Thread: street solid roller cam
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10-16-2010 03:07 AM #1
street solid roller cam
Hi guys,
is there such a thing as a mild solid roller cam for a 454 BBC??
I am looking to replace my hydraulic roller (230/236 @ .050", .547" lift, 112 deg lobe centers) with a similar solid roller, so I can get a few more revs out of it - currently 5500rpm before valve float.
Engine is 454 (bored + .030") 9.8:1 compression, Edelbrock Performer RPM heads, Performer RPM intake, Chuck Nytten Holley 750 double-pumper (flows 890cfm). 3000lb car with Tremec TKO600 5-speed manual trans. This is a street car, with the occasioanal 1/4 mile squirt, so I need something tractable.
Any recommendations, anyone?
Thanks,
Chris
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10-16-2010 05:19 AM #2
yep.. i put small roller cams in bbc just call who grinds your cams. over the years i used some .Crower has some smaller cams . Erson cams. isky . Howards . that cam is very tame i go up to 600 to 660 lift and more dur 236/242 or abit more 242/250 if you going to Buzz it it can stay on 112 last one was 242/250 581/573 lc112# 01475 old crower in a 454 they do not show the number in there new book heres a erson that i used 246/254 629/629 on 108 you may or may not want to move the lc with a stick i would them are just some i have used there manyLast edited by pat mccarthy; 10-16-2010 at 07:48 AM.
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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10-16-2010 12:52 PM #3
Thanks, Pat. I don't want to go higher than .547 lift, as I know I have piston clearance with that figure.
I've been reading some scary stuff online about solid rollers not lasting on the street. Some say you can't let the engine idle below 1000rpm or the lobes could go bad with a solid roller! Any comments??
Chris
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10-16-2010 06:12 PM #4
them cam s i gave you numbers on fit the stock speed pro piston with a stock head and 219 valve .there s is more to it then just lift i have HYD 620 rollers with 238 /246 @050 on 112 clear with PV but pull it in on a 108 and 246/252 then it may not fit on your pistons but that cam in a solid roller did clear on a speed pro hiper 496 shelf piston. i do not think i fly cut them . yep sure i will add my two cents on lifters you are talking low lift and low spring lbs . go with a good roller like a hippo crower .PBM. erson .howards . crane pro .ANY THING BUT COMP .there POS seen them fail faster then most. they may have it work out now you feel lucky ?? .all the lifters that are hippo but crowers are made by the same company and are very good they will last for what your doing .you can put abit more lift to it. 600 with running lash will be about 574 that is as small as i would go. your taking hi rpm bbc. they like the valves to open hell we are driving 740+ lift rollers on the street nothing like a big block getting AIRLast edited by pat mccarthy; 10-16-2010 at 06:38 PM.
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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10-17-2010 05:09 AM #5
Thanks, Pat - food for thought! I had forgotten that the timing of valve opening/closing events can affect clearance with the piston, not just valve lift itself. I have forged TRW L2399F pistons with .095" (13.8cc) dome on Manley H-beam rods.
A couple of questions - what do you mean by hippo roller?? Do you mean high performance? Would you advise a steel billet cam and the best roller lifters I can find? I've heard about a company that makes roller lifters without needle roller bearings, just plain bearings like on a crankshaft.
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10-17-2010 06:32 AM #6
Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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10-17-2010 10:03 AM #7
Thanks for explaining that, Pat. I've just looked at Lunati pressure-fed solid rollers and they cost quite a few more $$ - oh well, c'est la vie!
Another question (sorry!) - what's your feeling about dual-pattern as opposed to single-pattern cams? I've read that dual pattern work better to compensate for a weaker-flowing exhaust side. I've got Edelbrock Performer RPM heads and pretty free-flowing equal-length 4 into one headers and 3" main pipes with pretty unrestrictive mufflers. Would my engine benefit from a single-pattern cam, do you think?
Lunati have a solid-lifter cam 304/304 (244/244 @ .050") 110 lobe centres and .595/.595" lift, which looks interesting. Part #50200LUN.
Chris
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10-17-2010 10:18 AM #8
well i used some of both single and dual pattens for low the mid rpms singles work ok for hi rpms and Nos i have not used them . i still like to see some more dur on the EX side . so there not all ways my first pickIrish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
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10-17-2010 01:39 PM #9
Well, that's more or less decided me on the Crower #01475 you suggested. With the 112 lobe center and .554"/.545" lift (factoring in the lash) there will be no danger of valve-piston contact, as it's near the same as the hydraulic roller I've got in there now.
With the lighter solid-roller lifters it should be capable of buzzing to 6000 occasionally?
With the current cam it made 483hp at 5500 (limited by valve float) and 500ft lb at 4600. I guess the solid roller will maybe just top the magic 500hp....
I wanted to complain about this NZ slang business, but I see it was resolved before it mattered. LOL..
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