Trick Flow Springs
Trick Flow Springs Good morning,
I have a set of assembled TFS 225 Heads for my 2005 GTO. I will be running the Tick Performance Polluter cam (LS2 Version) with these heads. My question, will these Springs Hold up with this cam? I've searched multiple forums and have not been able to find the answer to my question.
I have a set of assembled TFS 225 Heads for my 2005 GTO. I will be running the Tick Performance Polluter cam (LS2 Version) with these heads. My question, will these Springs Hold up with this cam? I've searched multiple forums and have not been able to find the answer to my question.
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Yes they're compatible. When I bought my old AFR heads they had AFR 8017's and Ti retainers. I purchased new BTR Platinum Spings (only) and stock locks and the titanium retainers were 100% compatible.
If you have the black lock chuck em. They wont allow the valves to turn and it's something you actually want to have happen.
If you have the black lock chuck em. They wont allow the valves to turn and it's something you actually want to have happen.
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Verdad Gallardo Yes they're compatible. When I bought my old AFR heads they had AFR 8017's and Ti retainers. I purchased new BTR Platinum Spings (only) and stock locks and the titanium retainers were 100% compatible.
If you have the black lock chuck em. They wont allow the valves to turn and it's something you actually want to have happen.
If you have the black lock chuck em. They wont allow the valves to turn and it's something you actually want to have happen.
http://www.trickflow.com/parts/tfs-16306-16
These LOOK OK but I'd like your opinion, Dr. Thank you!
I'd digress and say call Brian over at BTR. That's how I found out I'd be ok and only bought the springs from him.
Here's what he'll need
Inside Diameter of Outer Spring (in): 0.891 in.
Inside Diameter of Inner Spring (in): 0.675 in.
For your cam though, I'd IMAGINE you'd want at least 155#'s on the seat. Your cam card should specify. TurboBuick will disagree with me on this, as he has before, but I ALWAYS shim to within .050 of coil bind.
How to figure coil bind:
Your cam lift + .050 (clearance from coil bind) = "X" + the sping's coil bind = Optimal install height.
So let's take my old FTI HellRaiser cam.... .631 + .050 = .681 + 1.070 = 1.751
I installed my springs at 1.750 height.
You on the other hand with the Polluter v2 (LS2 version) and the TFS springs you have
We look at lift here - .635/.610 and you springs coil bind, which is 1.1
.635 + .050 = .685 + 1.1 = 1.785 install height for intake (need .015 shim)
.610 + .050 = .660 + 1.1 = 1.760 install height for intake (need .040 worth of shim)
This is considering your install height for those springs are 1.8 normally
I'd grab (8) .015 shims for under the intake valve seats, and throw (8) .030 shims under the exhaust valve seats. That'll put your install heaight for the exhaust valves at 1.77 which will give you .060 clearance from coil bind, which is still fine. Some people prefer to go with .060 since it gives you a bit better margin for error.
Did i answer your question? No, not really. Probably confused the **** out of you as well.... Just trying to share a bit of info with you, that's all.
They're TurboBuick's springs and I'm sure he can answer ANYTHING you need... or call Brian who's also a PAC distributor and he can tell you what will fit.
Here's what he'll need
Inside Diameter of Outer Spring (in): 0.891 in.
Inside Diameter of Inner Spring (in): 0.675 in.
For your cam though, I'd IMAGINE you'd want at least 155#'s on the seat. Your cam card should specify. TurboBuick will disagree with me on this, as he has before, but I ALWAYS shim to within .050 of coil bind.
How to figure coil bind:
Your cam lift + .050 (clearance from coil bind) = "X" + the sping's coil bind = Optimal install height.
So let's take my old FTI HellRaiser cam.... .631 + .050 = .681 + 1.070 = 1.751
I installed my springs at 1.750 height.
You on the other hand with the Polluter v2 (LS2 version) and the TFS springs you have
We look at lift here - .635/.610 and you springs coil bind, which is 1.1
.635 + .050 = .685 + 1.1 = 1.785 install height for intake (need .015 shim)
.610 + .050 = .660 + 1.1 = 1.760 install height for intake (need .040 worth of shim)
This is considering your install height for those springs are 1.8 normally
I'd grab (8) .015 shims for under the intake valve seats, and throw (8) .030 shims under the exhaust valve seats. That'll put your install heaight for the exhaust valves at 1.77 which will give you .060 clearance from coil bind, which is still fine. Some people prefer to go with .060 since it gives you a bit better margin for error.
Did i answer your question? No, not really. Probably confused the **** out of you as well.... Just trying to share a bit of info with you, that's all.
They're TurboBuick's springs and I'm sure he can answer ANYTHING you need... or call Brian who's also a PAC distributor and he can tell you what will fit.
Actually, being a Systems Engineer, I very much so appreciated the answer that you gave me. I do not have the data sheets for the cam, heads, and BTR Springs in front of me right now, but I'm sure we will be talking sometime soon. I've got a trip to White Sands Missile Range again, so I apologize of my responses are a little bit late.
I'll crunch the numbers and we can talk a little more. In the meantime, I'll probably give Brian a shout too. Having multiple knowledgeable sources is never a bad thing. Again, thank you for the enlightening response.
I'll crunch the numbers and we can talk a little more. In the meantime, I'll probably give Brian a shout too. Having multiple knowledgeable sources is never a bad thing. Again, thank you for the enlightening response.