Roller Rocker Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LT-102 · 06-28-2002, 05:03 PM

I debating about replacing my regular rockers with roller rockers or roller tip rockers. My engine curently runs about 300 hp and I'm looking for all the low dollar HP I can find. If I use roller rockers do I need to use the tall valve covers? Running about .480 lift and have been told the if you are runnning less than .500 lift that roller rockers would not be of real benifit, but roller tip rockers would be worthwhile. Need you guys opinions. Thanks

Big69C20 Toy · 06-28-2002, 05:11 PM

i was gonna but roller rockers for my BB but with my AC and all i dont have room for the tall valve covers and i think on a SB (assuming you have one) you need the tall ones too. i dont know how much HP you'll actually get out of the swap but i do say with the new roller tips the engine seems more fluent in the power, less snap to the motor when it wakes up, ya understand? i'd say get some good steel roller tip rockers as i've heard the full roller ones go out in 20k miles anyways. just my 2Cents

LT-102 · 06-28-2002, 05:32 PM

I'm sorry I forgot to say that it is a small block, 355 cid.

orange72 · 06-28-2002, 06:19 PM

i put some of comp cams roller tip rockers on mine. there just like stock just with a roller tip. get them cause they can add power and still use stock height valve covers plus they are a lot easier on your valve guides.

slam33 · 06-28-2002, 09:30 PM

Full roller rockers need tall covers.

67shortie · 06-29-2002, 11:22 AM

Well, roller rockers are not nessasarily low buck. I would not purchase anything less than a full quality rocker, read:Crane or Harland Sharpe etc. Otherwise the chance of rocker failure increases running a cheaper roller, and that could mean disaster when it fails.
You will not really see any HP gains just from changing from a stock rocker to a full roller (maybe 5HP your application), except from freeing up some friction and slightly cooler oil temps. The HP is usually made from the more accurate rocker ratio than the roller itself in most mild applications. Stock GM rockers are not the most accurate in this aspect. With only 480 lift, I would rather see you purchase the long slot Crane stamped rockers (very accurate) and put your money elsewhere like into the exhaust or fuel/ignition systems, this will gain you more HP and a quicker truck, torque increases. Just my $.02

Super Chevy · 06-29-2002, 01:07 PM

I`ll be running harland sharp 1.5 on my new blown 350...

06-28-2002, 05:03 PM	#1
LT-102 Registered User Join Date: Nov 2000 Location: Greenville, Oh USA Posts: 166	Roller Rocker Questions I debating about replacing my regular rockers with roller rockers or roller tip rockers. My engine curently runs about 300 hp and I'm looking for all the low dollar HP I can find. If I use roller rockers do I need to use the tall valve covers? Running about .480 lift and have been told the if you are runnning less than .500 lift that roller rockers would not be of real benifit, but roller tip rockers would be worthwhile. Need you guys opinions. Thanks

06-28-2002, 05:11 PM	#2
Big69C20 Toy Livin' it up. Join Date: Nov 2001 Location: Richland, MI Posts: 2,212	i was gonna but roller rockers for my BB but with my AC and all i dont have room for the tall valve covers and i think on a SB (assuming you have one) you need the tall ones too. i dont know how much HP you'll actually get out of the swap but i do say with the new roller tips the engine seems more fluent in the power, less snap to the motor when it wakes up, ya understand? i'd say get some good steel roller tip rockers as i've heard the full roller ones go out in 20k miles anyways. just my 2Cents __________________ -Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires.

06-28-2002, 06:19 PM	#4
orange72 Registered User Join Date: Sep 2000 Location: huntington,texas,united states Posts: 399	i put some of comp cams roller tip rockers on mine. there just like stock just with a roller tip. get them cause they can add power and still use stock height valve covers plus they are a lot easier on your valve guides. __________________ 1972 chevy long bed. Currently under construction!! Bagged, 383/700r4.

06-28-2002, 09:30 PM	#5
slam33 Registered User Join Date: Aug 2001 Location: Long Beach, Ca Posts: 1,432	Full roller rockers need tall covers. __________________ 71 LWB 350/350still working on it but it's going tp be sweet. www.geocities.com/stevemau/slam33page.html " TARGET=_blank>http://www.geocities.com/stevemau/slam33page.html?1004806705410 </A>

06-29-2002, 11:22 AM	#6
67shortie Green club Join Date: May 2002 Location: Central CA Posts: 1,059	Well, roller rockers are not nessasarily low buck. I would not purchase anything less than a full quality rocker, read:Crane or Harland Sharpe etc. Otherwise the chance of rocker failure increases running a cheaper roller, and that could mean disaster when it fails. You will not really see any HP gains just from changing from a stock rocker to a full roller (maybe 5HP your application), except from freeing up some friction and slightly cooler oil temps. The HP is usually made from the more accurate rocker ratio than the roller itself in most mild applications. Stock GM rockers are not the most accurate in this aspect. With only 480 lift, I would rather see you purchase the long slot Crane stamped rockers (very accurate) and put your money elsewhere like into the exhaust or fuel/ignition systems, this will gain you more HP and a quicker truck, torque increases. Just my $.02 __________________ 71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln

06-28-2002, 05:32 PM	#3
LT-102 Registered User Join Date: Nov 2000 Location: Greenville, Oh USA Posts: 166	I'm sorry I forgot to say that it is a small block, 355 cid.

06-29-2002, 01:07 PM	#7
Super Chevy Registered User Join Date: Feb 2001 Location: Ohio Posts: 1,025	I`ll be running harland sharp 1.5 on my new blown 350...



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