6.4L 388 ls3 dyno guesses?
#41
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Anyway I took it for a few mile drive, and made a 1/4 pass on a "closed road". Still having return to idle issues but darth is helping me get that worked out. Other than that, it cruises like stock even with 28's and 3.90's. Grab 6th and it chugs along at 60 mph like nothing has changed.
At WOT it's retarded. Handful on the street. I thought I was shortshifting it (because it was a new engine) but The logs showed I was shifting between 7500-7700. The powerband feels very broad and is boner inspiring. IMO this engine could easily swallow up more cam yet and still be relatively docile
At WOT it's retarded. Handful on the street. I thought I was shortshifting it (because it was a new engine) but The logs showed I was shifting between 7500-7700. The powerband feels very broad and is boner inspiring. IMO this engine could easily swallow up more cam yet and still be relatively docile
#43
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Originally Posted by Tuskyz28
383s get a bad Rep cause the guy don't know how to pick the correct heads and cam. Richard Holdnerer did one.... It produced 605hp at the crank using TEA heads and a 239 duration cam.
#44
I'll take you Young'ens back to Tony's old build 383. The hold point is getting the engine BUILT Correct and Having the Chassis Setup properly for what ever you do.
https://ls1tech.com/forums/dynamomet...-included.html
Or a basic as 346 that made over 510 rwhp Gotta build it Correctly is the whole point for the entire build not just the engine. If we're talking 1/4 mile or a drag setup,Corner carver...etc
https://ls1tech.com/forums/dynamomet...p-442rwtq.html
I also know of G. Good doing a set of Factory Ls6 heads on a smaller cubic inch stroker and it made power and was fast @ the track. Thing is: Being Properly Built and Setup. Or how about the guy with the Stang stock 6.0 370 with Ls3 heads running mid 9's with a hyd roller and pump gas N/a. It's all in the Details.
https://ls1tech.com/forums/dynamomet...-included.html
Or a basic as 346 that made over 510 rwhp Gotta build it Correctly is the whole point for the entire build not just the engine. If we're talking 1/4 mile or a drag setup,Corner carver...etc
https://ls1tech.com/forums/dynamomet...p-442rwtq.html
I also know of G. Good doing a set of Factory Ls6 heads on a smaller cubic inch stroker and it made power and was fast @ the track. Thing is: Being Properly Built and Setup. Or how about the guy with the Stang stock 6.0 370 with Ls3 heads running mid 9's with a hyd roller and pump gas N/a. It's all in the Details.
Last edited by Dark Energy; 04-02-2017 at 11:55 AM.
#46
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There's a guy who made almost 800 hp with a stock cube 6.2 and ported stock ls3 castings. I think it PEAKED around 8300. 12.5:1 compression. Likely not something you'd want to drive around though
#47
Yea: ERracing. I built my FRH stage1 heads off ER racing with a solid roller just a 408. Good Friend & Guy! Got Darin Morgan to build me a set of custom ProComp castings Ls7 heads too High compression for that setup. Buying parts this month for it along with other things needed. It's all about what your wanting and who you deal with in any build.
I can say this: **** gets Expensive and I'm not rich. No 401k to take out just Hard earned Cash. Looking back I would have just built a simple hyd roller 408 with 600+ at the flywheel. Not this Crazy **** I got now, I figure you only live once and I'd be left Wondering what if I had done it this way.
I can say this: **** gets Expensive and I'm not rich. No 401k to take out just Hard earned Cash. Looking back I would have just built a simple hyd roller 408 with 600+ at the flywheel. Not this Crazy **** I got now, I figure you only live once and I'd be left Wondering what if I had done it this way.
Last edited by Dark Energy; 04-02-2017 at 12:20 PM.
#48
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Thread Starter
Yea: ERracing. I built my FRH stage1 heads off ER racing with a solid roller just a 408. Good Friend & Guy! Got Darin Morgan to build me a set of custom ProComp castings Ls7 heads too High compression for that setup. Buying parts this month for it along with other things needed. It's all about what your wanting and who you deal with any build.
I can say this: **** gets Expensive and I'm not rich. No 401k to take out just Hard earned Cash.
I can say this: **** gets Expensive and I'm not rich. No 401k to take out just Hard earned Cash.
#49
The young who asked what will it make? Compare your build to Navy's build both are basically the same. Add or Subtract depending on Cam diff. and Compression around 10 to 25 maybe even 30 hp. Ported intakes and vacuum pumps also help boost numbers. I'm thinking 680 to 710 and I don't have the basic spec's for either build. I'll take a look kinda busy right now.
#50
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Thread Starter
The young who asked what will it make? Compare your build to Navy's build both are basically the same. Add or Subtract depending on Cam diff. and Compression around 10 to 25 maybe even 30 hp. Ported intakes and vacuum pumps also help boost numbers. I'm thinking 680 to 710 and I don't have the basic spec's for either build. I'll take a look kinda busy right now.
#51
My mistake it made 727 with the Carb style intake and 690 with the Fast intake Ok so.Here's what we have:
Navy's 396" Details and it made 690fwhp
GM LSX Iron Block, Bored & HOT Honed to 4.175"
Callies Magnum Crank 3.600" with small 1.88" Rod Journals
Callies Ultra Billet I Beam Rods 6.35" with small 1.88" Journal.
CP Pistons with a 2.5 CC Dome, 1.10 Comp Ht.
(11.7:1 Comp) with Cometic .051 Head Gaskets.
.9mm,.9mm,2.0mm rings.
TFS LS3 Heads MAMOFIED
LLSR Cam Motion Cam 243*/249* (large bore lifters add ~2*) HR ~ 237*/243*
115* LSA + 3* Advanced, .679"/.645" Lift.
T&D 1.7 Rockers (measured @ 1.72)
Isky Red Zone Lifters with Bushing, NO needle roller bearings!.
(MAMOFIED FAST LSX 102 with Mid Length Runners to be installed
for next Dyno & in car) (C5, 1999)
Dailey Engineering Dry Sump System.
AMSOIL, Assembly Lube,Break-In Oil, & DOMINATOR 10W/30 Racing Oil.
And here's what the owner of the thread has.
4.125" x 3.622 bottom end
11.3:1 compression
Mast medium bore ls3 heads
Cam motion LLSR cam, 239/253, .680 lift on a 112
Fast mid runner intake
2" TSP headers and 3" duals
I'm thinking at the flywheel you'd make 650 to 630. The dry-sump and ported intake are what helps make more hp. The couple of degrees on duration may add a little but the parts listed was the thing that helps. You should make over 550 rwhp with a manual.
Navy there's nothing like a pair of $1k lifters LOL! I used Morels same style lifter.
Navy's 396" Details and it made 690fwhp
GM LSX Iron Block, Bored & HOT Honed to 4.175"
Callies Magnum Crank 3.600" with small 1.88" Rod Journals
Callies Ultra Billet I Beam Rods 6.35" with small 1.88" Journal.
CP Pistons with a 2.5 CC Dome, 1.10 Comp Ht.
(11.7:1 Comp) with Cometic .051 Head Gaskets.
.9mm,.9mm,2.0mm rings.
TFS LS3 Heads MAMOFIED
LLSR Cam Motion Cam 243*/249* (large bore lifters add ~2*) HR ~ 237*/243*
115* LSA + 3* Advanced, .679"/.645" Lift.
T&D 1.7 Rockers (measured @ 1.72)
Isky Red Zone Lifters with Bushing, NO needle roller bearings!.
(MAMOFIED FAST LSX 102 with Mid Length Runners to be installed
for next Dyno & in car) (C5, 1999)
Dailey Engineering Dry Sump System.
AMSOIL, Assembly Lube,Break-In Oil, & DOMINATOR 10W/30 Racing Oil.
And here's what the owner of the thread has.
4.125" x 3.622 bottom end
11.3:1 compression
Mast medium bore ls3 heads
Cam motion LLSR cam, 239/253, .680 lift on a 112
Fast mid runner intake
2" TSP headers and 3" duals
I'm thinking at the flywheel you'd make 650 to 630. The dry-sump and ported intake are what helps make more hp. The couple of degrees on duration may add a little but the parts listed was the thing that helps. You should make over 550 rwhp with a manual.
Navy there's nothing like a pair of $1k lifters LOL! I used Morels same style lifter.
Last edited by Dark Energy; 04-02-2017 at 02:56 PM.
#54
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#55
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To quote the Late, Great, John Lingenfelter
"Great Cylinder Heads with a so so Cam
Will still produce good engine results,
So so Heads and a great cam will provide
So so Engine results."
I am NOT saying Hammers cam is so so by the
Way. Both of us have GREAT Cylinder Heads
Which on a 4.125" or larger Bore combined
With LLSR and the ability to spin 7500-8000
RPM provide phenomenal power over a
4000 RPM range. I would estimate
650-660 HP @ Crankshaft, 590-610 RWHP
Depending on driveline efficiency and the
Little details.
Enough Power for low 10s maybe top 9s
With suspension, tire, and practice.
"Great Cylinder Heads with a so so Cam
Will still produce good engine results,
So so Heads and a great cam will provide
So so Engine results."
I am NOT saying Hammers cam is so so by the
Way. Both of us have GREAT Cylinder Heads
Which on a 4.125" or larger Bore combined
With LLSR and the ability to spin 7500-8000
RPM provide phenomenal power over a
4000 RPM range. I would estimate
650-660 HP @ Crankshaft, 590-610 RWHP
Depending on driveline efficiency and the
Little details.
Enough Power for low 10s maybe top 9s
With suspension, tire, and practice.
#57
11 Second Club
Just checking things out on the calc it looks like more gear may be needed. Which of coarse are not exact. On that 28" tire, revving to 8000, it looks like 4th gear will pull to over 150mph. My guess is 135+mph in the 1/4. Smaller tires may help a bit but you may not want a smaller tire. Still. A new ball game.
#58
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Our Heads on a 4.125" Bore or larger with LLSR 239-247*Intake Dutation
With a + 6-14* Exhaust Split .650-.700" Lift (112-115LSAs) and the
FAST Mid-Length Runners will provide excellent results. On the larger end
Or bigger the short race runners will peak 600-800+ RPM Higher if you
Want to spin 8500-9000 RPM LOL (with 3.625" strokes) 4.00" strokes
Subtract 800-1000 ish RPMs for peaks.
Spit ballin with the strokers lol.
With a + 6-14* Exhaust Split .650-.700" Lift (112-115LSAs) and the
FAST Mid-Length Runners will provide excellent results. On the larger end
Or bigger the short race runners will peak 600-800+ RPM Higher if you
Want to spin 8500-9000 RPM LOL (with 3.625" strokes) 4.00" strokes
Subtract 800-1000 ish RPMs for peaks.
Spit ballin with the strokers lol.
Last edited by NAVYBLUE210; 04-02-2017 at 04:54 PM.
#59
10 Second Club
Thread Starter
To quote the Late, Great, John Lingenfelter
"Great Cylinder Heads with a so so Cam
Will still produce good engine results,
So so Heads and a great cam will provide
So so Engine results."
I am NOT saying Hammers cam is so so by the
Way. Both of us have GREAT Cylinder Heads
Which on a 4.125" or larger Bore combined
With LLSR and the ability to spin 7500-8000
RPM provide phenomenal power over a
4000 RPM range. I would estimate
650-660 HP @ Crankshaft, 590-610 RWHP
Depending on driveline efficiency and the
Little details.
Enough Power for low 10s maybe top 9s
With suspension, tire, and practice.
"Great Cylinder Heads with a so so Cam
Will still produce good engine results,
So so Heads and a great cam will provide
So so Engine results."
I am NOT saying Hammers cam is so so by the
Way. Both of us have GREAT Cylinder Heads
Which on a 4.125" or larger Bore combined
With LLSR and the ability to spin 7500-8000
RPM provide phenomenal power over a
4000 RPM range. I would estimate
650-660 HP @ Crankshaft, 590-610 RWHP
Depending on driveline efficiency and the
Little details.
Enough Power for low 10s maybe top 9s
With suspension, tire, and practice.
#60
10 Second Club
Thread Starter
Just checking things out on the calc it looks like more gear may be needed. Which of coarse are not exact. On that 28" tire, revving to 8000, it looks like 4th gear will pull to over 150mph. My guess is 135+mph in the 1/4. Smaller tires may help a bit but you may not want a smaller tire. Still. A new ball game.