Pushrods for my 351w
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
Pushrods for my 351w
Hi, fellas.
I finally measured for pushrod length. I have a 351w that I had machined and decked, etc. My new cam lift .477/.493. Stock length is 8.150. With lifter pre-load (0.25) factored in I ended up with 8.275 for my new pushrod length.
Does anyone have a similar situation?
Where should I get my pushrods? And what brand?
Thank you - Thomas
I finally measured for pushrod length. I have a 351w that I had machined and decked, etc. My new cam lift .477/.493. Stock length is 8.150. With lifter pre-load (0.25) factored in I ended up with 8.275 for my new pushrod length.
Does anyone have a similar situation?
Where should I get my pushrods? And what brand?
Thank you - Thomas
Thread Starter
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
I measured it all up with checking springs on there so the AFR valve springs on the heads would not overpower the lifters. Then once I got the length measured without any load present on the lifters, I added .025 to the length to accommodate the load on the lifters.
Got the pre-load number from Comp Cams and AFR. (.030 give or take .010)
Got the pre-load number from Comp Cams and AFR. (.030 give or take .010)
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Joined: Jan 2001
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From: Virginia
Then you are running guide plates and adjustable rockers correct? That means your valvetrain is adjustable, so the pushrod length just needs to be in the neighborhood. In other words, you could use the pushrods you have, except your contact pattern on the valve tip to the rocker may not be correct. You did use the magic marker trick and checked the pattern on the valve tips with your setup springs and adjustable setup pushrod? You get a nice centered pattern with the 8.275 pushrod?
Thread Starter
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
Yep. Very nice pattern. I checked them yesterday. And just for good measure, checked a different cylinder today.
I guess you're right - they hydraulic lifters would allow for some leeway.
I am surprised that with the bigger lift cam and decked block they weren't very much longer than the stock 8.150.
Everywhere is out of stock of the ones I need for my build - COMP Cams 7773-16 Hi-Tech 8.275" Long.080" Wall, 5/16" Diameter Pushrod Set.
I guess I could work on something else for now while I wait. Maybe change the diff fluid front and back, or the re-pack the rear wheel bearings. Front's I did already.
- Thomas
I guess you're right - they hydraulic lifters would allow for some leeway.
I am surprised that with the bigger lift cam and decked block they weren't very much longer than the stock 8.150.
Everywhere is out of stock of the ones I need for my build - COMP Cams 7773-16 Hi-Tech 8.275" Long.080" Wall, 5/16" Diameter Pushrod Set.
I guess I could work on something else for now while I wait. Maybe change the diff fluid front and back, or the re-pack the rear wheel bearings. Front's I did already.
- Thomas
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FTE Legend
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From: Angier, NC
What rear axle you have that you repack the wheel bearings?
I thought they all got lubed from the axle oil?
Dave ----
I thought they all got lubed from the axle oil?
Dave ----
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
Morning, Dave.
I have a Sterling 10.25. Yes, it gets lubed from the gear oil, but some old timers, when inspecting them, would put a coating of grease on them when they put them back together. Maybe I don't really need that?
I'm not sure the official way to go.
Thanks - Thomas
I have a Sterling 10.25. Yes, it gets lubed from the gear oil, but some old timers, when inspecting them, would put a coating of grease on them when they put them back together. Maybe I don't really need that?
I'm not sure the official way to go.
Thanks - Thomas
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Joined: Jan 2001
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From: Virginia
It's good practice to pre-lube the bearings when putting it back together. Especially new bearings. You can get away with not doing it with used bearings when you just pulled the axle, but it would not hurt to do it anyway. Just enough grease till the axle oil gets out there.
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
It's good practice to pre-lube the bearings when putting it back together. Especially new bearings. You can get away with not doing it with used bearings when you just pulled the axle, but it would not hurt to do it anyway. Just enough grease till the axle oil gets out there.
- Thomas
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Mountain Pass
Joined: Jul 2022
Posts: 133
Likes: 2
From: Michigan
Got my pushrods from Trend Performance out of Warren Michigan at lunch today!!! They had one set left already made in stock. Pretty happy about that.
The Comp Cams ones weren't going to be available until July sometime.
- Thomas
The Comp Cams ones weren't going to be available until July sometime.
- Thomas
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