roller rockers
#1
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roller rockers
i just put in a lt1 cam and was wondering what roller rockers would work for me. the push rods are the same length and everything. would 1.6 roller rockers work? and what brand is a good one?
#3
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
1.6 rockers should be a good addition to an LT1 cam just make sure you have springs that can handle that lift and make sure they will clear the stock heads (assuming they are stock). If the car is street driven I think you'll want to look for some steel ones and not aluminum because the aluminum ones supposedly wear much faster, I've heard the Comp Magnums are good.
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Car: 2002 TT Corvette
Engine: 5.7L
Transmission: T56
Yes roller rockers are great. I would go with the proform full rollers from jegs. They are $170 I believe... needle bearing roller tipped and all that good stuff. I do not see how aluminum ones wear faster... where did u get this information from? go to members.fbody.com/camaroguy7 and check out the pics of my car. I have the rockers in a pic at the bottom. Those are older pics since I never got a chance to get pics of my new setup b4 I blew the car up... literally.
#5
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With aluminum it's not really wear it's fatigue you have to worry about. I don’t know how many miles people usually get out of a set of aluminum but I know that over time the aluminum is going to weaken. These things are going up and down thousands of time per minute which puts a lot of stress on weak aluminum. I’m currently a third year student in mechanical engineering I just did a tensile stress on aluminum the other day. Aluminum is a very ductile material which means it stretches so you might have to worry about that too. I would go with the Comp Cams Pro-Magnum Self-Aligning Roller Rocker Arms, 3/8" stud, 1.6 Ratio they are on sale right now over at thunder racing.
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Car: 89 RS
Engine: lo3
Transmission: 700R4 w/ B&M shift improver
Axle/Gears: 3.27 9-bolt posi
If you've got your stock heads you're going to want to make sure you get ones fore centerbolt valve covers. IIRC only comp cams and crane cams make 1.6 full on rollers.
-chuck
-chuck
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#8
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Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Go to www.enginekits.com and download their catalog. It's a PDF file so you'll need Acrobat Reader
In there you'll find a set of stamped steel 1.5 and 1.6 self-aligning roller tip rockers for ~$90. I have a friend using them on his '69 (not self-aligning) and they work great.
DO NOT use Proform rockers. I don't care if someone pays you to use them. They are very weak and they do break. Do an internet search for Proform and Break. You'll find a lot of results.
The problem with full roller rockers isn't whether they're aluminum or S/S, copper or brass, it's the needle bearing fulcrums that are the problem. They wear out. AAMOF, Comp Cams clearly advertises rebuild kits for even their ProMagnum rockers. If you want maintenance free rockers, stick with stamped steel w/roller tips.
Also, be aware that when you run 1.6 rockers, the pushrod is closer to the rocker and can bind up on the pushrod slot in the heads. Normally the slots have to be elongated, but if you check to make sure, you may not need to do that.
In there you'll find a set of stamped steel 1.5 and 1.6 self-aligning roller tip rockers for ~$90. I have a friend using them on his '69 (not self-aligning) and they work great.
DO NOT use Proform rockers. I don't care if someone pays you to use them. They are very weak and they do break. Do an internet search for Proform and Break. You'll find a lot of results.
The problem with full roller rockers isn't whether they're aluminum or S/S, copper or brass, it's the needle bearing fulcrums that are the problem. They wear out. AAMOF, Comp Cams clearly advertises rebuild kits for even their ProMagnum rockers. If you want maintenance free rockers, stick with stamped steel w/roller tips.
Also, be aware that when you run 1.6 rockers, the pushrod is closer to the rocker and can bind up on the pushrod slot in the heads. Normally the slots have to be elongated, but if you check to make sure, you may not need to do that.
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With high quality aluminum fatigue will not be a problem unless you run about 200,000 miles. AJ_92RS was right about them wearing out If i were you and you were on a budget i would pick up a set of these
http://www.flatlanderracing.com/scorpionrockers.html The Lt1 guys have very good luck with them. I actually just found out about them today and i saw some close up pics of them and i was impressed with the quality of the arms. I may just get a set over the pro - magnums.
http://www.flatlanderracing.com/scorpionrockers.html The Lt1 guys have very good luck with them. I actually just found out about them today and i saw some close up pics of them and i was impressed with the quality of the arms. I may just get a set over the pro - magnums.
Last edited by 85_sc; 02-10-2004 at 09:18 PM.
#10
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Car: 91 Camaro RS
Engine: 305 TBI
Transmission: WC T-5
Axle/Gears: 3.73
What is the difference between roller rockers and the stock rockers? Can any horsepower be gained by putting roller rockers on an engine with stock heads and cam?
#11
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by johnjm22
What is the difference between roller rockers and the stock rockers? Can any horsepower be gained by putting roller rockers on an engine with stock heads and cam?
What is the difference between roller rockers and the stock rockers? Can any horsepower be gained by putting roller rockers on an engine with stock heads and cam?
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Car: 1988 IROC CONVERTIBLE
Engine: 305 TPI PAXTON SUPERCHARGER & NOS
Transmission: T5
Hey ShiftyCapone
I have a 1998 IROC with a 305 TPI. What roller rockers would you recommend? Also could you provide a brand and part number.
Thanks,
Joey
I have a 1998 IROC with a 305 TPI. What roller rockers would you recommend? Also could you provide a brand and part number.
Thanks,
Joey
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by IrocZonNos
Hey ShiftyCapone
I have a 1998 IROC with a 305 TPI. What roller rockers would you recommend? Also could you provide a brand and part number.
Thanks,
Joey
Hey ShiftyCapone
I have a 1998 IROC with a 305 TPI. What roller rockers would you recommend? Also could you provide a brand and part number.
Thanks,
Joey
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
actualy, the pro-mags are lighter than the alum ones. because it takes quite a bit less material.
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Dewey316
actualy, the pro-mags are lighter than the alum ones. because it takes quite a bit less material.
actualy, the pro-mags are lighter than the alum ones. because it takes quite a bit less material.
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
the bearing used will make a big diffrence also, were the weighting them with or without the fulcrum bearing?
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Dewey316
the bearing used will make a big diffrence also, were the weighting them with or without the fulcrum bearing?
the bearing used will make a big diffrence also, were the weighting them with or without the fulcrum bearing?
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
yeah, but like you mentioned, the location of the mass is what makes the diffrence. truth is, it isn't the mass of the object, it is the moment of inertia, as basicly you are dealing with a rotating mass.
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Car: '90 RS
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Transmission: Magnum T56
Originally posted by Dewey316
yeah, but like you mentioned, the location of the mass is what makes the diffrence. truth is, it isn't the mass of the object, it is the moment of inertia, as basicly you are dealing with a rotating mass.
yeah, but like you mentioned, the location of the mass is what makes the diffrence. truth is, it isn't the mass of the object, it is the moment of inertia, as basicly you are dealing with a rotating mass.
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
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Axle/Gears: 3.42 Eaton Posi, 10 Bolt
come on shifty, aren't you a ME major?
which takes less energy, 10lbs on a 50ft pole, or 50lbs on a 1ft pole
the moment of intertia is what you really need to look at, although you are right this point is VERY mute, the large gain comes for the fulrcum bearing.
which takes less energy, 10lbs on a 50ft pole, or 50lbs on a 1ft pole
the moment of intertia is what you really need to look at, although you are right this point is VERY mute, the large gain comes for the fulrcum bearing.
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Dewey316
come on shifty, aren't you a ME major?
which takes less energy, 10lbs on a 50ft pole, or 50lbs on a 1ft pole
come on shifty, aren't you a ME major?
which takes less energy, 10lbs on a 50ft pole, or 50lbs on a 1ft pole
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