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I am curious, a 1992 engine is an LT1, the 1987 engine is the L98. What computer system are you using to run the engine? Did you swap over all the supporting parts to correctly install the LT1? (Cooling system, computer, wiring harness so forth and so on)?
The initial item that I would check would be to monitor the fuel pressure while driving the car and see what it does when you notice the problem. With that being said, since this is a engine swap it could be something less obvious so scanning the car may be necessary to see if timing or something else is going on. That is why I am asking about how the swap was performed.
The engine swap was done by Corvette Nutz a very knowledgeable shop re: corvettes so I am assuming everything was according to the way it was supposed to be.
The engine swap was done by Corvette Nutz a very knowledgeable shop re: corvettes so I am assuming everything was according to the way it was supposed to be.
In that case I would ask the shop that did the install to look at the issue, it would seem that they would have a vested interest in making sure you were happy with the conversion.
I would but they about fifty miles from me and unfortunately I am dis-abled and having a very hard time walking but the car is at a highly rated shop close to my house very knowledgeable and professional and they assure they will find the problem. Thank You so much for your input in this matter. "GOD" Bless