Tfs + Roller Rockers + Cam?
Thread Starter
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
Tfs + Roller Rockers + Cam?
If had to choose a cam for this setup, what would it be? I'm thinking
228/232 on a 112LSA or there about.
If you choose a cam > 230 degrees intake duration, please state your theory for this. What should the spread be on the intake/exh durations for these heads? I do plan to run a long tube header.
228/232 on a 112LSA or there about.
If you choose a cam > 230 degrees intake duration, please state your theory for this. What should the spread be on the intake/exh durations for these heads? I do plan to run a long tube header.
Last edited by 427CPE; May 19, 2007 at 01:50 PM.
Thread Starter
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
I am just starting to modify a 02 Z06. 0z 700 clutch on the way and will be using halltech stinger. Next up is heads/cam/exhaust or maybe just cam/headers. The engine is the stock 346. The 427 was my Mustang. I want max power < 6500rpm. Car is weekend warrior only. It will get drag raced but is a street car. Probably have cats.
I am particulary interested to know of comparions between say a
224/228 on a 112 COMP CAM and a 232/240 112 COMP CAM.
I suspect the extra duration is a waste, but would love to hear about real time usage.
I have used TFS heads on my Mustang and they were serious power makers. Can't wait to find out if the LS versions are worth it.
Racer
Joined: Nov 2002
Posts: 397
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From: Auburn AL
I have been running the TFS heads for about 4000 miles now and I have been very happy with their performance. I also have a comp cam from Vengeance that is a 224/228 on a 113lsa. It made 470 whp with all of the supporting mods + a ported Fast 90/90. I think you will be very happy if you go this route. The car makes good power down low but it really wakes up at about 3500.
Good Luck
Greg
Good Luck
Greg
Thread Starter
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
Which head gaskets did you use? Did you have a fit problem at all w/stock valve covers, TFS and Harland Sharp Roller Rockers? Wonder what the FAST intake gained. Also, what CC head is yours? I'm thinking I want a smaller chamber to increase compression.
Racer
Joined: Nov 2002
Posts: 397
Likes: 0
From: Auburn AL
I am really not sure what gaskets were used but I know the final CR came to 11.4:1. I did not do the install myself but I know there was significant grinding done on the valve covers to make them fit. Yes, I have the Harland Sharp RRs. The heads are 64cc chambers but a lot of the guys making 500+rwhp had the 59cc chambers. A similar car to mine made 25whp at peak and about 20whp throughout the band with the Fast 90/90 when installed on the dyno. It was pretty impressive.
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
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From: CA.
St. Jude Donor '13-'14-'15
Hello--It says you are from Calif ----Do you have tpoass Smog ??? If so that will really dictate what you can run for a camshaft---The cam you've chosen probably will not pass---I am in Calif also--I passed with a .221/.221 @ 114---But I think you could go a bit larger and still pass--say around a .224-228 @ 114---I don't think a 112 LSA will pass at all-But if you aren't concerned with smog--them Id use the method of study and pick a camshaft for your combunation--then go 1 bigger !!!
Thread Starter
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
Hello--It says you are from Calif ----Do you have tpoass Smog ??? If so that will really dictate what you can run for a camshaft---The cam you've chosen probably will not pass---I am in Calif also--I passed with a .221/.221 @ 114---But I think you could go a bit larger and still pass--say around a .224-228 @ 114---I don't think a 112 LSA will pass at all-But if you aren't concerned with smog--them Id use the method of study and pick a camshaft for your combunation--then go 1 bigger !!!
Come smog time, I'll do some "work" to clean things up. Go 1 bigger, 
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
I did do all my own installation, and I used GM MLS gaskets, and my heads were shaved to 61cc chambers. I didn't have any problems with the HS rocker arms, and stock valve covers. No grinding. My final SCR was 10.95-1 and the DCR was 8.5-1 with my Crane cam@ 228/232 @112+5, and .600/.600 lift. As you probably know, the design of the TFS heads allows more PTV clearance. I have lots of power down low, and midrange is amazing. I didn't care too much about peak power, but this combo screams all the way to 7000, so I guess I'm not missing too much. We only get 92 oct. here, but the tuner said theres no indication of any KR. Traction, however has become a problem.
Thread Starter
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
I did do all my own installation, and I used GM MLS gaskets, and my heads were shaved to 61cc chambers. I didn't have any problems with the HS rocker arms, and stock valve covers. No grinding. My final SCR was 10.95-1 and the DCR was 8.5-1 with my Crane cam@ 228/232 @112+5, and .600/.600 lift. As you probably know, the design of the TFS heads allows more PTV clearance. I have lots of power down low, and midrange is amazing. I didn't care too much about peak power, but this combo screams all the way to 7000, so I guess I'm not missing too much. We only get 92 oct. here, but the tuner said theres no indication of any KR. Traction, however has become a problem.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
Just alot of work, but not too bad. A couple of skinned knuckles, as per my usual.
Oh yeah, be careful of the aluminum crossmember; mine has sharp edges from metal flashings in the castings.
