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408 clearance problem

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Old May 3, 2006 | 06:07 PM
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From: cleveland OH
Default 408 clearance problem
Has anyone that has built a 408 ran into this my #1 connecting rod bolt is hitting the oil pan. Anyone else come accross this?????
Eagle 4.00" crank
Eagle 6.125" rods with arp bolts
Diamond 4.030" pistons
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Old May 3, 2006 | 06:09 PM
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mine cleared no problem, no grinding, but i am running callies rods, maybe its a eagle issue.
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Old May 3, 2006 | 07:22 PM
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Originally Posted by Badls6SS
Has anyone that has built a 408 ran into this my #1 connecting rod bolt is hitting the oil pan. Anyone else come accross this?????
Eagle 4.00" crank
Eagle 6.125" rods with arp bolts
Diamond 4.030" pistons
Are you it's not the rod bolt scraping against the windage tray? You're supposed to shim the windage tray for clearance.
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Old May 3, 2006 | 08:01 PM
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Originally Posted by DrkPhx
Are you it's not the rod bolt scraping against the windage tray? You're supposed to shim the windage tray for clearance.
It's probably hitting the windage tray. Just space it out with some washers.

Nate
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Old May 3, 2006 | 10:21 PM
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Originally Posted by DrkPhx
Are you it's not the rod bolt scraping against the windage tray? You're supposed to shim the windage tray for clearance.
NO!!!!!! i shimmed the tray this is hitting the oil pan the tray on the F body only goes from the #3-#8 cylinders #s 1 and 2 don't hit the windage tray.
I have heard that callies and lunati rods don't have a problem. I want to hear from anyone else w/ eagle rods w/ a 408
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Old May 4, 2006 | 11:24 AM
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Originally Posted by Badls6SS
NO!!!!!! i shimmed the tray this is hitting the oil pan the tray on the F body only goes from the #3-#8 cylinders #s 1 and 2 don't hit the windage tray.
I have heard that callies and lunati rods don't have a problem. I want to hear from anyone else w/ eagle rods w/ a 408
my buddy used eagle rods and arp bolts..no problems during the build up.
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Old May 4, 2006 | 12:47 PM
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From: detroit, Mi
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Mine hit bad, I have aluminum rods though. I cut a hole about 2" by 1" where the problem area is and welded a plate to the bottom. problem fixed.

Matt
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Old May 6, 2006 | 09:31 AM
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Hey, I had the same problem, just barely hit, clearanced itself out, about .05 inch groove in my pan now, didn't catch it till I took it apart after a nitrous boom!
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Old May 6, 2006 | 02:42 PM
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I had the same problem with my 4.100 eagle crank & 6.125 rods, cut a gruve in the pan to clear the rod bolt
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Old May 7, 2006 | 07:13 PM
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From: cleveland OH
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yea I had to grind the oil pan to get it to fit. As i was doing that it got to thin around the groove that was in the stock pan so i sent it out and had the pan reinforced around that area by welding it and regrinding it
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Old May 8, 2006 | 11:05 PM
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Yes on some you have to grind the pan every once in a while but not always and this goes for all strokers as well.
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