Seriously need pushrod help, please!
06-17-2011, 10:37 AM
#1
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Seriously need pushrod help, please! I've been reading, and I still have questions.
Like,
(1) Where do I find upgrade pushrods in the $50 price range?
(2) Why aren't there any 7.37" pushrods?
For those of us who want to mill our heads by 0.030", since these rockers aren't adjustable like the old SBC.
(3) Do we just put shims under the rocker stands?
(4) If so, why am I not seeing these advertised?
I really need some 7.37" pushrods for $50!
Like,
(1) Where do I find upgrade pushrods in the $50 price range?
(2) Why aren't there any 7.37" pushrods?
For those of us who want to mill our heads by 0.030", since these rockers aren't adjustable like the old SBC.
(3) Do we just put shims under the rocker stands?
(4) If so, why am I not seeing these advertised?
I really need some 7.37" pushrods for $50!
06-17-2011, 12:37 PM
#4
See below.
I've been reading, and I still have questions.
Like,
(1) Where do I find upgrade pushrods in the $50 price range?
Even Trend isn't that inexpensive and they make them for others. Used for that price.
(2) Why aren't there any 7.37" pushrods?
Custom length and certainly not for $50.
For those of us who want to mill our heads by 0.030", since these rockers aren't adjustable like the old SBC.
Don't follow the logic here. Are you subtracting 0.030 fropm 7.400? If so, know that 7.400 isn't even the stock length.
(3) Do we just put shims under the rocker stands?
To alter the wipe pattern you can shim or lower the rockers as required to get the geometry correct. Pushrods on the LS1 won't do this.
(4) If so, why am I not seeing these advertised?
I really need some 7.37" pushrods for $50!
Like,
(1) Where do I find upgrade pushrods in the $50 price range?
Even Trend isn't that inexpensive and they make them for others. Used for that price.
(2) Why aren't there any 7.37" pushrods?
Custom length and certainly not for $50.
For those of us who want to mill our heads by 0.030", since these rockers aren't adjustable like the old SBC.
Don't follow the logic here. Are you subtracting 0.030 fropm 7.400? If so, know that 7.400 isn't even the stock length.
(3) Do we just put shims under the rocker stands?
To alter the wipe pattern you can shim or lower the rockers as required to get the geometry correct. Pushrods on the LS1 won't do this.
(4) If so, why am I not seeing these advertised?
I really need some 7.37" pushrods for $50!
06-17-2011, 08:58 PM
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I don't feel bad that I'm an ignorant dumbass.
Special thanks to vettenuts for explaining. So, what length should I need for a pure stock 5.3 with NO mods except shaving the heads 0.030", if not 7.37"?
Thanks!
Special thanks to vettenuts for explaining. So, what length should I need for a pure stock 5.3 with NO mods except shaving the heads 0.030", if not 7.37"?
Thanks!
06-18-2011, 07:28 AM
#6
Give TSP a call since they responded in the thread. I am not sure of the 5.3 stock length, although would be curious to know the answer since I have a 5.3 in my Silverado, and then subtract 0.030" and get the closest length available to that value. The stock length of the LS1 is 7.385". The 7.400" length is the one most find works as a direct replacement for stock when a cam is installed because it makes up for the smaller cam base circle when swapped one for one.
Hope that all makes sense.
Hope that all makes sense.
06-18-2011, 05:21 PM
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My suggestion would be to buy a adjustable push rod tool. Mark your valve with a sharpie marker. Install the tool. Turn the engine over. Remove the rocker arm. If the line is not in the center of the valve adjust as needed. When you have it in the center. Measure it. Then order your push rod that size.
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06-18-2011, 06:04 PM
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My suggestion would be to buy a adjustable push rod tool. Mark your valve with a sharpie marker. Install the tool. Turn the engine over. Remove the rocker arm. If the line is not in the center of the valve adjust as needed. When you have it in the center. Measure it. Then order your push rod that size.
06-19-2011, 08:39 AM
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06-20-2011, 04:31 PM
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I thank you all for the education, I believe I understand a bit better now.
I'm still bewildered that pushrods should cost so damn much more $ than hardened SBC 350 pushrods, especially since these are now selling in greater quantities.
I guess I'll forget milling the heads more than 0.005", keep the stock pushrods, and try to find some used 4.8L pistons.
I'm still bewildered that pushrods should cost so damn much more $ than hardened SBC 350 pushrods, especially since these are now selling in greater quantities.
I guess I'll forget milling the heads more than 0.005", keep the stock pushrods, and try to find some used 4.8L pistons.
