Solid roller lifters+valvetrain with hydraulic roller cam?
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Solid roller lifters+valvetrain with hydraulic roller cam? I've got a new in box hydraulic roller cam for ls1 (it's the old thunder racing t-rex spec exact grind, by comp cams)
Can I run this cam as a solid roller setup? Has anyone used a hydraulic roller ls1 comp cam and converted the valvetrain to solid?
The reason being is, id shift my old 232/595 head/cam 346 ls1 at 7200rpm and did 120mph in the 1/4 n/a in a heavy 3500+ lb car.
This t-rex size cam im fitting now in another 346 ls1, is a fair bit bigger than the above. So I think i can gain ET by shifting at high 7000rpm's, with all the other required engine upgrades to handle that rpm of course.
I've already got this hydraulic roller cam here, so im thinking of just running it as a solid roller.
Can I run this cam as a solid roller setup? Has anyone used a hydraulic roller ls1 comp cam and converted the valvetrain to solid?
The reason being is, id shift my old 232/595 head/cam 346 ls1 at 7200rpm and did 120mph in the 1/4 n/a in a heavy 3500+ lb car.
This t-rex size cam im fitting now in another 346 ls1, is a fair bit bigger than the above. So I think i can gain ET by shifting at high 7000rpm's, with all the other required engine upgrades to handle that rpm of course.
I've already got this hydraulic roller cam here, so im thinking of just running it as a solid roller.
You can do that and gain rpm stability with the solid lifter, however the lash now knocks some degrees of lobe timing off making the engine think it's similar to a mid 230's hydraulic. Perhaps you want that IDK, but you'll obviously need an adjustable rocker arm and if an all aluminum application then setting the cold lash about .006"-.008" should put you about .016" or so hot. You may want to consider the 10mm bolt upgraded YT stuff that Mamo has been pimping for more stability at the valve.
Thread Starter
11 Second Club
Joined: Jan 2003
Posts: 1,000
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You can do that and gain rpm stability with the solid lifter, however the lash now knocks some degrees of lobe timing off making the engine think it's similar to a mid 230's hydraulic. Perhaps you want that IDK, but you'll obviously need an adjustable rocker arm and if an all aluminum application then setting the cold lash about .006"-.008" should put you about .016" or so hot. You may want to consider the 10mm bolt upgraded YT stuff that Mamo has been pimping for more stability at the valve.
Thread Starter
11 Second Club
Joined: Jan 2003
Posts: 1,000
Likes: 134
i guess i can just buy a solid roller camshaft, or try this one as a solid setup and see what happens
push rods and valve springs are going to need to be top shelf ****...you skimp on any one part of that equation and the dyno graph will resemble diahrea.....
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The BBC guys were playing with solid rollers on a hydraulic roller lobes. You may find this interesting:
http://www.chevelles.com/forums/showthread.php?t=299946
I also found it interesting that one of the respected cam designers used solid roller lifters on a hydraulic lobe in his marine applications. It can reduce weight and create a stable valve train for sustained RPM.
http://www.chevelles.com/forums/showthread.php?t=299946
I also found it interesting that one of the respected cam designers used solid roller lifters on a hydraulic lobe in his marine applications. It can reduce weight and create a stable valve train for sustained RPM.
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Im running a liljohn stg3 turbo cam with solid lifters set at .008 valve lash and so far so good. valve train seems to be very quiet... will be doing some testing this coming month.