I'm looking at a Dual IC Procharger with 8lb pulleys, comes with a FMU and the computer tune to match.

Will this motor last? Car will not be a daily driver but how long will the bottom end/pistons last? I see people getting away with 6-7 psi non-intercooled so is an intercooled 8psi procharger safe for my stock internal LT1?

Thanks,
Andy

 

YMMV. Hard to say how long it will last, but don't expect OEM levels of reliability.

Rich

 

>I did this... I bought a spare LT1 block and had it bored and clearanced (for my 396) then when I could I had it rebuilt and installed when the stock engine let go.

 

Anything more than about 6#'s of boost on an LT1 and I would be looking to get more than just the small twin intercoolers that ATI gives you. This goes for stock OR a forged built bottom end.

I have seen where they can't keep up with 8#'s before. If anything I would just say go with a FMIC.

Either way you go, even intercooled you won't be able to safely run very much boost on a stock bottom end motor. This IMO defeats the whole purpose and isn't very cost effective seeing as how you will probably drop at least a few thousand in the blower alone, not to mention injectors and other misc. parts. And 5-7#'s of boost really won't gain you too much in the pig HP picture of things. It would be more cost effective power/money to go another route. Or if you are set on the blower idea then save up some more $ and get that bottom end built for it.

 

No one here can tell you how long your stuff will last. I've seen where some guys dont make it home from the dyno almost. I have been fortunate and mine has lasted over 2 years at over 8#. Plus, mine had about half the miles yours did(if its the car in the sig).

Who knows. You'll find out I guess.

 

not to steal the thread, but i was kind of wondering the same thing. I built my motor all forged, but for higher compression N/A. I'm not really that happy with the power levels and kind of want to go with a used supercharger kit or something if a deal pops up. my ring gaps are stockish and piston to wall is .004" sop i realize i can't go crazy, but i was thinking that i could at least run 8-10 psi on that setup, assuming i put on some larger 70cc afr headsto get compression down in the lower 9's. would my setup be safe?

 

I must be missing something, how did you end up with 11:1 CR with -12cc pistons and stock heads?

 

I put my blower on at 68000 miles it lasted 2 years with about 5000 miles on it, that was hard miles but every set up is diffrent and you have a lot more miles on yours. I was running 9 lbs of boost on mine single dual core intercooler, I went from a 13.7@102 MPH to a best of 12.26@ 115 MPH, my average time was around 12.4m if I would have got my gears and converter on the car before it blew I know I could have hit 11s.