W2w,tea,edc,408,a4,9"
Thread Starter
8 Second Club
iTrader: (26)
Joined: Nov 2002
Posts: 2,644
Likes: 3
From: mansfield ohio
W2w,tea,edc,408,a4,9" This engine was done at W2W big thanks to Kurt! 
LME did my first 408,,, but we wont go there.
These heads were done by TEA 2.5 years ago and IMHO really perform Thanks Brian.
Setup: this was setup for a 300 nitrous shot
Iron 408, lunati crank and pro billet rods. JE pistons -5 relief. Hellfire rings. Morel lifters. Jessel rockers, manley dual springs, AFR casting TEA stage 3 heads 2.08/1.6
EDC cam 246/254 .646/.644 113 LSA 108 ICL
11.5 static 8.4 dynamic compression.
1 7/8X 2” Kooks stepped headers.
HPTuners SD tuned by me.
Fast 90/90 ported by me with NW TB
Converter was locked. This was with my 17x11 TT2 wheels. A/F was 12.7 to 12.4 29degrees of timing. Im running about 30% E-85 mixed with pump gas premium. Car runs great on pump gas but I want the extra octane because this is a nitrous car.
523 hp at 6200 476 TQ at 5300
While I am very pleased with the numbers I would like input as to why it’s dropping off after 6700.
Possible car/setup issues
Valve springs only have 140# on the seat, valve float?
Headers have 3.5” collectors. I have a 3” Y pipe that’s hooked up to a magnaflow catback with a single 3” cutout. Thinking I need 3.5 Y pipe to a 4” I pipe with a cutout.
Fast 90/90 not flowing
LME did my first 408,,, but we wont go there. These heads were done by TEA 2.5 years ago and IMHO really perform Thanks Brian.
Setup: this was setup for a 300 nitrous shot
Iron 408, lunati crank and pro billet rods. JE pistons -5 relief. Hellfire rings. Morel lifters. Jessel rockers, manley dual springs, AFR casting TEA stage 3 heads 2.08/1.6
EDC cam 246/254 .646/.644 113 LSA 108 ICL
11.5 static 8.4 dynamic compression.
1 7/8X 2” Kooks stepped headers.
HPTuners SD tuned by me.
Fast 90/90 ported by me with NW TB
Converter was locked. This was with my 17x11 TT2 wheels. A/F was 12.7 to 12.4 29degrees of timing. Im running about 30% E-85 mixed with pump gas premium. Car runs great on pump gas but I want the extra octane because this is a nitrous car.
523 hp at 6200 476 TQ at 5300
While I am very pleased with the numbers I would like input as to why it’s dropping off after 6700.
Possible car/setup issues
Valve springs only have 140# on the seat, valve float?
Headers have 3.5” collectors. I have a 3” Y pipe that’s hooked up to a magnaflow catback with a single 3” cutout. Thinking I need 3.5 Y pipe to a 4” I pipe with a cutout.
Fast 90/90 not flowing
Last edited by koolrayz; Jul 15, 2007 at 08:28 PM.
Thread Starter
8 Second Club
iTrader: (26)
Joined: Nov 2002
Posts: 2,644
Likes: 3
From: mansfield ohio
Intake was ported by me. Matched it at the intake ports. Opened it up alot at the TB opening and where the runners start on the bottom part. Didnt really do much with the runners themselves.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Your curve looks good, however I would bet that the power would drop off more slowly (carry further) with a larger 4" intermediate pipe. 3" is really small for all that HP.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
