jmm98LS1

iTrader: (28)

Got ~25 miles on the new motor, shot a quick clip pulling into the garage after her first bath in 8 months. Idle is set to 1100rpm.

00Formula00

iTrader: (6)

stupid tight, i fell in love..

MikeG

iTrader: (33)

That sounds awesome man.

stumprrp

iTrader: (2)

rediculous sound! 240ish cam?

jmm98LS1

iTrader: (28)

24x/25x

JFM-jr

iTrader: (23)

She sounds effing mean bro

dre2013

iTrader: (7)

well, there goes another pair of boxers.

outkast6991

iTrader: (34)

car sounds really good man. care to share any details on the build such as who built it, how much you have into it, and parts used? i'm thinking of starting a 370 build so any info would be cool

PREDATOR-Z

Popcorn anyone?

Sweeeeet

blue by you

iTrader: (5)

Wow! That sounds pretty mean. What are you running for exhaust/mufflers?

bjamick

iTrader: (31)

Sounds sweet man, kinda wish I would've went the 370 route !!

jmm98LS1

iTrader: (28)

Guess I did kinda leave everyone hangin there, my bad. I built the motor, a local shop did the machine work. I have about $5k in the motor. Specs are:
-'99 LQ4 block
-LS6 crank
-Scat I-beam 6.125" rods, ARP hardware
-Mahle forged/coated 4.030" pistons, 4cc reliefs
-Clevite coated main/rod bearings
-custom cam
-PRC 5.3 stg 2.5 heads milled to 57cc, mild hand cleanup work done, LS2 MLS gasket
-7.375" chromoly pushrods, stock rockers
-ported fast 92, PTM 92mm throttlebody
-custom DP nitrous system
-pacesetter headers, 3" duals w/flowmaster 1 chambers

Notable clearances/measurements:
mains- .002"-.0025"
rods- .002"-.0025"
rod side clearance- .023"
crankshaft endplay- .005"
deck height- .013" above deck
ring gaps- .024" top, .028" second
compression- 12:1 SCR, 8.7:1 DCR

Car has built t56, spec 3 clutch, strange 3" chromoly shaft, moser 9" w/4.30's, wolfe 6pt etc etc. Haven't had it to the scales yet, but it's gotta be one heavy bitch. Here's a couple pics:

Jwright41

iTrader: (2)

Any numbers on that bad boy? I have been researching to do a 370 build for 3 months now. Will be more of a weekend car, little track time here and there.

elias_799

iTrader: (8)

why did you use the ls6 crank over the lq4 ? is it stronger or something.

jmm98LS1

iTrader: (28)

The '99-'00 LQ4 motors had a thicker rear crankshaft flange to mate up with the 4l80e.....can't use a 4l60e or t56 with them so that's why I switched cranks.

Not yet, just fired for the first time on Monday. Going to get some break-in miles on it and some street tuning done, then head to dyno and track.

Jwright41

iTrader: (2)

Keep me posted. Dying to see what that thing makes. Engine looks sick and sounds AWESOME!!!