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SB to BB .904 Roller Lifter interchangability question

Posted By: Streetwize

SB to BB .904 Roller Lifter interchangability question - 12/24/17 09:35 PM

I'm thinking about switching to a solid roller from a HR in one of my BB motors.

I have a like new (maybe 10 passes) of the Morel Small block solid lifters I ran approx 7200RPM in my 414 and I think other than the small blocks having a V notch in the link bar they are the same lifter. I test fitted a couple pairs in an old 440 I have and they seem to clear fine even at the extreme of the link bar travel. I know you can't put the straight link bar BB style in a small block (since the valley has little nubs sticking up) but it seems there would be no problem at all going the other way from SB to BB. And AMC's I believe are the same as BB (straight link) as well except AMC's pressure feed the rockers through the pushrods and have a bleed hole in the lifter cup for that purpose.

The Morels have a long (HR style) body so when I ran it on the smallblock I had to use a much shorter pushrod, But on an RB the longer body might actually be an advantage.

Am I off base? I's there another difference I am not aware of?

I posted on Q&A but this is probably whereI'll get a quicker answer
Posted By: Cab_Burge

Re: SB to BB .904 Roller Lifter interchangability question - 12/25/17 01:35 AM

If they fit and check okay I would run them up
Posted By: boatracer572

Re: SB to BB .904 Roller Lifter interchangability question - 12/25/17 02:35 AM

I don't know what the lifter center to center on a small block is: (BB=1.800)might want to check that......
Posted By: @#$%&*!

Re: SB to BB .904 Roller Lifter interchangability question - 12/25/17 04:55 AM

iagree
Don't assume the tie bars have enough spacing. I test fitted a set of SB rollers I have in a BB and it didn't look like they'd work because of it.
Posted By: Streetwize

Re: SB to BB .904 Roller Lifter interchangability question - 12/25/17 05:24 AM

I set the small block set in a big block looks to me there's plenty of free movement.
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