GPI SS4 Custom VVT Grind on my car - Page 4 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

thahemp · 10-28-2013, 11:06 PM

Quote:

Originally Posted by thahemp

I can't find much on LS3 piston thickness. I found this quote from SpinMonster over on the corvette forums.

"The surface of the stock hypereutectic piston is at its thinnest section 220 thousandths. In most places its over .330” and some its .4”."

He seems to be the goto guy for fly cutting info/tools. So that's .220" near the ring lands, and a little more everywhere else. Are you thinking "a lot" as in... .080" or "a lot" as in .120"? I have seen that it is not recommended to cut any deeper than .1".

Congrats on the new times. That's getting to be pretty damn fast.

Nudge

thahemp · 10-29-2013, 09:50 PM

Quote:

Originally Posted by Rhino79

On the motor the cam is the only difference. Except I'm running colder plus for the spray. In negative da I think it will run a low 60 or high 10.50 with the posi right.

What do you think I can fit with .1" intake and exhaust reliefs? If I fly cut with a phaser gear that I can lock at full retard and cut, will that be helpful? What do i need to do to fit your SS4 cam into my motor?

Rhino79 · 10-30-2013, 12:23 AM

Put some l99 pistons in that beast! The oem valve reliefs are pretty deep for sure. I measured once, but cant remember the depth, I will measure next chance I get on a car. It would take as much as the factory depth is in the event it went 20* retard. Should never happen, but better safe than sorry.

RSCHRIS · 10-30-2013, 12:43 AM

sounds real good right thru idle .

thahemp · 10-30-2013, 09:39 AM

Quote:

Originally Posted by Rhino79

Put some l99 pistons in that beast! The oem valve reliefs are pretty deep for sure. I measured once, but cant remember the depth, I will measure next chance I get on a car. It would take as much as the factory depth is in the event it went 20* retard. Should never happen, but better safe than sorry.

I'll try to find someone that can measure them for me. There are several people doing builds right now that might have an old L99 piston laying around.

thahemp · 10-30-2013, 10:48 PM

Lethal racing was kind enough to measure for me today. The L99 exhaust eyebrow is .050" at its deepest for anyone else that was curious.

thahemp · 10-30-2013, 10:52 PM

So how about that SS4 cam rhino? You think I can get it in there with .080" on the exhaust and .040" on the intake?

Rhino79 · 10-30-2013, 11:23 PM

That is as tight as I would go.

thahemp · 10-30-2013, 11:50 PM

Then .1" on both. I guess if it doesn't fit it doesn't fit. But I'm sure we can come up with something good.

JEFF75645 · 11-03-2013, 10:39 AM

Hey Rhino send me some info on going back VVT and the SS4 cam. Muddflap kinda got me thinking yesterday.

Roader · 03-12-2019, 07:15 PM

As old as this thread is it’s fly cut.

10-30-2013, 10:48 PM	#48
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Lethal racing was kind enough to measure for me today. The L99 exhaust eyebrow is .050" at its deepest for anyone else that was curious. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

10-30-2013, 10:52 PM	#49
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	So how about that SS4 cam rhino? You think I can get it in there with .080" on the exhaust and .040" on the intake? __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

10-30-2013, 11:50 PM	#51
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Then .1" on both. I guess if it doesn't fit it doesn't fit. But I'm sure we can come up with something good. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

11-03-2013, 10:39 AM	#52
JEFF75645 Drives: his wife crazy buying mods Join Date: May 2012 Location: Gilmer, TX Posts: 1,342 View My Garage	Hey Rhino send me some info on going back VVT and the SS4 cam. Muddflap kinda got me thinking yesterday. __________________ Gone But Not Forgotten

10-30-2013, 12:23 AM	#45
Rhino79 Drives: 2010 Camaro SS L99/Auto Join Date: Jul 2011 Location: Cabot, AR Posts: 2,827 View My Garage	Put some l99 pistons in that beast! The oem valve reliefs are pretty deep for sure. I measured once, but cant remember the depth, I will measure next chance I get on a car. It would take as much as the factory depth is in the event it went 20* retard. Should never happen, but better safe than sorry.

10-30-2013, 12:43 AM	#46
RSCHRIS RSCHRIS Drives: 2010 Camaro SS/RS Join Date: Apr 2008 Location: Fort Worth, TX Posts: 41 View My Garage	sounds real good right thru idle .

10-30-2013, 11:23 PM	#50
Rhino79 Drives: 2010 Camaro SS L99/Auto Join Date: Jul 2011 Location: Cabot, AR Posts: 2,827 View My Garage	That is as tight as I would go.

03-12-2019, 07:15 PM	#53
Roader Drives: Camaro Join Date: Oct 2018 Location: Alabama Posts: 673	As old as this thread is it’s fly cut.