Will Trick Flow GenX 255 Valve Springs work with TSP VVT 3.2 Cam? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

John_C · 12-01-2017, 08:33 AM

Do you guys know if my Trick Flow GenX 255 Valve Springs work with TSP VVT 3.2 Cam?

I also have TSP 1.72:1 Roller Rockers: https://www.texas-speed.com/p-6147-t...oller-tip.aspx

The TFS heads have 448lb springs and Ti Retainers. https://www.trickflow.com/parts/tfs-3261t002-c01

My cam card:

xc_SS/RS · 12-01-2017, 12:24 PM

springs are good to .650" of lift so you might want to check with TSP about going to their .660" lift springs

John_C · 12-01-2017, 12:34 PM

Quote:

Originally Posted by xc_SS/RS

springs are good to .650" of lift so you might want to check with TSP about going to their .660" lift springs

I already have the TSP springs and Ti retainers that came in the TSP VVT 3.2 cam kit.

I was just hoping the springs and Ti retainers on the TFS heads would work so I wouldn't have to swap it all over.

Plus, not sure what valve locks those TFS valves have and if they work with the TSP Ti retainers.

Some pics...

xc_SS/RS · 12-01-2017, 01:43 PM

from the pics the locks look like the same ones that comes on LS heads, but I would switch the springs over if you were given parts to work with the cam you purchased.

Edit: I would call TSP since you are using 1.72 ratio rockers. Not sure how much more those increase the lift but I would definitely call them and ask

christianchevell · 12-02-2017, 09:10 AM

I would check with TSP and the heads maker Trick flow to see the specs the other springs you could save for 25k down the road when you may want to change them out as part of regular maintenance. You basically want spring well able to handle the lift of the cam comfortably, I do know you will want measure for your pushrods definitely as the geometry of the heads is a different angle than stock ls3 heads and TSP may not give correct info for the pushrod length needed.

The TSP rockers appear to maybe have a trunnion upgrade but if they are still needle bearing.?.and bushings are better I know I have to ditch my comp cams trunnions someday..... If your doing this yourself good luck, I have written up before on measuring preload and the correct amount with using the rocker ratio to calculate the amount to turn the bolt after zero being for you 1.72 x .047 thread pitch if the same as ls3 rocker bolts = .08084 for one complete turn compared to .077 for one turn on a ls3 1.7 rocker so you woul want to lean more to the 1/2 ish turn to get to the more golden area of .040-.060 lash many use more in the stock lower typewriter sound area..the more lash the louder and tighter....and don't go too tight as it hurts lifters heck the ls7 with its 7k rom limit is only .070 preload on the same lifters and 1.8 rockers and that's pretty much the max you want to go with plunger travel for the ls3/7 lifter....

Anyway that's my ramble, always check PTV and pushrods etc....... At least they are dual spring and not some toss away beehive springs not meant for squat. But the lift of that being .649 that's a lot and a .675 spring is needed most likely and it may be more than the specs for TFS heads....springs.... As you know.

Punisher_ATX · 12-04-2017, 09:53 AM

Change the springs. Our VVT3 cam has a .649 intake lift and id rather be safe and have some breathing room. You will need to change the seats and retainers as the ones we sent are spec'd for our PAC springs. And the Rockers do come with the upgraded sealed trunion set already.

John_C · 12-04-2017, 12:24 PM

Quote:

Originally Posted by Punisher_ATX

Change the springs. Our VVT3 cam has a .649 intake lift and id rather be safe and have some breathing room. You will need to change the seats and retainers as the ones we sent are spec'd for our PAC springs. And the Rockers do come with the upgraded sealed trunion set already.

From what I understand, the 1.72:1 TSP rockers with VVT 3.2 cam will actually give me .657 intake lift.

Are the 660 PAC's able to handle that?

Seems so close to the edge of the max those springs can handle...

Punisher_ATX · 12-04-2017, 01:17 PM

the PAC .660's are just fine. We tested them on our engine dyno with those rockers and that cam with zero issues. The PAC springs are a great spring man. PM me if you have any questions id be glad to help you out.

John_C · 12-04-2017, 03:49 PM

Quote:

Originally Posted by Punisher_ATX

the PAC .660's are just fine. We tested them on our engine dyno with those rockers and that cam with zero issues. The PAC springs are a great spring man. PM me if you have any questions id be glad to help you out.

Cool! Just wanted to be sure!

Synner · 12-04-2017, 06:07 PM

I wouldn't run a spring within .01 of its limit but with the 1.72 rocker you're definitely over .650. It's not a difficult swap, especially with the heads off.

Punisher_ATX · 12-05-2017, 09:25 AM

Let me know what you decide. If its too much of a concern you can send us the heads and we'll set the springs up for free you just pay shipping.

christianchevell · 12-05-2017, 05:43 PM

some people like a more responsive spring around the actual rate of lift and don't worry so much about coil bind/ valve float as if they know its a good spring it does handle it, and stiffer the spring the harder and worse on the valve train....

so its a balance I would be more into a .675 spring just for safeties sake, but the 660 in theory can be the near perfect spring for some wanting springs .
Most error is always better on the side of safety and most know that though and make sure the pick out a good spring and PAC are good as any out there they have been around for a long time. Maybe you could go a little higher if you want in spring.... I used to run a .639 lift cam with .675 prc. SO go with the PAC springs and swap them out you were provided and you may be able to sell the others online you remove....they would be good for someone with a milder lift. Springs are best changed out regular on high lift cams in the 25k range on a set to maintain things like no valve float or coil bind.....they get tired....

Punisher_ATX · 12-05-2017, 05:48 PM

Quote:

Originally Posted by christianchevell

some people like a more responsive spring around the actual rate of lift and don't worry so much about coil bind/ valve float as if they know its a good spring it does handle it, and stiffer the spring the harder and worse on the valve train....

so its a balance I would be more into a .675 spring just for safeties sake, but the 660 in theory can be the near perfect spring for some wanting springs .
Most error is always better on the side of safety and most know that though and make sure the pick out a good spring and PAC are good as any out there they have been around for a long time. Maybe you could go a little higher if you want in spring.... I used to run a .639 lift cam with .675 prc.

I confidently say hes fine as i had a .650 lift solid roller AND boost on my .660 pac springs for 18k miles shifting at 7500 and never had an issue.

John_C · 12-07-2017, 09:54 AM

Quote:

Originally Posted by Punisher_ATX

Let me know what you decide. If its too much of a concern you can send us the heads and we'll set the springs up for free you just pay shipping.

What would that shipping run round trip to you from 37138-4205?

12-01-2017, 08:33 AM	#1
John_C LSx FTW!!! Drives: 2010 Camaro 2SS RS Join Date: Jan 2017 Location: TN Posts: 767	Will Trick Flow GenX 255 Valve Springs work with TSP VVT 3.2 Cam? Do you guys know if my Trick Flow GenX 255 Valve Springs work with TSP VVT 3.2 Cam? I also have TSP 1.72:1 Roller Rockers: https://www.texas-speed.com/p-6147-t...oller-tip.aspx The TFS heads have 448lb springs and Ti Retainers. https://www.trickflow.com/parts/tfs-3261t002-c01 My cam card: Attached Images __________________ 2010 2SS RS A6 781rwhp on E85 Stage 2 ProCharger D1X Circle D 3400 Triple Disc Kooks Jet Hot Headers Kooks Full 3in exhaust Trick Flow GenX 255's Polished PAC .660's & Ti-retainers TSP VVT 3.2 cam kit w/DoD Delete Smith Bro's Trunnion kit AEM X-Series OBDII Widebands FIC ID1300x Injectors GM ZL1 High Output Fuel Pump DSX Tuning Flex Sensor DSX Auxiliary Fuel System Tim King Stage 4 Max Effort CTSV 6L90 DSS 1 piece aluminum driveshaft JRE 6L80E / 6L90E Dipstick NGK Iridium IX spark plugs #7 heat range Mighty Mouse Camaro 5 Wild w/-12an and Billet Black HP Tuners VCM Suite Last edited by John_C; 12-01-2017 at 09:50 AM.

12-01-2017, 12:24 PM	#2
xc_SS/RS Drives: 2010 Camaro SS/RS Join Date: Mar 2014 Location: somewhere in MD Posts: 4,883	springs are good to .650" of lift so you might want to check with TSP about going to their .660" lift springs __________________ 2010 2SS/RS Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53

12-01-2017, 01:43 PM	#4
xc_SS/RS Drives: 2010 Camaro SS/RS Join Date: Mar 2014 Location: somewhere in MD Posts: 4,883	from the pics the locks look like the same ones that comes on LS heads, but I would switch the springs over if you were given parts to work with the cam you purchased. Edit: I would call TSP since you are using 1.72 ratio rockers. Not sure how much more those increase the lift but I would definitely call them and ask __________________ 2010 2SS/RS Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53

12-02-2017, 09:10 AM	#5
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	I would check with TSP and the heads maker Trick flow to see the specs the other springs you could save for 25k down the road when you may want to change them out as part of regular maintenance. You basically want spring well able to handle the lift of the cam comfortably, I do know you will want measure for your pushrods definitely as the geometry of the heads is a different angle than stock ls3 heads and TSP may not give correct info for the pushrod length needed. The TSP rockers appear to maybe have a trunnion upgrade but if they are still needle bearing.?.and bushings are better I know I have to ditch my comp cams trunnions someday..... If your doing this yourself good luck, I have written up before on measuring preload and the correct amount with using the rocker ratio to calculate the amount to turn the bolt after zero being for you 1.72 x .047 thread pitch if the same as ls3 rocker bolts = .08084 for one complete turn compared to .077 for one turn on a ls3 1.7 rocker so you woul want to lean more to the 1/2 ish turn to get to the more golden area of .040-.060 lash many use more in the stock lower typewriter sound area..the more lash the louder and tighter....and don't go too tight as it hurts lifters heck the ls7 with its 7k rom limit is only .070 preload on the same lifters and 1.8 rockers and that's pretty much the max you want to go with plunger travel for the ls3/7 lifter.... Anyway that's my ramble, always check PTV and pushrods etc....... At least they are dual spring and not some toss away beehive springs not meant for squat. But the lift of that being .649 that's a lot and a .675 spring is needed most likely and it may be more than the specs for TFS heads....springs.... As you know. __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

12-05-2017, 05:43 PM	#12
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	some people like a more responsive spring around the actual rate of lift and don't worry so much about coil bind/ valve float as if they know its a good spring it does handle it, and stiffer the spring the harder and worse on the valve train.... so its a balance I would be more into a .675 spring just for safeties sake, but the 660 in theory can be the near perfect spring for some wanting springs . Most error is always better on the side of safety and most know that though and make sure the pick out a good spring and PAC are good as any out there they have been around for a long time. Maybe you could go a little higher if you want in spring.... I used to run a .639 lift cam with .675 prc. SO go with the PAC springs and swap them out you were provided and you may be able to sell the others online you remove....they would be good for someone with a milder lift. Springs are best changed out regular on high lift cams in the 25k range on a set to maintain things like no valve float or coil bind.....they get tired.... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

12-04-2017, 09:53 AM	#6
Punisher_ATX Drives: 2010 SS Join Date: Jun 2015 Location: Austin Posts: 439	Change the springs. Our VVT3 cam has a .649 intake lift and id rather be safe and have some breathing room. You will need to change the seats and retainers as the ones we sent are spec'd for our PAC springs. And the Rockers do come with the upgraded sealed trunion set already.

12-04-2017, 01:17 PM	#8
Punisher_ATX Drives: 2010 SS Join Date: Jun 2015 Location: Austin Posts: 439	the PAC .660's are just fine. We tested them on our engine dyno with those rockers and that cam with zero issues. The PAC springs are a great spring man. PM me if you have any questions id be glad to help you out.

12-04-2017, 06:07 PM	#10
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,544	I wouldn't run a spring within .01 of its limit but with the 1.72 rocker you're definitely over .650. It's not a difficult swap, especially with the heads off.

12-05-2017, 09:25 AM	#11
Punisher_ATX Drives: 2010 SS Join Date: Jun 2015 Location: Austin Posts: 439	Let me know what you decide. If its too much of a concern you can send us the heads and we'll set the springs up for free you just pay shipping.