i just bought a 95 rivvy and it needs a new motor, i was reading up on riviera's and i have come to find out that the 1998 rivvy was supercharged but it was stocked with 240 horses, the rivvy i have is supercharged with 225 horses and i was wondering if i could buy a 98 rebuilt engine and bolt it in or would i have to make modifications ...?

also the supercharger on this car makes a noise not loud but if you have the ear you will notice it like it is dry does this mean that i need another or does this just mean it needs oil this is my first supercharger..

if it is just an oil problem what kind of oil do i put in it and suggestions or should i just go to pep boys and ask them...

one more thing are there any suggestions on performance modifications that might help me get more horsies.... thanx all.

Your 95 Riv engine is different from the 98 engine! It can be done but I believe the wiring harness are different. The computers are different! It all comes down to how much you want to spend for the extra 15HP. I don't think the price and time is worth the minor HP pickup.

Your supercharger has oil in it and should be changed , it is a special oil and you can buy it at any dealer(this way you get the right oil for the supercharger).