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help! I just changed my stock intake manifold to an edelbrock proformer with a 650 holley. I have headers and dual exhaust. It is a 352 from a 1965 t-bird. I think i messed up the push rods? I thought they were all the same length but that is not the case. I have pertronix ignition as well. It seems that 4 of the push rods are longer then the other 4. If this is correct which valves get the longer rods and which get the shorter ones. is it the same on both sides of the V-8? And because of the tapping I am going back in and changing the lifters next week end. Im looking at comp cam hydrolic from summit racing for around $84.00
The push rods for the non-adjustable rockers could indeed be differents lengths. Check this article for vavle clearancing. FE's That Bend Push-rods, A Dirty little Secret .: Articles. It seems to me that changing the cam to something other than a stock grind could change the geometry further requiring different push rods. If you ran the engine with the mismatched push rods, you may have bent some as well. The stock rocker shafts can also bend when not loaded and unloaded properly. Hopefully this is not the case. Good luck.
help! I just changed my stock intake manifold to an edelbrock proformer with a 650 holley. I have headers and dual exhaust. It is a 352 from a 1965 t-bird. I think i messed up the push rods? I thought they were all the same length but that is not the case. I have pertronix ignition as well. It seems that 4 of the push rods are longer then the other 4. If this is correct which valves get the longer rods and which get the shorter ones. is it the same on both sides of the V-8? And because of the tapping I am going back in and changing the lifters next week end. Im looking at comp cam hydrolic from summit racing for around $84.00
A 1965 T-Bird would be a 390, not a 352. The push rods should be all the same length, but with wear, you never know.
My 352 was out of an old Fairlane I believe, and the push rods are all equal length, they are listed in the parts books as being the same length and they are the same as the 390 also... I went to a different grind Cam shaft but the stock push rod length worked out to be correct.. I have a Comp Cam, 246 grind with the 390 performer manifold, and an 1805 thunder series 650 cfm Edelbrock Summit racing, Jegs and all of them show the push rods as being the same length, until you start messing with roller lifters and roller rockers.
Here is a link to the FE SPECS, You will find that almost all of the engines use the same basic specs with the only major differences being bore and stroke with a few minor exceptions
Applications: 1960/64 Passenger Car 352/390 / 1965/67 352 Passenger Car (xcpt P/C) & F100/350 / 1965/67 390 Passenger Car (xcpt P/C) / 1968 390 Passenger Car (xcpt P/C) & F100/350 360/390 before change L/2.
These same pushrods were also used in 1966/67 Mercury 410 / Some 1966/68 Ford/Merc 428 = Too many applications to list.
-------------------------------------------------------------------------------------------------------------------------- C8AZ-6565-A .. Pushrod ~ standard-9.59" overall length).
Thank you to all who replyed. The links and of course numbersdummy are always a great help. I guess the years of wear and tear have caused the rods to change ever so slightly. Im putting in new lifters this weekend hoping to rid the truck of that tapping. thanks again
Roll those push rods across a mirror, or very flat table and see if there are any bent rods. that will cause your tapping noise for sure, as the valve lash will be incorrect.
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