Question about roller lifters...
Thread Starter
Instructor
Joined: Jul 2004
Posts: 245
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Question about roller lifters...
I have what might be a stupid question, but here it goes.
I just picked up a 1999 5.7 (350) short block for free. It's nice having a good friend that owns a repair shop.
The numbers on the block show it to be used in Vortech trucks, Gen. 1 crate motors, and ZZ4's. It has the factory roller lifters with the hold down hardware intact.
The cylinder walls are in great shape with no ridge at the top of the bores. The compression was 150-160 in all cylinders. I'm thinking of building this shortblock in the future.
I'm old school and have never had an engine with roller lifters. My question is can the roller lifters be used with a different cam or do you have to change the lifters when you install a new cam like you do with a flat tappet design?
I'm thinking of using this shortblock to build a low budget bracket motor for a S-10 that we just picked up to build into a bracket racer.
Thanks,
Jeff
I just picked up a 1999 5.7 (350) short block for free. It's nice having a good friend that owns a repair shop.
The numbers on the block show it to be used in Vortech trucks, Gen. 1 crate motors, and ZZ4's. It has the factory roller lifters with the hold down hardware intact.
The cylinder walls are in great shape with no ridge at the top of the bores. The compression was 150-160 in all cylinders. I'm thinking of building this shortblock in the future.
I'm old school and have never had an engine with roller lifters. My question is can the roller lifters be used with a different cam or do you have to change the lifters when you install a new cam like you do with a flat tappet design?
I'm thinking of using this shortblock to build a low budget bracket motor for a S-10 that we just picked up to build into a bracket racer.
Thanks,
Jeff
Thread Starter
Instructor
Joined: Jul 2004
Posts: 245
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Originally Posted by cuisinartvette
As long as the are not worn out you can reuse them. No break in necessary like flat tappets. Once you go roller, youll never go back. 
I was hoping that was the case.
Jeff
Le Mans Master
Joined: Sep 2001
Posts: 7,739
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From: Unreconstructed, South Carolina
Jeff:
Not all vortec blocks have a fully machined mounting boss for mechanical fuel pump ... yours may or may not be ready for mechanical pump ... won't matter if you run electric pump. Some shops can complete the machinework.
As said, if vortec lifters in good shape ... you can reuse on most any roller cam.
Not all vortec blocks have a fully machined mounting boss for mechanical fuel pump ... yours may or may not be ready for mechanical pump ... won't matter if you run electric pump. Some shops can complete the machinework.
As said, if vortec lifters in good shape ... you can reuse on most any roller cam.
Thread Starter
Instructor
Joined: Jul 2004
Posts: 245
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Originally Posted by jackson
Jeff:
Not all vortec blocks have a fully machined mounting boss for mechanical fuel pump ... yours may or may not be ready for mechanical pump ... won't matter if you run electric pump. Some shops can complete the machinework.
As said, if vortec lifters in good shape ... you can reuse on most any roller cam.
Not all vortec blocks have a fully machined mounting boss for mechanical fuel pump ... yours may or may not be ready for mechanical pump ... won't matter if you run electric pump. Some shops can complete the machinework.
As said, if vortec lifters in good shape ... you can reuse on most any roller cam.
Thanks for the information,
Jeff
