TFTW heads and push rod lengths?

Rev · 11-20-2001, 07:58 PM

I just ordered new TFTW heads from Summit. New TF 1.7 roller rockers as well. What I need to know is what length push rods are needed. My 289 block was decked .010". I can get an adjustable push rod to check for exact length and then just order the correct length push rods, but it seems like this should be a known entity, considering how many small block Ford TFTW heads are sold.

Rev

jwboner · 11-21-2001, 02:50 AM

I used 6.800" I think. But I have a roller cam. The heads will come with instructions of how long they need to be, or ask the sales rep at summit

Rev · 11-21-2001, 02:41 PM

I did ask the sales rep at Summit and he had not a clue. I called TrickFlow and they said that I had to go the adjustable push rod route and then order the correct length. This is for a flat tappet cam and I believe the length will be around 7.3", but I'll do the adjustable measurment deal and then know for sure before I order.

Rev

jwboner · 11-23-2001, 03:22 AM

Using a flat tappet cam will make the lengths longer. A 5.0 engine usually adds @ 0.50" to pushrod length when using tf heads. Too many unknowns for the tech to be able to tell you what length to go with, the adj pushrod will be the best choice.

mustangman65_79 · 11-23-2001, 07:50 AM

Hmmmmmmmmmmmmm, never thought about pushrod lenth, do u think when I went from 289 heads to 302 heads, that I should have changed them??? (by the way I didn't changed the heads, the guy I bught the car from did, to lazy to redue the old ones, just got new 302 heads.)

11-20-2001, 07:58 PM	#1
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	TFTW heads and push rod lengths? I just ordered new TFTW heads from Summit. New TF 1.7 roller rockers as well. What I need to know is what length push rods are needed. My 289 block was decked .010". I can get an adjustable push rod to check for exact length and then just order the correct length push rods, but it seems like this should be a known entity, considering how many small block Ford TFTW heads are sold. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

11-21-2001, 02:50 AM	#2
jwboner Registered Member Join Date: Jun 2001 Location: Under the hood Posts: 164	I used 6.800" I think. But I have a roller cam. The heads will come with instructions of how long they need to be, or ask the sales rep at summit __________________ 65 fastback 347 DFI injected w/vic jr, TFS heads, MSD, cable clutch TKO, 3.70 9", tc subframe conns, custom traction bars, griffen alum radiator, armored fuel cell, and torq thrust D's Retrofitted Prelude seats. Vintage Air underdash kit. Fiberglass here and there too More on the way all the time.

11-21-2001, 02:41 PM	#3
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	I did ask the sales rep at Summit and he had not a clue. I called TrickFlow and they said that I had to go the adjustable push rod route and then order the correct length. This is for a flat tappet cam and I believe the length will be around 7.3", but I'll do the adjustable measurment deal and then know for sure before I order. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

11-23-2001, 03:22 AM	#4
jwboner Registered Member Join Date: Jun 2001 Location: Under the hood Posts: 164	the best way to go Using a flat tappet cam will make the lengths longer. A 5.0 engine usually adds @ 0.50" to pushrod length when using tf heads. Too many unknowns for the tech to be able to tell you what length to go with, the adj pushrod will be the best choice. __________________ 65 fastback 347 DFI injected w/vic jr, TFS heads, MSD, cable clutch TKO, 3.70 9", tc subframe conns, custom traction bars, griffen alum radiator, armored fuel cell, and torq thrust D's Retrofitted Prelude seats. Vintage Air underdash kit. Fiberglass here and there too More on the way all the time.

11-23-2001, 07:50 AM	#5
mustangman65_79 My poor 79 RIP Join Date: Oct 2001 Location: Suisun City, Posts: 2,320	Hmmmmmmmmmmmmm, never thought about pushrod lenth, do u think when I went from 289 heads to 302 heads, that I should have changed them??? (by the way I didn't changed the heads, the guy I bught the car from did, to lazy to redue the old ones, just got new 302 heads.) __________________ '84 mustang GT turbo '85 LTD '89 Camaro Irocz z28 '94 Lightning '96 Trans am

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