eamador11

Well, I had an unfortunate incident with my H/C Vette over the summer. After a nice spirited run, I began to hear the motor knocking like crazy. After pulling over I checked out the motor and found coolant in the oil. Not good! :ack:

I had the car towed to East Coast Supercharging. After a leak down test and boroscope, it was found that number 7 cylinder liner was cracked in two places and the piston was damaged. It was also later discovered that it bent an exhaust valve.

It was decided to replace it with a new LS3 complete bottom end. Matt@ECS sent my AFR 205 heads out to TEA (Total Engine Airflow) to have them open them up to a 4.06 bore, install bigger valves, new springs and hand port finish. Heads were also milled to 62cc. Since the heads were opened up nicely, I decided to upgrade the cam to the LG G5X1E. My previous cam was AFR 6016 224/228, .581 .588@114. Tommy put it all back together.

Doug performed his tuning on the road and then on the dyno. He also performed a speed density tune (no more MAF)

Final numbers were 496RWHP / 471 Torque!

I was real happy to hear their results. The car runs smooth at idle and just a very slight shimmy every now and then, just what I wanted. She drives super smooth around town and on the highway. I am still taking it easy for 500 miles for break in. I am real happy with it so far and I have to thank the guys at ECS for getting her back to me running strong! :thumbs:

Heres the dyno video on their Dynapak.

http://www.youtube.com/user/ECSRacin.../0/VjmTDdCYTyI

Dyno sheet:


Here are the engine specs:

ECS LS3 376ci
AFR 205s heads reworked for LS3 by Total Engine Airflow
PAC Dual Springs
LG Motorsports G5X1E cam
FAST 90/90 Mamo ported
Kooks 1 3/4 Headers w/ Random Tech high flow cats
Mototron 60lbs Injectors
Katech C5-R timing chain
ATI Super Damper
Mellings High Flow Oil pump
LS7 Lifters

1nasty86

iTrader: (63)

Nice gains!

yonerhottlt1

iTrader: (21)

Definitely nice numbers. Looks like the setup works very well together

GMRL

Love that torque curve! Now you got me rethinking my future plans for my 10 SS.
I like the looks of those new afr 215s.

eamador11

Yeah, I knew that LG executive cam pairs up nicely with AFRs from another member on here. The results still blew me away espectially with the torque and thats what you feel on the street.

eamador11

I think youll put down more power with the AFR 215s. I would have gone that route had I not known the 205s can be opened to a 4.00+ bore.