Boss 429 broken roller lifter

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Re: Boss 429 broken roller lifter

Post  Babbit Bearings on March 9th 2018, 7:37 pm

Any update on the lifter issue? After years of chevy's I am interested in building a Boss engine for my car that will get a lot of street miles, probably including drag week.

Thanks
Craig

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boss engine

Post  hbstang on March 9th 2018, 8:56 pm

you wont have any major issues if you run high quality parts.the problem the OP had is the aftermarket block has an interferance with the lifter tie bars as they are no longer detachable.use the crower lifters,they are good quality and can be bought with the bushings instead if needle bearing.
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Re: Boss 429 broken roller lifter

Post  BOSS 429 on March 9th 2018, 11:25 pm

Doesn't matter what lifter you use,builder needs to check clearance under z-bar,or link bar, I just did an svo block wedge same problem,bar hit just before full lift,have seen this on all after market blocks with different brand lifters. factory blocks not a prob

the base circle of the cam is a big part of this at times.
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