[WildBillyT]

Originally Posted by BluMaj24

Now the LS1 requires more custom stuff for mounting and such...Engine mounts, reloaction bracket, etc...that's still easier?

From what I understand, the LS1's aluminum is lighter and quicker stock, but LT1 can be faster modded and is a little tougher because it's Iron. At some point the motor may be blown and/or sprayed...but not immidiately.

My planning is to basically build the motor/trans from the get-go and hopefully not have to tear it apart again (Given all holds up...but since when does a track day goes by when you don't break something, lol). At the start, lookin for 11's all motor/bolt on.

For the 87 IROC, this is what I'm thinking of at the moment...
Engine: LT1 bored .60over made to 408 or LS1 bored .30over
Trans: TH400 w/ High Stall TC most likely, maybe T56 manual but it depends how much power.
Rear: Moser 9"
Gears: 4.10's
Heads: Stg 2/3 Aluminum heads
Cam: (not specific on the Cam yet, mild-high)
Pistons: Forged Pistons
Exhaust: True Duals
Headers: Hooker/Pace - again, not specific as of yet.
Intake: Not sure what hooks to LT1, but was looking at LS6 intake if LS1 motor.
Ignition: MSD Ignition

Like I said, I want to do it right from the begining so any input would be greatly appreciated. This is going to be a long project...starting with motor then working outward. My plan is to buy everything at once when I save all the money, but I'm sure deals will arise and I'll buy parts along the way...but not buying a single part until I determine which motor.

If you don't already know, .060 over in an LT1 won't give you a 408. Also, most LT1s were two bolt main motors- I'd convert it to a 4 bolt if you are going for serious power.