Need Heads...Step Inside
02-26-2008, 09:43 PM
#1
Racer
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Need Heads...Step Inside
Alright, I've came to the point to where I'm ready to do a set of heads and maybe a fast 92/92 combo. Currently, I have added the following already and would like your input on a set of heads to maximize my combo for the most power:
The car makes EXCELLENT power as it sits but it still isn't enough. At Vengeance it put down 451hp/418tq. I had it dyno'd this past weekend at MPH Performance with the factory Ti catback and it made 440hp/428tq. So, for a cam only car I'd say it's pretty healthy. Now onto heads. I know the AFR's and Trickflow's are amongst the more popular ones but I'm interested in honest non-biased opinions here. I would like to break 500 with a set of heads and maybe a fast 92/92 combo, or would an LS2 intake and 90mm TB suite me equally for less. I'm completely new to NA applications and I'm clueless when it comes to cc's of heads and what that means. All help is GREATLY appreciated.
- LG Pro Long Tube Headers (No Cats)
- LG G5x4 Cam
- Textralia OZ700 Clutch, New Pilot & Throwout Bearing (Billet Steel Flywheel)
- New OEM Master Cylinder
- New Slave Cylinder
- Vararam VR2B Intake
- Carbon Fiber Z06 Air Bridge
- Powerbond 25% Underdrive Pulley
- Bosch SVO 30lb Injectors
- 7.40 Hardened Push Rods
- PRC Spring Kit ( Titanium Retainers, Seats, Seals, and Locks. Springs rated to a 660 Lift)
- LS2 Timing Chain Set
- Ported LS6 Oil Pump
- 180* Thermostat
- Ported Stock TB
The car makes EXCELLENT power as it sits but it still isn't enough. At Vengeance it put down 451hp/418tq. I had it dyno'd this past weekend at MPH Performance with the factory Ti catback and it made 440hp/428tq. So, for a cam only car I'd say it's pretty healthy. Now onto heads. I know the AFR's and Trickflow's are amongst the more popular ones but I'm interested in honest non-biased opinions here. I would like to break 500 with a set of heads and maybe a fast 92/92 combo, or would an LS2 intake and 90mm TB suite me equally for less. I'm completely new to NA applications and I'm clueless when it comes to cc's of heads and what that means. All help is GREATLY appreciated.
02-26-2008, 09:54 PM
#2
Le Mans Master
Member Since: Jul 2005
Location: Shreveport/Bossier Louisiana
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St. Jude Donor '08
Your gonna definantly need AFR's or TF to reach your goal. TF offer a little more PTV clearance but I would speak with Tony Mamo about clearance of his heads with that cam.
02-26-2008, 10:00 PM
#3
How much money do you want to spend, and do you want stock of aftermarket castings?
If you're willing to have your car sit for a little while, you can send your stock 243 castings to TEA and get their Stage 2 port. They will flow 320cfm or more at .600 lift. You'll save money by not having to purchase an aftermarket casting, but you'll have a thinner head overall.
If you want to go with an aftermarket head, I say pick your poison. TFS, AFR, and ET heads are all excellent pieces all at comparable prices for an assembled set. All of these heads being aftermarket casting will have thicker surfaces than a ported set of stock castings.
I can't see that there would be too much difference between a FAST 90/90 and a FAST 92/92, but I'm sure that's open for debate. There are a few well documented ported FAST 90 with ported throttle bodies making over 500 to the tires.
By the way, I saw your car down at MPH on Sunday when I was leaving. Good looking ride.
If you're willing to have your car sit for a little while, you can send your stock 243 castings to TEA and get their Stage 2 port. They will flow 320cfm or more at .600 lift. You'll save money by not having to purchase an aftermarket casting, but you'll have a thinner head overall.
If you want to go with an aftermarket head, I say pick your poison. TFS, AFR, and ET heads are all excellent pieces all at comparable prices for an assembled set. All of these heads being aftermarket casting will have thicker surfaces than a ported set of stock castings.
I can't see that there would be too much difference between a FAST 90/90 and a FAST 92/92, but I'm sure that's open for debate. There are a few well documented ported FAST 90 with ported throttle bodies making over 500 to the tires.
By the way, I saw your car down at MPH on Sunday when I was leaving. Good looking ride.
02-26-2008, 10:06 PM
#4
Racer
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How much money do you want to spend, and do you want stock of aftermarket castings?
If you're willing to have your car sit for a little while, you can send your stock 243 castings to TEA and get their Stage 2 port. They will flow 320cfm or more at .600 lift. You'll save money by not having to purchase an aftermarket casting, but you'll have a thinner head overall.
If you want to go with an aftermarket head, I say pick your poison. TFS, AFR, and ET heads are all excellent pieces all at comparable prices for an assembled set. All of these heads being aftermarket casting will have thicker surfaces than a ported set of stock castings.
I can't see that there would be too much difference between a FAST 90/90 and a FAST 92/92, but I'm sure that's open for debate. There are a few well documented ported FAST 90 with ported throttle bodies making over 500 to the tires.
By the way, I saw your car down at MPH on Sunday when I was leaving. Good looking ride.
If you're willing to have your car sit for a little while, you can send your stock 243 castings to TEA and get their Stage 2 port. They will flow 320cfm or more at .600 lift. You'll save money by not having to purchase an aftermarket casting, but you'll have a thinner head overall.
If you want to go with an aftermarket head, I say pick your poison. TFS, AFR, and ET heads are all excellent pieces all at comparable prices for an assembled set. All of these heads being aftermarket casting will have thicker surfaces than a ported set of stock castings.
I can't see that there would be too much difference between a FAST 90/90 and a FAST 92/92, but I'm sure that's open for debate. There are a few well documented ported FAST 90 with ported throttle bodies making over 500 to the tires.
By the way, I saw your car down at MPH on Sunday when I was leaving. Good looking ride.
02-26-2008, 10:11 PM
#5
I think roller rockers are a good idea regardless of which head you decide to go with. I wasn't sure of the price difference between the 90/90 and the 92/92. I think that is strictly a call you'd have to make, and I don't think you'd go wrong with either one.
02-26-2008, 10:14 PM
#6
Drifting
I have pretty much the same setup as you, and I bought the AFR 205s milled to 59cc, and I have the 90/90 setup (unported). The car made 490/443.
If I could do it again I probably would go with trickflows and milled them to 58cc since I have seen slightly better numbers from them in similar applications. I would also have ported my FAST...I still may to try to hit that 500 mark.
But you cant go wrong with either head...look for the best deal i guess.
If I could do it again I probably would go with trickflows and milled them to 58cc since I have seen slightly better numbers from them in similar applications. I would also have ported my FAST...I still may to try to hit that 500 mark.
But you cant go wrong with either head...look for the best deal i guess.
02-27-2008, 08:01 AM
#7
Melting Slicks
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give Gunnar a buzz at Patriot Performance- have his cnc'd 243 heads w/ the double gold springs-
when you say 500 hp is that at the flywheel or the rear? It is helpful to specify.
give Rick a call at Livernois Motorsports as well -been there and they do all their own cnc work in house -Rick knows vettes.
when you say 500 hp is that at the flywheel or the rear? It is helpful to specify.
give Rick a call at Livernois Motorsports as well -been there and they do all their own cnc work in house -Rick knows vettes.
02-27-2008, 09:21 AM
#8
Racer
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give Gunnar a buzz at Patriot Performance- have his cnc'd 243 heads w/ the double gold springs-
when you say 500 hp is that at the flywheel or the rear? It is helpful to specify.
give Rick a call at Livernois Motorsports as well -been there and they do all their own cnc work in house -Rick knows vettes.
when you say 500 hp is that at the flywheel or the rear? It is helpful to specify.
give Rick a call at Livernois Motorsports as well -been there and they do all their own cnc work in house -Rick knows vettes.
500 Rear Wheel
