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05-11-2016, 12:59 PM
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#1 |
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Member
Join Date: Oct 2004
Location: selmer,tn
Posts: 110
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440 pushrod problem
my dad runs a 440 in a 70 challenger.
it has: Indy alum heads Crane rockers Mancini shafts Indy pushrods He has been running this combo for 3 years. he went to check the valves and look over everything and found 2 pushrods on each side burned on the ends and cracked. Appears they are not getting oil. Talked to Indy and Hensley and they really haven't had this problem. has anybody ever had this problem? Open to suggestions |
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05-11-2016, 02:16 PM
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#2 |
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Join Date: Apr 2015
Posts: 177
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Re: 440 pushrod problem
Yes, I had the same problem with my Super Stocker. I was using Trend
pushrods the Chrysler type which were supposed to be the hot ticket at the time. Only one or two would randomly do this, but I never knew which one until after they were discolored. It wasn't the lash adjustment. I never did figure it out. I changed the adjusters on the Jesel rockers and went back to a Chevy type pushrod. No more problems. 305 Chevy |
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05-11-2016, 10:26 PM
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#3 |
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Member
Join Date: Dec 2003
Location: Wilson NC
Posts: 106
Likes: 300
Liked 52 Times in 9 Posts
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Re: 440 pushrod problem
Call Al @ Manton pushrods he helped me out last week.
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Jim Morgan 1916 , 9916 STK |
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05-17-2016, 04:43 PM
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#4 |
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VIP Member
Join Date: Dec 2007
Location: Arizona, Texan forever
Posts: 1,175
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Re: 440 pushrod problem
You need more oil to the top of the engine. Start by replacing the 3/8 oil pick up with 1/2 inch, and high volume pump. Do you use lifter bore bushings? Also, run additional oil lines to each oil galley by tapping into them and oil supply line tapped into the block near the oil pressure sender. Problem solved.
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Gary Hansen - SS/FA 4911, B/SA 4911 |
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05-20-2016, 04:30 PM
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#5 |
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Member
Join Date: Nov 2003
Location: Out to Lunch
Posts: 191
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Liked 26 Times in 11 Posts
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Re: 440 pushrod problem
Groove the #4 Cam Journal like a HEMI.
See you at the races, Wayne Kerr |
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05-31-2016, 12:12 PM
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#6 |
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Member
Join Date: Jan 2009
Location: Las Vegas, NV
Posts: 184
Likes: 9
Liked 45 Times in 32 Posts
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Re: 440 pushrod problem
While grooving the #4 cam bearing is fine Indy heads are not fed oil that way to the rockers. They are fed through oil lines at the back of the heads. Burnt tips are obviously from an oil issue. Look for issues with the rockers that had pushrod problems. I do not and will not run the Indy/Dove rockers but you may want to check them for obstructions or possibly the adjuster is out to far not letting oil pass through to the tip....If that is the case the pushrods are the incorrect length.
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