GTP LS6 heads have arrived! (pics inside)
06-20-2003, 07:44 PM
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GTP LS6 heads have arrived! (pics inside) It was a pleasant surprise this week to finally get my heads back from GTP. These are LS6 castings ported by Craig @ GTP for my solid roller 346ci setup. I was using GTP 5.3l heads the last time around and thought it was time to step up to the LS6 heads. Here is some info on the heads:
- GTP stage 2+++ porting
- Ferrea titanium 2.055/1.57 valves (The intake valves weigh 77.4g, while the exh. valve comes in at 69.9g; this is compared to 120.0g/95.9g for a equivilant stainless valve.
)
- Copper Beryllium valveseats for use with the titanium valves
- Poly-Dyn coated combustion chambers, valve faces, and exhaust ports
- Custom 5/16" valveguides
Some pics:
Intake port
Coated exhaust port
Coated titanium valves
Copper Berryllim seats and coated combustion chambers
5/16" custom guides
I am waiting on custom domed pistons from Chris@Diamond. I am going to have them coated as well at Poly-Dyn. Once they come in, the rotating assembly needs to be rebalanced and the block align bored/honed since I'll be adding billet main caps with ARP main studs. I'm also going to a larger cam, higher ratio T&D rockers, a new valvespring/retainer setup, a set of Kooks 1 3/4 - 1 7/8 stepped header when the motor goes in, and a few other misc. things.
It is going to be a month or two before that all gets done, but I'm glad the heads showed up already. They are normally the thing I am always waiting on. lol
Jason
- GTP stage 2+++ porting
- Ferrea titanium 2.055/1.57 valves (The intake valves weigh 77.4g, while the exh. valve comes in at 69.9g; this is compared to 120.0g/95.9g for a equivilant stainless valve.
)- Copper Beryllium valveseats for use with the titanium valves
- Poly-Dyn coated combustion chambers, valve faces, and exhaust ports
- Custom 5/16" valveguides
Some pics:
Intake port
Coated exhaust port
Coated titanium valves
Copper Berryllim seats and coated combustion chambers
5/16" custom guides
I am waiting on custom domed pistons from Chris@Diamond. I am going to have them coated as well at Poly-Dyn. Once they come in, the rotating assembly needs to be rebalanced and the block align bored/honed since I'll be adding billet main caps with ARP main studs. I'm also going to a larger cam, higher ratio T&D rockers, a new valvespring/retainer setup, a set of Kooks 1 3/4 - 1 7/8 stepped header when the motor goes in, and a few other misc. things.
It is going to be a month or two before that all gets done, but I'm glad the heads showed up already. They are normally the thing I am always waiting on. lolJason
06-20-2003, 08:17 PM
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Re: GTP LS6 heads have arrived! (pics inside) Wow, they look like a good set of heads...Wonder what kind of power youll be putting out! Keep us posted on dyno numbers and track times!
06-20-2003, 09:11 PM
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Re: GTP LS6 heads have arrived! (pics inside) Hey! I need a set of those! Gimme gimme gimme!
Can't wait to see your car back in action again.
Congrats.
-Andrew
Gimme gimme gimme!Can't wait to see your car back in action again.
Congrats.
-Andrew
06-20-2003, 09:34 PM
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Re: GTP LS6 heads have arrived! (pics inside) Thanks guys! They flowed 305cfm on the intake and 215cfm on the exhaust. Not much more peak cfm than my last set of 5.3l, but I did pick up some mid-lift cfm on the intake side.
Andrew, your set should be here soon.
Andrew, your set should be here soon.
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06-20-2003, 10:17 PM
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Re: GTP LS6 heads have arrived! (pics inside) Those are nice heads, plus your new setup will be awesome. Hurry up and get it all together so we can see the results!
06-20-2003, 11:22 PM
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Re: GTP LS6 heads have arrived! (pics inside)
Them things sure did look nice 
sniff,sniff, siper trick NASA stuff :p
sniff,sniff, siper trick NASA stuff :p
Yes, I have a TNT kit sitting in my room ready for install. I'm just going to wait until I have forged pistons before putting the kit on.
06-21-2003, 12:04 AM
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Re: GTP LS6 heads have arrived! (pics inside) You want to use the heat generated by combustion to push down on the piston rather than bleed off into surrounding surfaces during the power stroke. This is the purpose of the thermal barrier coatings in the chambers, valves, and pistons.
06-21-2003, 09:02 AM
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Re: GTP LS6 heads have arrived! (pics inside) After it everthing is put together and comes together, I can't wait to see your new time. Good luck in your quest. Cheers........
06-21-2003, 09:24 AM
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Re: GTP LS6 heads have arrived! (pics inside)
How much were they?
Of course, these are just wild guesses. YMMV.
-Andrew
06-21-2003, 11:29 AM
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Re: GTP LS6 heads have arrived! (pics inside) The heads were $$$, but I am offsetting alot of the cost by selling my old 5.3l heads.
LOL Ron, if you say so..... :p
LOL Ron, if you say so..... :p
06-21-2003, 01:16 PM
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Re: GTP LS6 heads have arrived! (pics inside)
Jason,I have something else for you ready :p
Jason