Roller Rockers, is there any gains from using them?
Thread Starter
Drifting
Joined: Feb 2003
Posts: 1,453
Likes: 1
From: Iowa City, IA
Roller Rockers, is there any gains from using them?
I'm building my frist 427. I wanted to know if any one has been getting any gains from using roller rockers. I don't have the stock ones so I have to buy some. I was offered new Yella Terra 1.7 for 350. If not them what would you buy? Thanks
Racer
Joined: Feb 2002
Posts: 313
Likes: 0
From: HOUSTON TX
Re: Roller Rockers, is there any gains from using them? (extremecorvette)
I am ruuning Jesel on my 427
Don't know if there were any gains, but i feel a lot more secure about having them in the valve train .
I also believe that brands are personal preferance
my .02
Don't know if there were any gains, but i feel a lot more secure about having them in the valve train .
I also believe that brands are personal preferance
my .02
Uneducated autodidact
Joined: Feb 2001
Posts: 5,413
Likes: 253
From: West of the Sabine, Texas
Re: Roller Rockers, is there any gains from using them? (extremecorvette)
I've been looking at the "new and improved" stock rockers from Fichtner...anyone using them? They are reasonable priced, and were redesigned from the original ones.
Melting Slicks
Joined: Oct 2002
Posts: 2,855
Likes: 0
Re: Roller Rockers, is there any gains from using them? (extremecorvette)
Throttle response is better and I don't know about them other than crane i used the 1.88's on my H/C motor and had good gains, the cam was larger in my stroker so I have their 1.72's--the kits also come with the good studs and pushrods etc so the overall package is a good one to have and probably 5rwhp on the same size just from removing friction from the equation--
Advanced
Joined: Feb 2004
Posts: 60
Likes: 0
From: Santa Maria CA
Re: Roller Rockers, is there any gains from using them? (NEPTUNEBILL)
Throttle response is better and I don't know about them other than crane i used the 1.88's on my H/C motor and had good gains, the cam was larger in my stroker so I have their 1.72's--
:confused:
[Modified by 99 MagRedVette, 4:46 PM 4/5/2004]
Pro
Joined: Sep 2003
Posts: 731
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From: Calgary Alberta
Re: Roller Rockers, is there any gains from using them? (99 MagRedVette)
If you're not planning on a getting a monster cam anytime soon, and are planning to keep the engine internals stock you might as well go the higher ratio and get a few extra horsepower (10 hp seems to be the average gain).
The only problem with increasing your ratio is that you have to get better springs if your engine is an LS1. The LS6 springs are fine, but the LS1's are weak. Either way better rockers, push rods, and springs will provide extra horsepower, and will also allow you to increase your rev limiter without having to worry about your valvetrain.
The only problem with increasing your ratio is that you have to get better springs if your engine is an LS1. The LS6 springs are fine, but the LS1's are weak. Either way better rockers, push rods, and springs will provide extra horsepower, and will also allow you to increase your rev limiter without having to worry about your valvetrain.
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Drifting
Joined: May 1999
Posts: 1,580
Likes: 1
From: Shelbyville KY
Re: Roller Rockers, is there any gains from using them? (frodo84)
I've been looking at the "new and improved" stock rockers from Fichtner...anyone using them? They are reasonable priced, and were redesigned from the original ones.
Uneducated autodidact
Joined: Feb 2001
Posts: 5,413
Likes: 253
From: West of the Sabine, Texas
Re: Roller Rockers, is there any gains from using them? (AllCammedUp)
I don't have a link, you can go the Fichtner website though and use this part number....10214664. That is the old part number but it was upgraded in April of 2003. They had a great price on them too....about $15 a piece. Unless I can find something that is a LOT better for a reasonable price, I will probably go with these. JMO....
Thread Starter
Drifting
Joined: Feb 2003
Posts: 1,453
Likes: 1
From: Iowa City, IA
Re: Roller Rockers, is there any gains from using them? (frodo84)
So back to the orginal question. Is it worth the extra money for the better Roller Rockers or just buy these $240 for the Fichtner or $350 for the Yella Terra
[Modified by extremecorvette, 8:44 PM 4/6/2004]
[Modified by extremecorvette, 8:44 PM 4/6/2004]
Le Mans Master
Joined: Oct 2000
Posts: 6,362
Likes: 30
From: Oak Harbor WA
Re: Roller Rockers, is there any gains from using them? (extremecorvette)
I did a search of the archives a couple weeks ago about roller rockers to see what was what from others here. General consensus was they are not really worth it. Lot of money for very little power. The only issue I can think of with high ratio rockers is the eventual side loading of the valve guides. It seems that a slightly larger cam cost about the same amount of money as R'R's. But R'R's are easier to DIY.
Uneducated autodidact
Joined: Feb 2001
Posts: 5,413
Likes: 253
From: West of the Sabine, Texas
Re: Roller Rockers, is there any gains from using them? (extremecorvette)
I've been trying to figure out the best path on this.....the original rockers were prone to coming apart with needle bearings getting loose in the engine...for that reason alone since I am doing a H/C job I will replace them with the better design. I can't find any data to support an increase in HP commensurate with the cost of YTs or others at this HP level....just my opinion once again of course.
Melting Slicks
Joined: Mar 2001
Posts: 2,871
Likes: 0
From: Oceanside, Ca. Ca.
Re: Roller Rockers, is there any gains from using them? (frodo84)
I've been trying to figure out the best path on this.....the original rockers were prone to coming apart with needle bearings getting loose in the engine...for that reason alone since I am doing a H/C job I will replace them with the better design.
One half of the exhaust valve stems were worn down badly, and were in my view the root cause of this failure. I have removed the heads and sent them to TPIS for evaluation / replacement.
I have darn near inspected and or replaced all the MMS parts that they had installed. This I believe may be the last time bomb I have to deal with.
After evaluating this, as of now, I still plan to replace them with another set of stock rockers. ( I have a .566" lift cam). LPE has many motors out there with +550 rwhp using these stock rockers.
[Modified by bruce1, 8:47 PM 4/6/2004]
[Modified by bruce1, 8:49 PM 4/6/2004]
[Modified by bruce1, 8:50 PM 4/6/2004]
Uneducated autodidact
Joined: Feb 2001
Posts: 5,413
Likes: 253
From: West of the Sabine, Texas
Re: Roller Rockers, is there any gains from using them? (bruce1)
Thanks for the input, Bruce....the conclusion I have reached is that the (new and improved) stock rocker will be fine for MY application (stg II heads, 224 cam). I'm sure that more expensive roller rockers would do better at a higher rpm and gain a few more HP but for a street driven car with the mods as above I don't see that the gains for roller or roller shaft rockers are worth the cost.
Melting Slicks
Joined: Mar 2001
Posts: 2,871
Likes: 0
From: Oceanside, Ca. Ca.
Re: Roller Rockers, is there any gains from using them? (frodo84)
Thanks for the input, Bruce....the conclusion I have reached is that the (new and improved) stock rocker will be fine for MY application (stg II heads, 224 cam).
Regards:
Bruce1
Melting Slicks
Joined: Mar 2001
Posts: 2,871
Likes: 0
From: Oceanside, Ca. Ca.
Re: Roller Rockers, is there any gains from using them? (frodo84)
What do you think about using the stock rockers with my cam...224 with .581 lift?
If I were you, I would ask the people at LPE for more information on this.
I know they have history to draw on.
Bruce1