lifters hyd or solid?
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Junior User
Joined: Oct 2002
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From: littleton
lifters hyd or solid?
in a 73 390 fe what lifter is used. I am thinking hydrolics but i could be wrong. also what is the big difference in the two and is one better to run over the other?
s
s
Post Fiend
Joined: Feb 2001
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From: Missouri
The 73 blocks was most definitely a hydraulic block. You can run solids but they require a modification to the block and need adjusted regularly. Solid lifters allow for more aggresive ramp rates and generate a little more power all the way across the band.
Senior User
Joined: Feb 2003
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From: South Carolina
Originally posted by Ratsmoker
You can run solids but they require a modification to the block and need adjusted regularly.
You can run solids but they require a modification to the block and need adjusted regularly.
Post Fiend
Joined: Feb 2001
Posts: 6,624
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From: Missouri
I don't believe the hydraulic rollers do. The solid rollers might. you have to plug one of the oil galleries. The process is outlined at www.gessford.com if you can read it. When I get back from Korea I am going to acquire a 390 block and take good pictures of this process and post them on my website. It will leave no doubts as to how this is done.
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Joined: Jan 2003
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From: SoCal
Roller cams require that the lifters be indexed to the cam (can't be allowed to spin in the hole). Roller cams are also made of steel and require a steel distributor gear. Don't have any experience with the FE's, but just put together a roller 351W. The roller lifters I've seen it the catalog appear to be linked in sets of two to prevent rotation. This should not require a block modification but there may be clearance issues. Also the pushrods will be shorter because the roller adds to the height of the lifter. My '58 332 had factory hydraulic lifters. The switch to solid required no block mods but had to add adjustable rockers.
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