385 LE2 Setup, 466rwhp 449rwtq
Thread Starter
Registered User
Joined: Jun 2003
Posts: 712
From: Amarillo Texas
lloyd- yes this is the set you just did for me
Sorry now A-B test with the cut out
The car did make as much power when it was 12.5-13.0. We know first hand that the dyno wideband was off a full point from the tail pipe , to a customers header wideband. So i'm still not sure on the exact a/f with seams like the motor likes more fuel.
Mahle -5cc pistons, -.003 block deck, felpro 1074's, heads have a 54cc chamber.
Dyno was a superflow
This is not my car, this is a friends 97 Z-28 that i build
The car made 460.8rwhp and 431.2 with a 13.0 a/f, but after that run a hint of anti freeze! after some plug inspection, i'm gona pull the heads and slap on some cometics
Sorry now A-B test with the cut out
The car did make as much power when it was 12.5-13.0. We know first hand that the dyno wideband was off a full point from the tail pipe , to a customers header wideband. So i'm still not sure on the exact a/f with seams like the motor likes more fuel.
Mahle -5cc pistons, -.003 block deck, felpro 1074's, heads have a 54cc chamber.
Dyno was a superflow
This is not my car, this is a friends 97 Z-28 that i build
The car made 460.8rwhp and 431.2 with a 13.0 a/f, but after that run a hint of anti freeze! after some plug inspection, i'm gona pull the heads and slap on some cometics
Last edited by roadtrip120; Apr 23, 2007 at 12:21 PM.
Registered User
Joined: Aug 2000
Posts: 586
From: Oklahoma City, OK
Registered User
Joined: Mar 2005
Posts: 439
From: Clovis, New Mexico
All I can say is wow Brady! You always manage to surprise me and make me want to go bigger! You just barely did my cam in Decenber and I already want bigger! Once I get me some LE2 heads I'll be giving you a call again. I now have to compete with my friend in town that has a 01 Z28 with an MS4 and 150 shot!
Ok maybe not compete but at least keep up!
Ok maybe not compete but at least keep up!
Thread Starter
Registered User
Joined: Jun 2003
Posts: 712
From: Amarillo Texas
Details
make sure everything is perfect, even if you didn't do something, machine work, double check everything. Make sure new parts work, lol.. A friend just got a new MSD opti and it **** out in less than a 1/4 mile , talk about pissed and money wasted.. Make sure all of the parts will work together, not miss matched , or something you just thought would work better together. Tune the **** out of it.
Good luck
Like i said look for my own personal 383 Le2 single plane numbers soon. 475+ would be nice
make sure everything is perfect, even if you didn't do something, machine work, double check everything. Make sure new parts work, lol.. A friend just got a new MSD opti and it **** out in less than a 1/4 mile , talk about pissed and money wasted.. Make sure all of the parts will work together, not miss matched , or something you just thought would work better together. Tune the **** out of it.
Good luck
Like i said look for my own personal 383 Le2 single plane numbers soon. 475+ would be nice
Registered User
Joined: Jul 2001
Posts: 752
From: Double Oak TX
Thanks Bret, Lloyd, Ion and Don
466rwhp 449rwtq
(A/F 10.5, 32* timing)
450rwhp with Ion mail order tune
385 LT1
11.9 compression
Eagle crank, eagle rods, Mahle pistons
Le2 Heads
BRE LE3 cam
LE ported intake
58mm , 42 svo's, under drive, K&N CAI, SLP 85mm MAF,
Pace Longtubes, y-pipe, open cut out
160 stat, electric water pump
OBD I conversion, Ion mail order tune, Dynoed tuned by myself
MSD wires, ngk tr55's, Gm opti
I'll post a graph tomorrow, need a scanner.
466rwhp 449rwtq
(A/F 10.5, 32* timing)450rwhp with Ion mail order tune
385 LT1
11.9 compression
Eagle crank, eagle rods, Mahle pistons
Le2 Heads
BRE LE3 cam
LE ported intake
58mm , 42 svo's, under drive, K&N CAI, SLP 85mm MAF,
Pace Longtubes, y-pipe, open cut out
160 stat, electric water pump
OBD I conversion, Ion mail order tune, Dynoed tuned by myself
MSD wires, ngk tr55's, Gm opti
I'll post a graph tomorrow, need a scanner.
Registered User
Joined: Jul 2001
Posts: 752
From: Double Oak TX
Hey, great job.
Registered User
Joined: Oct 2006
Posts: 746
From: Rochester Hills, MI
Bowling's Compression Ratio Calculator
Input Parameters Are the Following:
Cylinder head Volume (CC) = 54.00
Piston Top Volume (CC) = 5.00
Cylinder Bore (Inches) = 4.040
Cylinder Stroke (Inches) = 3.75
Deck Height (Inches) = 0.003
Head Gasket Thickness (Inches) = 0.039
Computation Results:
Computed Compression Ratio is 12.6 to 1
Thread Starter
Registered User
Joined: Jun 2003
Posts: 712
From: Amarillo Texas
Sorry couldn't remember all the numbers off memory, my heads were 54cc
56cc head chamber
4.04 Bore
3.75 Stroke
5.7 Rod
-.003 deck heith
6cc piston relief
.039 head gasket
12.32:1 static
9.48:1 dynamic
56cc head chamber
4.04 Bore
3.75 Stroke
5.7 Rod
-.003 deck heith
6cc piston relief
.039 head gasket
12.32:1 static
9.48:1 dynamic
Registered User
Joined: Oct 2006
Posts: 746
From: Rochester Hills, MI
Roadtrip, thanks for clarifying the CR. Makes sense now.
DCR # sounds a little too high to be accurate for those variables, too, considering my SCR is around 12.5 and Bret tells me I'll be well below 9.0 DCR with that cam & 6" rods. What are you using for IVC? Rod length?
DCR # sounds a little too high to be accurate for those variables, too, considering my SCR is around 12.5 and Bret tells me I'll be well below 9.0 DCR with that cam & 6" rods. What are you using for IVC? Rod length?