"Smog Legal" Forged 347, Lunati, Diamond - RESULTS
05-16-2011, 04:24 PM
#1
"Smog Legal" Forged 347, Lunati, Diamond - RESULTS Hoping to fire it up this coming weekend... Will throw OEM cats back on to keep the smog-***** happy after a dynotune.
Motor:
2001 LS1 block
Honed to a 347 (3.905" bore)
Clevite S & P series bearings throughought
ARP head studs & ARP main studs
Stock 3.622" iron crank (micro-polished & balanced)
Lunati LAE1 connecting rods
Diamond Racing -8.6cc pistons. Coated tops w/heat rejection coating, coated skirts with antifriction coating.
Stock 241 heads milled 0.045" (59cc?)
0.051" compressed MLS headgaskets
Patriot .660" lift dual springs
Stock rocker arms with COMP trunion bearing upgrade
Degreed cam on install
218/230 .605/.605 115+2 cam with XFI lobes
SLP oil pump/SLP double roller timing set
42# injectors
LS6 intake manifold
P&P stock throttle body
Stock MAF
JBA shorty headers
UPDATE: Used OEM cats, not gutted ones.
2.5" Bassani true duals
UPDATE: 7.4" COMP pushrods, not 7.325"
Driveline:
Stock 4L60E
BDR 2200ish stall 12" torque converter
OEM aluminum driveshaft
Stock 3 channel 10 bolt with 3.42 gears/torsen carrier
DRIVELINE UPDATE (for final results, guesses were for original driveline):
Built Xtreme Transmissions Stage 2 4L60E
Xtreme Transmissions 2800-3200 stall converter
Motor:
2001 LS1 block
Honed to a 347 (3.905" bore)
Clevite S & P series bearings throughought
ARP head studs & ARP main studs
Stock 3.622" iron crank (micro-polished & balanced)
Lunati LAE1 connecting rods
Diamond Racing -8.6cc pistons. Coated tops w/heat rejection coating, coated skirts with antifriction coating.
Stock 241 heads milled 0.045" (59cc?)
0.051" compressed MLS headgaskets
Patriot .660" lift dual springs
Stock rocker arms with COMP trunion bearing upgrade
Degreed cam on install
218/230 .605/.605 115+2 cam with XFI lobes
SLP oil pump/SLP double roller timing set
42# injectors
LS6 intake manifold
P&P stock throttle body
Stock MAF
JBA shorty headers
UPDATE: Used OEM cats, not gutted ones.
2.5" Bassani true duals
UPDATE: 7.4" COMP pushrods, not 7.325"
Driveline:
Stock 4L60E
BDR 2200ish stall 12" torque converter
OEM aluminum driveshaft
Stock 3 channel 10 bolt with 3.42 gears/torsen carrier
DRIVELINE UPDATE (for final results, guesses were for original driveline):
Built Xtreme Transmissions Stage 2 4L60E
Xtreme Transmissions 2800-3200 stall converter
Last edited by ZexGX; 03-22-2012 at 03:51 PM.
05-23-2011, 12:06 PM
#9
Got it running on Sunday. Runs very good. Tune is set to 22* of timing and pig-rich for safety. No detectable oil blowby whatsoever after the first initial startup "puff" even when following the GM factory new car engine/driveline break-in procedure. It's throwing two knock sensor codes and a MAF code (P0101, so it's on SD tables), regardless of the MAFs I tried (32k stock, or 92k descreened which was verified working). It's either a grounding issue or a tune issue (probably grounds/wires). Will be trying a few things tonight with the grounds. Sounds very healthy and idle vibration is way smoother than stock. Valvetrain noise stands out less than stock as well. The 42lb injectors are louder than the valvetrain. I guess that's a good thing. Rocker arms were torqued properly and 7.325" pushrods were used. Pulls just as hard as a stock LS1/T56 car through first and second. T56 car doesn't have 3rd or 4th so I couldn't do any testing through those gears.
Last edited by ZexGX; 05-23-2011 at 12:11 PM.
03-22-2012, 03:39 PM
#14
The results are in. It's lower than originally expected due to some changes in the setup. Put on stock cats for the dynotune, and a built 4L60E with a billet 3200 stall since it ate two stock 4L60Es in a row.
This is what it was before the build:
This is what it was before the build:
Last edited by ZexGX; 03-22-2012 at 04:11 PM.
