couple diff sendiing units now but cant get a reading. I know there is pressure otherwise the motor would be junk by now.

Thanks

 

No