ECS LS2 402 results
Thread Starter
On The Tree
Joined: Sep 2004
Posts: 175
Likes: 0
ECS LS2 402 results I briefly considered going FI after my original H/C 346 decided to blow a ring. I opted to stay N/A and ECS built me one heck of a LS2 based 402. The results below speak for themselves. Just so you know, this is a completely forged motor sporting redecked ETP 215 heads (can't remember the exact compression, but I use 93 pump gas, and the dyno was done with Shell 93 in the tank), a custom ground ECS cam (it's big), custom ECS SD tuning, Fast 90 intake/NW 90 TB, and Aussie single disc clutch, 1 7/8" American Racing Headers (thank you Carmen@Vette Drs) sans cats thru my stock Z06 Ti's and running 4.10 gears in the back. This was done this morning with ambient temps in the mid-upper 80's and it being semi humid out...no dyno tricks. In addition, the A/F is set a a fairly fat 12.2-12.4 throughout. I can say that with perhaps a different cat-back and with different gears I think they would have easily achieved 565+rwhp and 510+rwtq...but I'm not complaining. The drivability is very good, considering this cam is not for the faint of heart.
All in all, thanks to the entire Cream Ridge Crew...Chris, Doug, Marc, Mike, John and of course Christy for the hard work and effort put in.
All in all, thanks to the entire Cream Ridge Crew...Chris, Doug, Marc, Mike, John and of course Christy for the hard work and effort put in.
is this a solid roller??
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402
might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header.
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402
might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header. Thread Starter
On The Tree
Joined: Sep 2004
Posts: 175
Likes: 0
Originally Posted by 383ss
is this a solid roller??
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402 might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header.
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402
might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header.I'm not to concerned about the torque down low but more so the the power up top.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by 383ss
is this a solid roller??
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402 might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header.
I'm really wondering why they didn't stop the dyno 500rpm earlier.
damn nice numbers out of a 402
might be the highest peak that I've heard of. I don't know if you canre, but you would get more tq down low out of a 1 3/4 header.You are incorrect about the "increased low end torque" with 1 3/4 primaries. You are stuck in the past when small blocks made 300 hp. These engines make more horespower (move more air) than many big blocks and require larger primaries.
Originally Posted by ChucksZ06
You are incorrect about the "increased low end torque" with 1 3/4 primaries. You are stuck in the past when small blocks made 300 hp. These engines make more horespower (move more air) than many big blocks and require larger primaries.
I think you should run a 2" primary, then run it all through a 2.5" catback
Originally Posted by ChucksZ06
You are incorrect about the "increased low end torque" with 1 3/4 primaries. You are stuck in the past when small blocks made 300 hp. These engines make more horespower (move more air) than many big blocks and require larger primaries.
thats funny... I swapped from 1 3/4 to 1 7/8 with HVMC on my 408 and lost about 30rwtq at 4500 and even more at 2500 and lower.
it only gained hp from 5700 up
On The Tree
Joined: Apr 2004
Posts: 157
Likes: 0
From: Brampton, Ontario
Originally Posted by mike c.
wow,great #'s. i'm looking into a 402ci,i'll have to check that shop out. what does ECS stand for?
Even though their name insinuates their specialty in FI, they know how to build excellent N/A motors.
Just love my 447ci motor they built for me last year.
Congrats Geneus. That motor must sound & move like a bad@$$!
11 Second Club
Joined: Feb 2002
Posts: 639
Likes: 0
From: Norcal
Originally Posted by 383ss
thats funny... I swapped from 1 3/4 to 1 7/8 with HVMC on my 408 and lost about 30rwtq at 4500 and even more at 2500 and lower.
it only gained hp from 5700 up
it only gained hp from 5700 up
I should be able to do a apples to apples comparison on a 346. 1 7/8's qtp's hvmc which are on my car (white ws6 in sig) now. I just ordered some 1 3/4 qtp's w/ the hvmc. (they were on sale damn it!) I did get them for my gf's car( red car in sig) though, lol
