Pushrod length for 58cc Trick Flow 215's?
10-15-2007, 01:59 PM
#3
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TFS heads come with 7.500" pushrods. They also have a stock CC volume of 63-64ccs. Call whoever you bought em from to see how much they were milled, and take that off the length of the pushrods, and you're good to go.
10-15-2007, 04:18 PM
#4
They sent 7.5" pushrods with my heads. The problem is I am receiving the heads tomorrow and installing them tomorrow so I can tune tomorrow night and race on Wednesday, which is the last day of the season. If we find out tomorrow that they are too long then I am screwed and will have to wait until next Spring to race. I doubt my local shop has 7.4" pushrods just lying around.
Hopefully the 7.5" are the right length. Otherwise it is going to be a very long winter for me.
Hopefully the 7.5" are the right length. Otherwise it is going to be a very long winter for me.
10-15-2007, 05:41 PM
#5
Sorry, its going to be a long winter. The Morel's are taller and require a shorter pushrod. They also require 0.030" - 0.050" preload, further shortening the pushrods. You "could" end up at 7.400" though so if you have an adjustable then measure and confirm. You don't want to run too much preload as they might hold the valves open and you could damage your new heads. I found I needed about 0.100" shorter pushrods but I can't stress enough to measure.
10-15-2007, 10:00 PM
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Sorry, its going to be a long winter. The Morel's are taller and require a shorter pushrod. They also require 0.030" - 0.050" preload, further shortening the pushrods. You "could" end up at 7.400" though so if you have an adjustable then measure and confirm. You don't want to run too much preload as they might hold the valves open and you could damage your new heads. I found I needed about 0.100" shorter pushrods but I can't stress enough to measure.
10-16-2007, 09:11 AM
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Sorry, its going to be a long winter. The Morel's are taller and require a shorter pushrod. They also require 0.030" - 0.050" preload, further shortening the pushrods. You "could" end up at 7.400" though so if you have an adjustable then measure and confirm. You don't want to run too much preload as they might hold the valves open and you could damage your new heads. I found I needed about 0.100" shorter pushrods but I can't stress enough to measure.
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10-16-2007, 10:20 AM
#8
I read they were taller when I bought mine. Once received, I did some measuring and they are taller so they are not drop in with the same pushrod. What might save the original poster is his shorter pushrods might end up at 7.400" due to the Morel length and less preload required, but he needs to measure and confirm.
Morel doesn't have a tech line (although I did speak with Rick Morel on some other questions). Chris Straub may be able to answer your questions though if you contact him. These are fabulous lifters, but they do require different pushrods.
