427 engine, what to expect...... - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Jose · 09-17-2012, 08:36 PM

Quote:

Originally Posted by kevin1106

Something isn't right for sure.. I'm making 628rwhp with a 376.

Yes, that's what I have told him, a 427 with 13psi should be easy on the 700rwhp

BullF-16 · 09-17-2012, 08:42 PM

Quote:

Originally Posted by pouncer72

Please explain to the crowd how stroking an engine makes the sidewalls thin, I need my entertainment for the week

I think he was assuming a 4.0" crank with the extra bore/honing(4.125) to get to the 427 cubes. Sure a 4.125" crank wont comprimise anything.

I am no expert though

Whipped416 · 09-17-2012, 08:47 PM

thanks for the help there bull thats what i was saying ... just what Erik with hke told me when i wanted to go to a 427 with my original block..

BullF-16 · 09-17-2012, 08:49 PM

Quote:

Originally Posted by Whipped416

thanks for the help there bull thats what i was saying ... just what Erik with hke told me when i wanted to go to a 427 with my original block..

Yea, i know you're a boost guy and running the longer 4.125" crank is not too boost friendly. NA, no issues as far as i know. But again...what the heck do i know. Erik is supposed to deliver my motor either this week or next.

Unreal · 09-17-2012, 08:59 PM

Long crank lets the piston come way out of the bore so it may have issues.

Nothing wrong with a 427 and boost. I have a 427 with a Ysi, makes great power. The 2300 is a very small blower that much motor. Then again it should still be over 700hp.

Victory_bloodShed · 09-17-2012, 09:07 PM

Hi guys, I am the one with this problem :-(( ... I have TVS 2300, dual fuel pump, 85 injectors, cam not sure the lift and duration sorry but i can get it soon, 102mm throttle body maggie max plate, factory heads not ported but a nice set of valves and springs, calis push rods pistons and crankshaft, ATI super damper... Help!!!

BullF-16 · 09-17-2012, 09:18 PM

Quote:

Originally Posted by Victory_bloodShed

Hi guys, I am the one with this problem :-(( ... I have TVS 2300, dual fuel pump, 85 injectors, cam not sure the lift and duration sorry but i can get it soon, 102mm throttle body maggie max plate, factory heads not ported but a nice set of valves and springs, calis push rods pistons and crankshaft, ATI super damper... Help!!!

I assume based on your list of mods you also have decent headers/exhaust. sounds like it is breathing in well but what about the exhale? How is the tune? What AFR are you running?

jrpxxii · 09-17-2012, 09:21 PM

Quote:

Originally Posted by Victory_bloodShed

Hi guys, I am the one with this problem :-(( ... I have TVS 2300, dual fuel pump, 85 injectors, cam not sure the lift and duration sorry but i can get it soon, 102mm throttle body maggie max plate, factory heads not ported but a nice set of valves and springs, calis push rods pistons and crankshaft, ATI super damper... Help!!!

What's cr on motor?

pouncer72 · 09-17-2012, 10:37 PM

Quote:

Originally Posted by Whipped416

thanks for the help there bull thats what i was saying ... just what Erik with hke told me when i wanted to go to a 427 with my original block..

You cant bore an ls3 to 427 inches on a 4.0 crank, you'd be through the sleeve.

Stroking has zero to do with the bore of the engine.

FloMoCamaro · 09-17-2012, 11:05 PM

Quote:

Originally Posted by Jose

So, my friend just finished his 427 engine with a TVS2300. According to the dyno pull, it's making 13psi and 621rwhp and 598torq. We think that the numbers are way low. What do you guys think? We need some feedback before going back to the original setup expectations.

Thanks!!!

Here is a link to another thread of an ADM Performance 1000HP 427 / Maggie Build: http://www.camaro5.com/forums/showth...hlight=cassill

Pro Stock John · 09-17-2012, 11:11 PM

Need all the specs and deets before speculating.

One simple rule to use is that 15 psi is effectively double the air. So a 400rwhp engine + 15 psi could in a simple way make 400 x 2 = 800rwhp.

620rwhp sounds a bit low but maybe it's the pulley combo, maybe it's the cam, maybe a loose converter, compression, could be a lot of things.

lakers67 · 09-17-2012, 11:27 PM

It says he has an ATI Dampner! Wouldn't that actually slow the blower down?

TinyToasta · 09-18-2012, 01:24 AM

Check the cr of the Engine... With e.g. 9 to 9.5 it's not gonna make a great deal of power at such 'low' boost, I guess....

Padre · 09-18-2012, 06:54 AM

What kind of dyno?

Padre

09-17-2012, 08:59 PM	#19
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Long crank lets the piston come way out of the bore so it may have issues. Nothing wrong with a 427 and boost. I have a 427 with a Ysi, makes great power. The 2300 is a very small blower that much motor. Then again it should still be over 700hp. __________________ Nick Corvette Z06 -1200ish rwhp

09-17-2012, 11:11 PM	#25
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	Need all the specs and deets before speculating. One simple rule to use is that 15 psi is effectively double the air. So a 400rwhp engine + 15 psi could in a simple way make 400 x 2 = 800rwhp. 620rwhp sounds a bit low but maybe it's the pulley combo, maybe it's the cam, maybe a loose converter, compression, could be a lot of things. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

09-17-2012, 11:27 PM	#26
lakers67 Drives: Camaro 2SS Join Date: Jan 2010 Location: NJ Posts: 321	It says he has an ATI Dampner! Wouldn't that actually slow the blower down? __________________ 2SS, L99 to LS3 Conversion, Ported Heads, JRE Rough Idle Cam, MagnaCharger, ID850, 3.4 pulley, SCT, JRE tuned, Kooks 1 7/8 Headers, Magnaflow Exhaust, ADM Race CAI, Vmax TB, 3.70 AAM Gears, Dual Fuel Pump, BMR/Pfadt bushings and suspension,

09-18-2012, 01:24 AM	#27
TinyToasta Drives: way too fast.... Join Date: May 2010 Location: Germany Posts: 297 View My Garage	Check the cr of the Engine... With e.g. 9 to 9.5 it's not gonna make a great deal of power at such 'low' boost, I guess.... __________________ custom build forged LSA, 379ci, TVS2300@15psi, 696rwhp/688ft-lbs, built by DH Individual, Customkingz, tuned by Jannetty Racing JRE rough idle cam, JRE ported lower intake manifold, OD cog drive, 6% OD crank pulley, ported ls3 heads, NW102mm TB, 1/2'' RDS spacer, IW 8-rib drive Pfadt Cradle Bushings, Arms & Rods, Pedders Supercar w/FE4 conversion, ZL1 sways, HE Twin Carbon Street Slayer, ZL1 Rear End (3.73) CTS-V Brake upgrade, Street: 22'' Vossen CV1, Strip: 18'' Forgestar F14 on MT Street Radials

09-18-2012, 06:54 AM	#28
Padre Only drives on Sundays Drives: '16 2SS A8 NPP MRC NGray Join Date: Feb 2011 Location: Dalton, GA Posts: 2,500 View My Garage	What kind of dyno? Padre __________________ OLD HOTNESS: The "Heretic": '11 2SS/RS L99 A6 Black/Inferno. Build Journal, Videos D1SC GT9 JBA-LT = 720/680 \| 10.330 @ 133.61, 1.546 sixty... Camaro King at ECS V, Darlington. NEW HOTNESS: '16 2SS A8 NPP MRC. Bone Stock, 1/8th: 8.051 @ 89.44, 1.919

09-17-2012, 08:47 PM	#17
Whipped416 Drives: 2010 CAMARO SS Join Date: Mar 2011 Location: Texas Posts: 1,515 View My Garage	thanks for the help there bull thats what i was saying ... just what Erik with hke told me when i wanted to go to a 427 with my original block..

09-17-2012, 09:07 PM	#20
Victory_bloodShed Drives: 2011 Camaro Join Date: Mar 2011 Location: Alabama Posts: 61	Hi guys, I am the one with this problem :-(( ... I have TVS 2300, dual fuel pump, 85 injectors, cam not sure the lift and duration sorry but i can get it soon, 102mm throttle body maggie max plate, factory heads not ported but a nice set of valves and springs, calis push rods pistons and crankshaft, ATI super damper... Help!!!