Salutations from C3 land
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Team Owner
Joined: Apr 2002
Posts: 62,198
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From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Salutations from C3 land
I figured you guys here in C4 would have the most experience with later 1 peice rear main seal blocks with OE hyd rollers.
On a lark I put in a hyd roller cam into the block and dropped in a set of Crower solid rollers I had. The link bar almost seems to rest on pads for the lifter retainers. I know crane makes special solid rollers for use with the spider and retainers. Just trying to avoid buying them. It looks like at best I would need a regular base circle cam, at worst the lifter isnt making it to the camshaft.
I am working on a 396 SBC with Dart 200 Pro 1 Platinum heads, and was thinking about the smallest Crane Street roller with the small base circle (232 at .05 on the intake and I forget what the exhaust was).
On a lark I put in a hyd roller cam into the block and dropped in a set of Crower solid rollers I had. The link bar almost seems to rest on pads for the lifter retainers. I know crane makes special solid rollers for use with the spider and retainers. Just trying to avoid buying them. It looks like at best I would need a regular base circle cam, at worst the lifter isnt making it to the camshaft.
I am working on a 396 SBC with Dart 200 Pro 1 Platinum heads, and was thinking about the smallest Crane Street roller with the small base circle (232 at .05 on the intake and I forget what the exhaust was).
Drifting
Joined: Mar 2008
Posts: 1,756
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From: Wichita KS
232 degrees open measured @ .05 lift is very mild duration. But it doesn't tell the whole story.... If this is a small base circle cam, I'll bet it has close to .600in lift. Am I wrong?
I understand your problem. The cam is a hydraulic roller and you say you fit "solid roller lifters". There is a difference between solid and hydraulic camshaft ramp profiles. Even with roller cams. I'm not saying this direction wouldn't work if the lifters were long enough to reach. But you are going to need to use different lifters. There's about 50hp difference between hydraulic lifters & solids (identical cams) Small base circle cams require a different design roller lifter. Instead of a pivot link preventing the lifter from rotating sideways, a flat-sided retention plate fits over the top of the lifters with a spring plate to hold them in place. Crane should have them. If you can't find anyone to speak with at Crane. Give Lunati a call and they should be able to help you out.
I understand your problem. The cam is a hydraulic roller and you say you fit "solid roller lifters". There is a difference between solid and hydraulic camshaft ramp profiles. Even with roller cams. I'm not saying this direction wouldn't work if the lifters were long enough to reach. But you are going to need to use different lifters. There's about 50hp difference between hydraulic lifters & solids (identical cams) Small base circle cams require a different design roller lifter. Instead of a pivot link preventing the lifter from rotating sideways, a flat-sided retention plate fits over the top of the lifters with a spring plate to hold them in place. Crane should have them. If you can't find anyone to speak with at Crane. Give Lunati a call and they should be able to help you out.
Thread Starter
Team Owner
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Thanks.
I just wanted to see if the lifters fit at all. Only had a Hyd. Roller cam, I thought the base circles would be the same.
I just wanted to see if the lifters fit at all. Only had a Hyd. Roller cam, I thought the base circles would be the same.
Last edited by Guru_4_hire; Jul 17, 2008 at 02:11 PM.
