LT1 Dyno Archive
After a cai, underdrive, tb bypass and tb foil, PCMforless tune i was 303/341 and ran 13.2@103 with a 2.01 60'
Now i have same bolt ons with LT headers and borla with cutout and i went slower at the track?!? WTF


95' lt1 brand new GM perf. trans. 3,600 stall, Factory lt1 short block port and polished heads match ported to a ported intake manifold, thats also match ported to 58mm BBk, huge front mount, 3 inch tubing, turbonetics turb, msd ignition, ( 6AL, coil, and BTM) 44lbs injectors, traction bars,...and a jegs sticker


95' lt1 brand new GM perf. trans. 3,600 stall, Factory lt1 short block port and polished heads match ported to a ported intake manifold, thats also match ported to 58mm BBk, huge front mount, 3 inch tubing, turbonetics turb, msd ignition, ( 6AL, coil, and BTM) 44lbs injectors, traction bars,...and a jegs sticker
The Best V8 Stories One Small Block at Time
529 RWHP/505 RWTQ
naturally aspirated 383 ci LT1 12:1 CR, 227's, solid roller cam, shaft rockers, single plane, accufab TB, TH400, 4500 stall, 9" Moser rear, 325/50/15 MT DR's on 15" bogarts. FAST XFI standalone, 50lb injectors, 10AN feed, 6AN return Nasty performance sumped tank with Weldon 600A
Stock intake
Stock heads
Intake and heads port matched and polished
SCAT 4340 Forged Crank
SCAT 6" H Beam Rods
JE Forged 170817 Pistons - ~9.5.1 compression
Total Seal rings
Comp Cams 576/570, 230/236, 113 lsa
Comp springs
Comp Cams lifters
Canton pan
Summit 58mm throttle body
Melling MEL-10552C
Pacesetter LT headers
Magnaflow Hi Flow Cats (converted to duals)
Dynomax muffler
ATI 600B at 6lbs (that is ALL this SC will make with this set up....fyi)

I added a graph as an attachment that compares my stock 350 LT1 to the 383 I built with the same supercharger at the same boost level.
449RWHP and 468 RWTQ.
Last edited by real82it; May 4, 2008 at 03:55 PM.
1000ft-11.42 @ 93
1/8th-8.98 @ 81
How does that sound with my mods...
K&N CAI, Elbow and a Magnaflow catback...
Max Horsepower............... 275.76 @ 5300 RPM
Max Torque..................... 316.85 @ 3200 RPM
mods at the time were
-K&N CAI
-SLP TB air foil
-SLP manual fan switch
-GM 1LE elbow
-SPEC stage 2
-18X8.5 wheels
593 RWT
Numbers are before the tune, and before the proper injectors and new trans were in (the old one was slipping) and before the new throttle body went it.
12 bolt rear,3.73 gear,17in C5 rims, 275 BFG TA Drags, 462 lift long duration cam, new lifters rockers pushrods, CAI, BBK Short tube headers, Muffler delete, Polished throttle body, 32lb injectors, New spark plugs, 3 1/2in aluminum driveshaft, vigilante torque converter, new trans with shift kit (out of 96 automatic) Procharger at 9psi---other small mods
380rwhp and cant find the dyno sheet to get the torque
I have 3.42 gears, 2800 vig stall, asp underdrive, 30 svos, jet tuning, magnaflo catback, 52mm bbk tb,CAI,
have CC305,1.6 rockers,Mac mids,no cat and as said my head choices are LE2 or AFR 180 elminators. So anyone got something close to this? Wondering if can hit 360 rwhp with the above mods.
1.63 60ft
93 TA stock heads and bottom end.
1.6 RR
BBK 58mm TB
Vortech supercharger intercooled 8-9 lbs (dyno'd 419 w/6lbs)
Vigilante 2800 stall
3.73 12 bolt
Hooker long tubes
Borla cat back
probably missing something
MODS:totally stock...it is pretty much bad *** lol. mods will come soon. I see all of these numbers on here and I was wondering how much rwhp an lt1 fbody has to begin with. I know what it is at the crank....but in order to see the gains I was hoping you guys could enlighten me. I do at least have newer rims on my car(my one mod), that has gotta be at least another 15-17 ponies lol...oh, i forgot, that only works for ricers.
The computer hasn't been done yet but I'm not gonna do it until next winter when I put the heads on it. Any guesses what a computer tune would do.

