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  #1  
Old 04-03-2010, 09:33 PM
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1985 Nelson 1985 Nelson is offline
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1985 f250 6.9 rocker arms

what are the best rocker arms to use in my motor. i am doing a little tuneup since i have to replace my oil pressure sending unit.
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  #2  
Old 04-03-2010, 10:01 PM
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7.3 style rockers are much stronger, direct bolt on swap.
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86 F250 HD 6.9 IDI ATS turbo "not exactly" stock 4x4 T19 BW1345 3.55LS both ends D60 front, 10.25" Sterling rear, ram air, dual stacks.

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  #3  
Old 04-03-2010, 10:05 PM
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Dave, what is the difference between the two styles? I have yet to have the chance to open up a 7.3 and was wondering.
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81 BRONCO 6.9 IDI, ARP headstuds, 3" dual straight pipes, isspro pyrometer, T18 4 Speed, 10.25 rear, d60 front, 4:10 gears, 37x12.5x16.5 wrangler m/t's (humvee takeoffs), 4" body lift. I am building the Bronco Ford should have!
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  #4  
Old 04-03-2010, 10:23 PM
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83 thru 86 6.9 rockers

Picture from DPS Performance.

Click the image to open in full size.

Pivot point after 300 miles, notice the wear.

Click the image to open in full size.

From the bottom, round means the rockers can shift around in a circle.

Click the image to open in full size.



87 6.9 and 88 thru 94 7.3 style rockers

Click the image to open in full size.

Square means no circles.

Click the image to open in full size.

Rockers that go in circles make push rods that look like this, pictures from my collection now.

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And that makes pistons sit like this.

Click the image to open in full size.

With the block being destroyed in the process since it cracked when the valve made contact with the piston and broke the piston.
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Old 04-03-2010, 10:30 PM
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O.K. I see now. I am still looking for a set of 7.3 rockers myself. I have a buddy in Petersburg ky with a 93 F250 4x4 that runs it real hard and does little to no maintance on it. It also has the zf5 in it. I told him that when he blows it up i want first dibs on the truck lol. It also has a chuffing valve in it for the last 3 years and is still chugging along. i wonder if I will ever get a chance at that thing lol.
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81 BRONCO 6.9 IDI, ARP headstuds, 3" dual straight pipes, isspro pyrometer, T18 4 Speed, 10.25 rear, d60 front, 4:10 gears, 37x12.5x16.5 wrangler m/t's (humvee takeoffs), 4" body lift. I am building the Bronco Ford should have!
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Old 04-03-2010, 10:40 PM
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You may be waiting for a while yet.

I priced them for someone a while back, and if I remember right they were not that expensive.

Let me think a while, I may be able to remember where I priced them at.
Probably have a link on my dead hard drive.
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Old 04-03-2010, 11:32 PM
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someone mentioned getting a set for 96 bucks not to long ago. I forget which store it was, but I thought it was cheap.
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Old 04-04-2010, 12:01 AM
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Quote:
Originally Posted by kenpobuck View Post
I am still looking for a set of 7.3 rockers myself.
I have an extra set of 7.3 rocker arms....once I get my engine put together and see I don't need them I'd be willing you sell you them for the price I bought them to help you out.
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Old 04-04-2010, 03:05 AM
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would you suggest me changing the pushrods also?
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  #10  
Old 04-04-2010, 11:18 AM
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If the push rods are straight and within spec for length, there is no reason, they are the same push rod.
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86 F250 HD 6.9 IDI ATS turbo "not exactly" stock 4x4 T19 BW1345 3.55LS both ends D60 front, 10.25" Sterling rear, ram air, dual stacks.

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  #11  
Old 04-04-2010, 05:14 PM
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mabc926, That would be great. Shoot me a pm about it.
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81 BRONCO 6.9 IDI, ARP headstuds, 3" dual straight pipes, isspro pyrometer, T18 4 Speed, 10.25 rear, d60 front, 4:10 gears, 37x12.5x16.5 wrangler m/t's (humvee takeoffs), 4" body lift. I am building the Bronco Ford should have!
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  #12  
Old 11-10-2013, 03:02 PM
queen of spades queen of spades is offline
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Who sells the 7.3 style rocker arms? Checked Napa and they have the same part listed for 6.9 and 7.3, which is the 6.9 style.
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Old 11-10-2013, 03:02 PM
 
 
 
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