Max lift with TFS heads

95mustanggt · 02-06-2002, 03:43 PM

Looking to match a cam with a set of TFS Heads and 1.6 ration RR's.

I am leaning towards a TFS cam (still wanting to stay with one supplier). But I noticed that the exhaust life is .510". Is that too much with stock pistons?

I want to leave the bottom end for a while yet.

red82gt · 02-06-2002, 03:49 PM

It's more of the intake valve you have to worry about with the TFS heads, the exhaust valve is a pretty standard size (1.6") I don't think that .510 would be a problem, even on the intake side.

drudis · 02-06-2002, 04:46 PM

According to their website and private email reply from them, you are ok up to .540 lift.

http://www.trickflow.com/
Look up the heads and install instructions...

kenneth kimble · 02-06-2002, 04:48 PM

On a 306 and TFS track heat heads, I am using the X303 cam 542 lift with out fly cutting the piston and more then enough clearance

PKRWUD · 02-06-2002, 06:38 PM

I have found that the answer you get depends on who answers the phone, but the accepted limit is .540". I'm sure that could be exceeded, as most recommended limits can, but before doing so, checking with clay might be advisable.

Take care,
-Chris

Thad · 02-06-2002, 09:44 PM

I'm running a f-303 cam with my 306 @ .512 lift. Not as radical as the x-303. But it gives it a nice semi-rough idle that i like.

fastang · 02-07-2002, 02:17 AM

Yeah this is a subject that really rubbed my *** sore. The shop I bought my heads from was REALLY worried about the clearance and told me to even check clearance with my B cam.

I wanted to use an F cam but since the shop was worried I kept the B. After the install I found out that theres PLENTY of clearance and I could have used the cam I wanted. Im not happy at all but its my own fault.

AJSTANG · 02-08-2002, 01:10 PM

I run TFS heads with a cam that is (0.510") on the exhuast side. No problems. The trick flow web site states that max recommended lift is 0.540 " for these heads.

02-06-2002, 03:43 PM	#1
95mustanggt Registered Member Join Date: May 2000 Location: Kamloops, BC Posts: 2,875	Max lift with TFS heads Looking to match a cam with a set of TFS Heads and 1.6 ration RR's. I am leaning towards a TFS cam (still wanting to stay with one supplier). But I noticed that the exhaust life is .510". Is that too much with stock pistons? I want to leave the bottom end for a while yet. __________________ 1995 Mustang GT 20016 F150 Lariat Super Crew

02-06-2002, 03:49 PM	#2
red82gt Sober voice of Reason Join Date: Nov 1998 Location: Kelowna, B.C., Canada Posts: 1,514	It's more of the intake valve you have to worry about with the TFS heads, the exhaust valve is a pretty standard size (1.6") I don't think that .510 would be a problem, even on the intake side. __________________ 393W: AFR 205's, hydraulic roller, TKO600.

02-06-2002, 04:46 PM	#3
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	According to their website and private email reply from them, you are ok up to .540 lift. http://www.trickflow.com/ Look up the heads and install instructions... __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

02-06-2002, 04:48 PM	#4
kenneth kimble Registered Member Join Date: Apr 1999 Location: chesapeake va. Posts: 89	TFS cam On a 306 and TFS track heat heads, I am using the X303 cam 542 lift with out fly cutting the piston and more then enough clearance

02-06-2002, 06:38 PM	#5
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I have found that the answer you get depends on who answers the phone, but the accepted limit is .540". I'm sure that could be exceeded, as most recommended limits can, but before doing so, checking with clay might be advisable. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

02-06-2002, 09:44 PM	#6
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	I'm running a f-303 cam with my 306 @ .512 lift. Not as radical as the x-303. But it gives it a nice semi-rough idle that i like. __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

02-07-2002, 02:17 AM	#7
fastang Registered Member Join Date: Aug 2000 Location: santa ana ca Posts: 1,349	Yeah this is a subject that really rubbed my *** sore. The shop I bought my heads from was REALLY worried about the clearance and told me to even check clearance with my B cam. I wanted to use an F cam but since the shop was worried I kept the B. After the install I found out that theres PLENTY of clearance and I could have used the cam I wanted. Im not happy at all but its my own fault. __________________ 98 GT manual trans, Magna Flow exh. old car: 95GT, TFS T.W. heads, Holley Intake, B303 cam, FRPP 30lb injectors, Scorpion 1.6 rollers, 65mm TB, 73mm MAF, BBK Longtubes, Flowmaster cat back, March Pulleys, MSD coil, 9mm wires, Tremec 3550 trans, Pro5.0 shifter,10.5 Motorsport clutch, FMS aluminum driveshaft, weld in subframe connectors. 190lph pump, BBK adj FPR.

02-08-2002, 01:10 PM	#8
AJSTANG Registered Member Join Date: Nov 2000 Location: Maryland Posts: 123	I run TFS heads with a cam that is (0.510") on the exhuast side. No problems. The trick flow web site states that max recommended lift is 0.540 " for these heads. __________________ '91 Notchback TFS Heads(stage 2), B-451 Cam, V2-Si trim, TKO-600

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