Are rocker arms worth the money
09-19-2009, 09:24 PM
#1
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Are rocker arms worth the money im going with a new cam from comp
Duration:281/283
Duration @ .050" Lift:232/234
Valve Lift:595/598
Lobe Lift:35/352
and i was looking at new rocker arms the 13755-kit from comp ! do they help out with hp or is it just to strenghen the valve train!
Duration:281/283
Duration @ .050" Lift:232/234
Valve Lift:595/598
Lobe Lift:35/352
and i was looking at new rocker arms the 13755-kit from comp ! do they help out with hp or is it just to strenghen the valve train!
09-20-2009, 07:21 AM
#4
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yeah im not going to be making no where close to 1000hp ! ill be lucky for 450! im using ported ls6 heads with 918 springs and 7.4pr! i didnt think they did much
09-20-2009, 07:32 AM
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On an aftermarket head the benefit of a roller tip rocker is in the ability to setup the geometry to reduce guide wear. The guides on most aftermarket heads are softer than the GM guides. Setting up the wipe pattern reduces side loading and will prolong the life of an aftermarket valve guide. There are drawbacks as the weight over the nose of the arm is increased wich can present stability issues. This is why on a GM head these stockers rock! I have been running them on my 5.3's for a long time and see 7200 rpm's.
09-20-2009, 12:23 PM
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^^agreed, however iv also heard harland sharp rockers will get ya a 8-10whp gain, 350 bucks....if its worth it to you?? just depends on what your willing to spend for what gain.
09-20-2009, 08:56 PM
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yeah the one i was looking were 500$ im just trying to build my car right thefirsttime to make it hold up to what im going to do to it! ive upgraded every thing but the rockers! im willing to buy any part to make 450 n/a !
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09-20-2009, 09:02 PM
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What heads are you running? FWIW I made 455RWHP on a Mustang Dyno thru a stalled unlocked auto and a Moser 12 bolt. This would go near 500 to the tire on a dynojet coupled to the run of the mill 6 speed/10 bolt combination. Stock rocker arms.
09-22-2009, 09:52 PM
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im usiing ported ls6 heads ! when i get back to the states im goin to have xxxmotorsports in pensacola fl dyno tune it! ive got a fast 92/92 setup electric cut out and every bolt on you can have ! even know my haeds dont have the greastest port job im sure ill be close to 450 hp +- 25 hp in a m6 car ! on thing i still have 3.42 in the rearend
09-23-2009, 06:43 AM
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You can use stock rocker arms they will work just fine for you. If you'd like Harland Sharp sells a modification kit for the stock rockers that replaces the center trunion assembly. That is the only portion of the stock rockers that have shown to be a problem.
09-23-2009, 10:43 AM
#14
I swapped a set of HS 1.8's out for my stock 1.7's and they made a huge difference in overall engine response and smoothness. Might have just been the switch to the higher ratio not the roller tips but I really like them. They are a lot noisier than stockers but have gotten a little better in the last 500 miles. I have about 2k on them now.
09-23-2009, 10:58 AM
#15
Stock rocker arms are pretty much bullet proof. Unless your going to 700hp or .650 lift and above. Those are the only times I would say go ahead and go after market. There are plenty of LS series engines where I am from making 600hp to the wheels with stock rocker arms.
09-23-2009, 04:27 PM
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Go stock arms and do the Comp Cams trunion upgrade. Just did mine in the garage in about an hour and a half. Pressed in with vise and two sockets. Now there caged bearing no need to worry about needles falling in engine and the price is cheap 139.99. I like the upgrade alot..
09-23-2009, 09:57 PM
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trunion upgrade im going to have to look into that! vipvegas your from pensacola im sure you know of xxmotorsports im taking my t/a in for a tune! i think in stead of doing all the work myself im just going to haave them install everything! thanks for all the info guy im going to stay with the stockers! glad i didnt waste 500 on comp rockers
09-23-2009, 10:07 PM
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trunion upgrade im going to have to look into that! vipvegas your from pensacola im sure you know of xxmotorsports im taking my t/a in for a tune! i think in stead of doing all the work myself im just going to haave them install everything! thanks for all the info guy im going to stay with the stockers! glad i didnt waste 500 on comp rockers
09-26-2009, 09:37 PM
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cool man apperciate that! i have evrything i need but im in afhganistan for another 6 weeks! all i think about is coming home to my t/a and turn it into a monster! my cuz tim offered up his garage he lives in cantoment! do you ever go to tgifridays on sat night or bayfront