ROLLER ROCKER ARMS ???

Quik 64 1/2 · 02-29-2000, 09:39 AM

Does anyone know what kind of performance gains, if any, should I expect from a good set of roller rocker arms on my 289?

red · 02-29-2000, 03:09 PM

It depends on the cam you get / how many R's you want to turn.
You can go really wild with roller rockers but you sacrifice smooth idle.
-JON

PoppyJim · 02-29-2000, 10:26 PM

You will notice NO difference in power if just the stock rockers were replaced with roller rockers.You have to change the cam with a higher performance one and then the roller rockers would be worth it.A roller cam like late model 5.0s have would make a difference,thats parts of the reason newer 302s run better than old ones,but to change an older engine to roller cam is kind of expensive.

Quik 64 1/2 · 02-29-2000, 10:44 PM

I already have a hydraulic lift cam by Cam Dynamics on my car. I'm not sure of the specs because I didn't get it brand new however, it begins to make power from 2800 on up. Would Roller Rocker Arms be worth the investment?

PoppyJim · 02-29-2000, 10:58 PM

Probably wouldn't hurt to try.I have Comp Cam Magnum roller tip rockers in both my 351W and 289 and they work good.The full roller rockers with roller fulcrum and tip would be overkill on a mild motor and more money.Don't expect to feel much difference with either one though.If you go with the Magnum rockers make sure you get the right ones.They make a "rail" type and non-"rail" type.Good luck.

------------------
'62Falcon 351W
'58 Morris Minor 289/C4
"Just Falcon Around"

Dark Knight · 03-01-2000, 01:28 PM

you MIGHT want to get a set of 1.7's for the exhaust, and 1.6 for the intake... will help with the poor flowing exhaust on small block heads.

------------------
84 convt,'95 302, performer
3.55's, underdrives shorties
14.49@94,2.03 60ft
and a '68 stang that WAS nasty ;-)
MY ride
MY ride2

k.s. · 03-05-2000, 10:44 PM

all a other than stk rocker does is change the geometry of the valve train,in other words it will give you a slightly larger cam by changing ratio instead of having to change cams, try the 1.6/1.7 trick. you have to remember that the exhaust is already at a disadvantage because of smaller valve and port

k.s. · 03-05-2000, 10:47 PM

also,sounds like you have a healthy came if it doesnt make power till 2800 rpm,do you have manual or auto trans,if auto, do you have a stall converter?

Quik 64 1/2 · 03-06-2000, 04:20 PM

I have a manual close ratio top loader with 4:11 gears in the rear. Do you have any extra advice??

k.s. · 03-07-2000, 12:45 AM

what all have you done to the engine? do you know what cam you have?

Quik 64 1/2 · 03-07-2000, 02:27 PM

As far as the specs on the cam, I'm not sure because it was one my dad had layin' around in the garage. As for the engine, I have an Edelbrock 4v, Edelbrock manifold, K&N w/ 1"carb spacer, 160deg. thermo., flo kool water pump, tri y headers, and 2 1/2" exh.w/Hpipe

02-29-2000, 09:39 AM	#1
Quik 64 1/2 Registered Member Join Date: Feb 2000 Location: Tampa Florida Posts: 50	ROLLER ROCKER ARMS ??? Does anyone know what kind of performance gains, if any, should I expect from a good set of roller rocker arms on my 289?

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02-29-2000, 03:09 PM	#2
red Registered Member Join Date: Sep 1998 Location: Millburn, NJ Posts: 310	It depends on the cam you get / how many R's you want to turn. You can go really wild with roller rockers but you sacrifice smooth idle. -JON

02-29-2000, 10:26 PM	#3
PoppyJim Registered Member Join Date: Nov 1999 Location: So. Cal. Posts: 16	You will notice NO difference in power if just the stock rockers were replaced with roller rockers.You have to change the cam with a higher performance one and then the roller rockers would be worth it.A roller cam like late model 5.0s have would make a difference,thats parts of the reason newer 302s run better than old ones,but to change an older engine to roller cam is kind of expensive.

02-29-2000, 10:44 PM	#4
Quik 64 1/2 Registered Member Join Date: Feb 2000 Location: Tampa Florida Posts: 50	I already have a hydraulic lift cam by Cam Dynamics on my car. I'm not sure of the specs because I didn't get it brand new however, it begins to make power from 2800 on up. Would Roller Rocker Arms be worth the investment?

02-29-2000, 10:58 PM	#5
PoppyJim Registered Member Join Date: Nov 1999 Location: So. Cal. Posts: 16	Probably wouldn't hurt to try.I have Comp Cam Magnum roller tip rockers in both my 351W and 289 and they work good.The full roller rockers with roller fulcrum and tip would be overkill on a mild motor and more money.Don't expect to feel much difference with either one though.If you go with the Magnum rockers make sure you get the right ones.They make a "rail" type and non-"rail" type.Good luck. ------------------ '62Falcon 351W '58 Morris Minor 289/C4 "Just Falcon Around"

03-01-2000, 01:28 PM	#6
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	you MIGHT want to get a set of 1.7's for the exhaust, and 1.6 for the intake... will help with the poor flowing exhaust on small block heads. ------------------ 84 convt,'95 302, performer 3.55's, underdrives shorties 14.49@94,2.03 60ft and a '68 stang that WAS nasty ;-) MY ride MY ride2

03-05-2000, 10:44 PM	#7
k.s. Registered Member Join Date: Sep 1999 Location: rowlett tx,usa Posts: 18	all a other than stk rocker does is change the geometry of the valve train,in other words it will give you a slightly larger cam by changing ratio instead of having to change cams, try the 1.6/1.7 trick. you have to remember that the exhaust is already at a disadvantage because of smaller valve and port

03-05-2000, 10:47 PM	#8
k.s. Registered Member Join Date: Sep 1999 Location: rowlett tx,usa Posts: 18	also,sounds like you have a healthy came if it doesnt make power till 2800 rpm,do you have manual or auto trans,if auto, do you have a stall converter?

03-06-2000, 04:20 PM	#9
Quik 64 1/2 Registered Member Join Date: Feb 2000 Location: Tampa Florida Posts: 50	I have a manual close ratio top loader with 4:11 gears in the rear. Do you have any extra advice??

03-07-2000, 12:45 AM	#10
k.s. Registered Member Join Date: Sep 1999 Location: rowlett tx,usa Posts: 18	what all have you done to the engine? do you know what cam you have?

03-07-2000, 02:27 PM	#11
Quik 64 1/2 Registered Member Join Date: Feb 2000 Location: Tampa Florida Posts: 50	As far as the specs on the cam, I'm not sure because it was one my dad had layin' around in the garage. As for the engine, I have an Edelbrock 4v, Edelbrock manifold, K&N w/ 1"carb spacer, 160deg. thermo., flo kool water pump, tri y headers, and 2 1/2" exh.w/Hpipe