ccajun4real

iTrader: (29)

I am putting TFS 220 as cast heads with clean up by TEA on my LS2. I have a ported FAST 102 combo and all bolt ons. I would prefer to use a .040 head gasket but may have to stay with .052 MLS since heads are milled to 59cc. I need to know proven cams for these heads to make max 1/4 mile HP/TQ. I did a search but nothing definitive. I have also consulted several trusted sources for cam specing but want to get more rather than less opinions. I know there are alot of very technically intelligent people here so please give your opinions.

Cajun

litle88

iTrader: (20)

Vrx5 or vindicator. Just my .02
With a ported fast 90/90 tfs 220's full boltons and a vrx5 in an m6 and Straightline's mustang dyno I made 457 hp and 403 tq.

Neumonic2002

Cajun,
I felt my LS2 needed a newer lobe design cam and went with a 235/239 Comp grind with LSL lobes, the cam has 13 degrees overlap so it is a bit rowdy and has some bucking between 1300-1600 but I've learned to drive around it. Look at the dyno I just posted in my thread, the results show my gains of 39/27 at the tires using these very heads with a street tune! My setup was designed for 1/4 mile, look at the powerband.
Dsteck and I will complete the WOT tuning on the same dyno in a couple months, I expect to pick-up another 5/5 easily with some tweaking to the AFR and timing.

JPH

iTrader: (2)

Intake Duration @.050= 237-240* range
Exhaust Duration @050= 241-244* range
Intake Lobe Lift= .357-.367w/1.7s
Exhaust Lobe Lift= .357-.367 w/1.7s
Lobe Separation Angle= 110-112*
Intake Centerline= 108-110*
Averages: 239/243(rounded up) .615/.615 111+2

chrs1313

iTrader: (24)

^^^^ agreed

ccajun4real

iTrader: (29)

Thank you. Similar to cam speced by a very technically intelligent LSx guy

235 LSK / 240 XER 113LSA

JPH

iTrader: (2)

Cool. I guess I wasn't to far off.

Neumonic2002

Same here

cough, cough....my 235/239

FlamingTA

iTrader: (8)

Are you going to use stock rockers? An LSK lobe with the heavy solid TFS 2.04 or 2.055 valves, might run into some problems with valve control. I could be wrong tho.

ccajun4real

iTrader: (29)

Plan to use Harland Sharp 1.7 NA roller rockers I am pretty sure they have the 2.04 valves

Summit Racing Part Number TFS-3060T001

Cylinder Head Style Assembled
Cylinder Head Material Aluminum
Cylinder Head Finish Natural
Combustion Chamber Volume (cc) 64
CNC-Machined Combustion Chamber Yes
Intake Runner Volume (cc) 220cc
Exhaust Runner Volume (cc) 80cc
CNC-Machined Intake Runner No
CNC-Machined Exhaust Runner No
Intake Port Location Standard
Exhaust Port Location Standard
Spark Plug Style Angle
Intake Valves Included Yes
Intake Valve Diameter (in) 2.040 in.
Exhaust Valves Included Yes
Exhaust Valve Diameter (in) 1.570 in.

FlamingTA

iTrader: (8)

Those are about the heaviest "over the nose" rockers out there. You will not be able to run the LSK lobe with HS rockers with the solid valves on the TFS heads.

Neumonic2002

My installer tried the HS rockers on his personal car to try them out, he had to take them off due to valve float...he was using a very capable spring, Comp 26926.

ZGLASS

iTrader: (11)

I ran these heads with YT 1.7 UL. I sold them to Cajun. We ran up to 6800rpm with no issues on a cam motion .614 lift cam.

Neumonic2002

I am running the Yella Terra UL 1.7's on mine, he mentioned Harland Sharp's.

Unertl42

iTrader: (63)

I'm also running the VRX5, the numbers in my sig are before I ported my fast

litle88

iTrader: (20)

Yup^^^^ I had 456 on straightlines mustang dyno! Those two really work well together.

03EBZ06

I would not do that. I broke 2 HS rockers on 2 different occassions. Since I have had the YT ( 2years), no breakage. I'm not saying one is better, but the YTs have not broken. Credit to HS, they did replace the rockers, but I never put them back on the engine.