I am thinking about getting a complete LQ4 at a junkyard for $600. I believe its a '00, was running motor, and it looks in good shape.
Is this a good platform to mod? I want to get the engine on a stand and build it up. It will be a long term project for a 98-02 fbody. And hopefully I want it to pass emissions.
I was thinking about LS6 intake, LS6 cam, P&P heads, 85 mm TB, 85 mm MAF, 42# injectors, hone the block, forged 4.000 crank, connecting rods, forged aluminum full dish pistons for a 9.0:1 compression ratio. And eventually...boost!
Casting number on the block: 12551364. I initially thought it was an LM7, but then I read the casting number. I haven't got a chance to read the head casting number yet.
I am looking into a 408 stroker kit. Summit has a few, Eagle kit is about $2600 for an all forged kit. Lunati kit is ~$4000.
I may just stick with the stock bottom end and only boost about 8-10 psi. I think I will be satisfied with that.
I picked up the motor today...I verified that its a complete 6.0 liter LQ4 with aluminum 317 heads...all for $500+taxes. I bought an engine stand, waiting on a buddy to borrow a cherry picker to get it off the truck. I'm excited to start the project.
__________________ I am kind of a big deal...people know me.
Dishing out reality checks, one person at a time...
I was thinking about LS6 intake, LS6 cam, P&P heads, 85 mm TB, 85 mm MAF, 42# injectors, hone the block, forged 4.000 crank, connecting rods, forged aluminum full dish pistons for a 9.0:1 compression ratio. And eventually...boost!
If your gonna be stroking out the motor, I'd run a larger cam than the LS6 cam. Raise the compression ratio while it's N/A so mill the LS6 heads down. Once you do go F/I then get 72cc chambered heads.
__________________ 2000 Z28:A4, Volant CAI, FAST 90/90, 42# inj, Patriot LS6 59cc heads, TR 232/236 .644/.597 112 LSA , dual valve springs, hardened pushrods, Comp LS2 timing set, SLP HD oil pump, SLP 25% UD Pulley, 160 t-stat, MSD wires, NGK TR6, Hooker LT Super Comp headers,true duals w/ X-pipe dynomax bullets dumped, TCI 3500 w/ trans cooler, Dana S60 4.10's, QA1's,!ABS !AIR, !ERG, TB bypass, SFC's, BMR Torque arm and tower brace. Weld Prostars. E-85, Nitrous Daves 2 stage wet plate kit. 150 shot.
I read a post about running a LS2 timing set, is that recommended with high output? Also saw a suggestion for a ported oil pump. Is it as simple as slightly enlarging and smoothing out the entrance and exit openings? Shim the relief spring?
__________________ I am kind of a big deal...people know me.
Dishing out reality checks, one person at a time...
LQ4 build up? 
