Solid roller lifter or hydraulic roller lifter
12-12-2011, 02:22 PM
#1
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Solid roller lifter or hydraulic roller lifter I have a Comp Cams #54-428-11 and was wondering if I could switch from the hydraulic roller lifter to a solid roller lifter and not do any damage to anything? I have a built 347 from Xtreme Horsepower. It has a GM stock crankshaft, Eagle H-beam 6.125" connecting rods with ARP 8740 rod bolts, forged Mahle pistons, Clevite77 race bearings, ARP main bolts. My heads are 241 ported.
12-12-2011, 06:26 PM
#2
You will want to swap in a cam designed for solid roller lifters.
And you'll have trouble fitting suitable springs to 241 heads without having the spring pockets machined to accept larger diameter seats.
And you'll have trouble fitting suitable springs to 241 heads without having the spring pockets machined to accept larger diameter seats.
12-12-2011, 06:57 PM
#4
Comp cams has a really great short travel hydraulic lifter that drops right in place for an LS/Chevy SB. I've had great luck with some higher revving LS Engines and I sell a ton of them.
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12-12-2011, 08:23 PM
#8
While advances in cam profile and lifter design have allowed very radical hydraulic designs, a solid roller will always allow the most extreme lobes and quick ramp speeds, which require heavy spring pressures that would collapse a hydraulic lifter. While many can make great power with a hydraulic, the solid ain't dead yet!
12-12-2011, 09:22 PM
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I have the Comp Cams Magnum 1.75:1 roller rockers along with the magnum push rods. The valve springs I have in the heads now can go up to .600 I have no clue to if the hydraulic roller lifters are stock or not. I reused them from when my ls1 blew a rod on my move from texas to missouri (ARMY)
12-12-2011, 09:34 PM
#10
Well the ones I'm talking about are these... 875-16:
http://www.skspeed.com/ProductDetail...uctID=C5687516
http://www.skspeed.com/ProductDetail...uctID=C5687516
Here; http://www.compperformancegroupstore...Category_Code=
IF it were still back in the days of your Chevelle, I would agree with you. I was taught that solids were the ONLY way to go since I started learning about hotrods as a teen. But over the years I have seen first hand the differences. Solids have their place; .700+ lift 260+ duration drag race only cars which 99% of people do not have.
For most forum users a solid roller is not a good match for their combination, and wont make much more power than an equivalent present day lobed hyd roller. It just gives people a lot more to screw up, and they do a good job of it on their own with out having to set lash. Ive run a 230s/240s solid roller setup before and it didnt make any more power than the equivalent hyd roller. Solids do help with valtrain stability but again todays valetrain components avaliable to the public can work very well when properly matched.
12-13-2011, 09:35 AM
#11
While advances in cam profile and lifter design have allowed very radical hydraulic designs, a solid roller will always allow the most extreme lobes and quick ramp speeds, which require heavy spring pressures that would collapse a hydraulic lifter. While many can make great power with a hydraulic, the solid ain't dead yet!
12-13-2011, 10:02 AM
#12
Ahhh those race lifters posted above are indeed awesome. I don't sell them as much but our engine shop orders a few in at a time for LS builds they do.
Closest you can get to a Solid without actually going solid.
And I personally love Solid Roller for certain applications. I just built a Gen 1 SBC 383 that made an easy 578hp on pump gas with a smaller solid roller and AFR 210s. With the stud girdle the top end is dead stable.
Closest you can get to a Solid without actually going solid.
And I personally love Solid Roller for certain applications. I just built a Gen 1 SBC 383 that made an easy 578hp on pump gas with a smaller solid roller and AFR 210s. With the stud girdle the top end is dead stable.
12-13-2011, 05:03 PM
#13
To answer the OP's question most likely not. There are usually special "ramps" designed into solid profiles that are less aggressive initially to take up slack then the solid profile can become far more aggressive. Hydraulic profiles don't need those "ramps" because the lifter takes up the slack. It would be best to call Comp but you need to get the right person who knows what they're talking about.
12-13-2011, 07:21 PM
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12-14-2011, 05:59 PM
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I have a Comp Cams #54-428-11 and was wondering if I could switch from the hydraulic roller lifter to a solid roller lifter and not do any damage to anything? I have a built 347 from Xtreme Horsepower. It has a GM stock crankshaft, Eagle H-beam 6.125" connecting rods with ARP 8740 rod bolts, forged Mahle pistons, Clevite77 race bearings, ARP main bolts. My heads are 241 ported.
