Rebuilding my Ls1?
#4
11 Second Club
iTrader: (88)
First off have the Block Honed & Vatted at the Machine Shop, with new Cam Bearings installed.
This is what I would do..
Stock Re-build:
Label each Rod & Cap to what # Cylinder it is
Get new Main and Rod Bearings
Polish Crank Journals, re-size Rods
Put new Rings on Pistons
New Oil Pump, preferably High Volume
New LS7 Lifters
New LS2 Timing Chain
New Head Gaskets
Mill Heads a little bit to ensure they are flat
Clean everything well
Upgraded Re-build:
Same as above, except add..
Forged Crank, Rods, and Pistons(if you want to go this far, might as well build you a Stroker)
Get it all Balanced by Machine Shop
Aftermarket Cam
Hardened Pushrods
Upgrade Valve Springs
That's a pretty good list..I'm sure someone else with have a couple to add..
This is what I would do..
Stock Re-build:
Label each Rod & Cap to what # Cylinder it is
Get new Main and Rod Bearings
Polish Crank Journals, re-size Rods
Put new Rings on Pistons
New Oil Pump, preferably High Volume
New LS7 Lifters
New LS2 Timing Chain
New Head Gaskets
Mill Heads a little bit to ensure they are flat
Clean everything well
Upgraded Re-build:
Same as above, except add..
Forged Crank, Rods, and Pistons(if you want to go this far, might as well build you a Stroker)
Get it all Balanced by Machine Shop
Aftermarket Cam
Hardened Pushrods
Upgrade Valve Springs
That's a pretty good list..I'm sure someone else with have a couple to add..
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#8
TECH Senior Member
iTrader: (5)
If 400-450 rwhp is going to be your final goal I would reuse your rotating assembly and get the block honed replace all the bearings (cam, crank, rods) New piston rings. Add a ported oil pump, Ls2 timing chain, new lifters and trays, Stick in a nice cam, get the heads cleaned up or get a head and cam pacage and reuse all your boltons.
#10
TECH Senior Member
iTrader: (5)
The ls1 in its stock form is prety tough. Alot of them have lived at 500rwhp for a long time. The reliability of forged internals realy shines with power adders. If your not looking for major power the stock internals will last 150k miles if taken care of. So for the original poster being on a budget and not wanting to go to crazy the stock internals will work just fine for a long time.
#11
we over looked the question of how much its actually gonna cost. ive got intentions of rebuilding my ls1 if my ship date isnt changed for basic, so im kinda wondering the same thing. my budget isnt too deep either.
#12
also can an ls1 be bored 30 over? i assume it would be ok, but from what ive read there is a sleeve in the cylinder walls, but idk the thickness of the factory sleeves. any thoughts here?
#16
ive only rebuilt sbc's. kind of unfamiliar with the ls1. with that said, just cut the ridge, hone the cylinder walls and leave it at that? or would there be much of a ridge to cut? 175k on the motor.
#17
TECH Senior Member
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Join Date: Aug 2007
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Im not machinist, but, I know there isnt much material there to take bc its a steel sleeve. If you take a good bit the first time and then later down the road there is any cylinder wall damage then your block is trashed. Its one of those cases where less is definitely more.