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10-17-2006, 10:09 PM | #1 |
Registered User
Join Date: Nov 2005
Location: nc
Posts: 118
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2 Problems with 350 Assembly
I am putting together my 350 ('85 4X4) just recently out of the machine shop. I scored a deal on some double hump heads that are of a 1970 vintage. I am at the point where I am torqueing the heads down. Here's problem #1,
1. Do I go by the torque specs for the year of the heads? (65 ft/lbs) or by the year of the block? (130 ft/lbs) Very big difference to me..... I am using an oil priming shaft to get the oil up to the heads and lifters and on the left side I am not getting nearly the oil as the right side. All the lifters were primed before installation 2. Any ideas why I am getting no oil?????? Thanks, Jeremy |
10-17-2006, 10:20 PM | #2 |
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Join Date: Sep 2005
Location: spokane, washington
Posts: 302
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Re: 2 Problems with 350 Assembly
130!?
which publication are you reading. i have only torque them to the specified 65 ft/lbs. allthough i have read somewhere that you should go 65 on the upper bolts(within the valve cover area) and 75 for the bottom row. it might be reversed but i cant remember. i have also had times when the lifters on one side would not pump up as much as the other side. an engine builder i know said to turn the crankshaft in small increments and see if that helps. good luck steve |
10-17-2006, 10:38 PM | #3 |
Registered User
Join Date: Apr 2004
Location: Grant, Alabama
Posts: 504
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Re: 2 Problems with 350 Assembly
130 pounds will do some damage or strip/break bolts. Thats deisel engine territory there. Stick with the factory recomended settings or whatever aftermarket bolts or studs you may use, like ARP.
__________________
72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape. |
10-19-2006, 08:19 PM | #4 |
It'd be alot cooler if you did
Join Date: May 2003
Location: Three Rivers, MI
Posts: 2,345
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Re: 2 Problems with 350 Assembly
65 LBS will work fine. Make sure you start in the middle and work you way to both edges, alternating sides. Make sure they all get tourqed down the same amount, none of this some get 65 and some get 75 bussiness.
as for the oil, I've never had that problem. |
10-19-2006, 10:04 PM | #5 |
Registered User
Join Date: Apr 2005
Location: Ar
Posts: 558
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Re: 2 Problems with 350 Assembly
yeah I had the same problem priming my engine just rotate the crank and continue priming. They all will flow equal after that. Priming is hell on a drill,though. I've burnt up one and working on the second.
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