COSPEED

Colorado Speed LS Retro-Fit Rocker Arms, 1.7:1 (GM LS Series)

There’s no denying that the GM LS engine platform has proven itself as a performer. The valve train is no different, with an improved design that makes for a perfect combination of power and durability to complement the impressive cathedral port cylinder head design. The rocker arm design features a lightweight, yet stiff rocker body that is strong enough for most applications. However, when it comes to high performance racing applications, high rpm and high valve spring pressures can put the factory rocker arm’s trunnion under intolerable stress.

Colorado Speed has taken an OEM cast steel replacement rocker arm body and added a captured roller trunnion for use in extreme street and race applications. Perfect for drag and circle track racing applications that mandate the use of stock engine components, this performance rocker arm modification is a “must have” upgrade for your LS factory rocker arms. The captured roller trunnion increases stiffness and durability and is NASCAR proven.

Colorado Speed uses COMP Cams® with a new LS rocker arm retro-fit trunnion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunnion with a premium 8620 steel alloy trunnion and caged roller bearings for added durability. The new design from COMP Cams® utilizes caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS needle bearings, which can send loose needles throughout the engine upon failure.

Colorado Speed LS Retro-Fit Rocker Arms are based off customer supplied core rocker arms. Customers can either supply their OEM rocker arms to us or prepay a core charge and send us their core rocker arms within 30 days for a core charge refund. Each customer supplied core rocker arm is checked in detail and refreshed. Customer supplied core rocker arms must be in useable condition. No core charge refunds will be issued on damaged unuseable customer supplied core rocker arms.

If you are supplying your core rocker arms to Colorado Speed, a representative will contact you on shipment after receiving your order.

CLICK HERE TO PURCHASE

COMP Cams LS Series Retro-Fit Trunnion Upgrade Kit (GM LS Series)

Valve train technology leader introduces new premium trunion upgrade for GM LS rocker arms to optimize both performance & durability

There’s no denying that the GM LS engine platform has proven itself as a performer. The valve train is no different, with an improved design that makes for a perfect combination of power and durability to complement the impressive cathedral port cylinder head design. The rocker arm design features a lightweight, yet stiff rocker body that is strong enough for most applications. However, when it comes to high performance racing applications, high rpm and high valve spring pressures can put the factory rocker arm’s trunion under intolerable stress.

Enter COMP Cams® with a new LS rocker arm retro-fit trunion kit that replaces the cageless, loose OEM needle bearings and powdered metal trunion with a premium 8620 steel alloy trunion and caged roller bearings for added durability. The new design from COMP Cams® utilizes caged roller bearings that greatly reduce the possibility of the bearing failure experienced with stock LS needle bearings, which can send loose needles throughout the engine upon failure.

Perfect for drag and circle track racing applications that mandate the use of stock engine components, this performance rocker arm modification is a “must have” upgrade for your LS factory rocker arms. As proof of success, for the last two years this rocker arm trunion upgrade has been tested and performance-proven in the NASCAR GM LS spec engine series.

Features & Benefits:
• Replaces OEM powdered-metal trunion with stiffer, more durable 8620 steel alloy material
• Factory needle bearings replaced with caged roller bearings to increase rigidity & reliability
• Designed for circle track & drag racing classes where stock engine components are mandated
• Performance-proven & tested in NASCAR GM LS spec engine series

CLICK HERE TO PURCHASE

Lunati LS Retro-Fit Rocker Arms, 1.7:1 (GM LS1, LS6, LS2 & LS3)

Lunati has taken an OEM cast steel replacement rocker arm body and added a captured roller trunnion for use in extreme street and race applications. The captured roller trunnion increases stiffness and durability and is NASCAR proven.

CLICK HERE TO PURCHASE FOR THE LS1, LS6 & LS2

CLICK HERE TO PURCHASE FOR THE LS3



CURRENT DISCOUNT COUPON CODES


If you have any questions, please e-mail or call us as we do not frequent CORVETTE FORUM and may not answer any posts in a timely manner. Thank you.

ILM-Express

bump for a great looking product !

orth_98vette

W O W just bought these from another forum member and charged me 200$.. guess i was took hope these are really worth the price in performance..

rustyguns

02402ramair

I have done 3 sets of these and they seem like a nice upgrade and very easy to install.

TTT for a good product

73 LS-4

Definitly on my must do upgrade list


Patrick

a/c man

Just got a set ordered for my car great deal!! free shipping

a/c man

I got my kit today that was fast! ill let you all know how the install goes

GOTHAM VETTE

May be a stupid question, but.......

Is the press mandatory, or has these been assembled using a bench vise?

IM28702

I don't think this is a performance upgrade. These are all about reliability. The factory rockers love to spit out the needle bearings causing a huge performance deficit when it fails completely. But as far as installing these and gaining tenths in the quarter, or ponies at the tire I think you will find a nil gain.

Still a great product, and a great price though.

Hotwired

Thought these were out of stock for a month????

0Cajun @ Edgyvette

Called and left a message. Need to place order ASAP. Please call back so I can get order placed and shipped. Need for a build taking place next week. Thanks

Cajun@BER

JuicedH22

Do you happen to offer CF or any other discounts?

rnelson11

At what point, if any, did GM fix this problem? I have a 2004 coupe and kept hearing about the plastic sway bar ends on the C5s but when I changed my bars last week the ends were metal.

JuicedH22

what??? You realize these are rocker arms, for the engine valvetrain right? Not suspension components.

rnelson11

Yes, I do realize this. I'm just saying that there are some things on the C5 that were fixed on the 2004, like the plastic end links, and was wondering if GM fixed the bearing pin retaining problem at some point as well. I would hate to buy these and then see that my 'rocker arm bearings' are OK.

Z06supercharged

Just got mine last week from you and did them easily with a drill press today. Was very easy and took less than 2 hours pressing out/in the new pieces.

C5Natie

Just ordered a set of the Lunati's for my LS3/L92. Thanks.

CactusCat

Just got a set of these in. Great price, free shipping. Bump for a great seller.

kwik ws6

nice deal