Are PRW rocker arms any good?

Excellent set of rocker arms for a hot street motor for the money. I run a 11.5:1 compression ported aluminum head 440 with a comp cams . 525 lift cam and these stainless PRW 1.6 roller rockers to bump the lift up above the mid . 500s and they have worked great.

How much HP do roller rockers add?

With the baseline laid down, we moved on to a set of Comp Cams 1.5:1 roller rockers. At the same 6,000-rpm peak, we made 401.1 hp and 412.9 lb-ft of torque, a gain of 11.2 hp and 5.9 lb-ft of torque.

Are all LS rockers the same?

The LS1, LS6 and LS2 heads use a straight rocker (no offset between valve and pushrod contacts), and both intake and exhaust rockers are identical. On the LS3, LS9 and LS7/L92 GM heads, the intake rocker features an offset (exhaust rockers are the same as used on LS1, LS6 and LS2).

Do LS engines have roller rockers?

LS rockers use a roller trunnion, where Gen I/LT1/LT4 used a pivot ball assembly. LS engines also use a net-lash, non-adjustable system for securing the rockers and setting lifter preload, where the old engines used an adjustable system that could be used with either hydraulic- or solid-lifter camshafts.

Who is PRW?

PRW is building consumer and industry brand awareness through regional and national automotive magazine and trade publications, internet marketing, trade show participation, automotive celebrity endorsements, and grass roots circle track and drag race events.

What ratio are LS3 rocker arms?

1.72:1 Ratio
Texas Speed & Performance 1.72:1 Ratio LS3 Steel Roller Rocker Arm Set w/ Roller Tip.

How long will roller rockers last?

Used on a daily driven engine with a stock valvetrain, the rockers will last approximately 20,000-30,000 miles with regular oil changes. Since you run your engines for 250,000-plus miles, you would end up replacing aluminum rockers quite often.

What ratio are stock LS rockers?

For example, a stock 1.7:1 (advertised ratio) LS1 rocker actually pushes the valve off the seat at a ratio of 1.54:1, and as the pushrod seat rises on the valve opening cycle, the effective rocker ratio finally rises to 1.69:1 at 0.280-inch lobe lift (0.473-inch valve lift).

Where are PRW parts made?

California
PRW designs and manufactures all branded products on-site at their California facility to tightly control the quality of each part. Not only do these parts meet all SFI specifications, they also reach established industry standards.

What is the full form of PRW?

PRW

Acronym	Definition
PRW	Past Relevant Work (US SSA)
PRW	Piece Rate Worker (India)
PRW	Parents Are Watching
PRW	Public Refrigerated Warehousing

What makes PRW pqx LS alloy rocker arms good?

The new PRW PQX LS Alloy Rocker Arms feature a tough, cast steel alloy material which makes them ideal as an OEM replacement, as well as ideal for a mild street performance application. The combination of the new stronger trunions, coupled with the light weight, but stronger, stock 1.7 ratio rocker arms deliver a much longer service life.

What kind of fasteners do GM LS rocker arms use?

Both part numbers include 8mm, Grade 12.9 Hex Socket Fasteners in the kit. Affordable, durable and easy to install, the PRW PQ X LS Alloy Steel Drop-In Rocker Arms provide a trouble-free solution to a problem for automotive service centers and the LS enthusiast community.

Why are PRW roller rockers Any good at all?

The only reason i knew the brand was because they were used in a build up in a 5.0 magazine and they made some pretty sweet horsepower at anderson using these if i remember right 506 at the rear wheels with a s trim. Anderson sells the same rocker for 200.00 so i thought they might be decent

Why did GM change the Rockers on the LS-1?

The OEM rockers went from the familiar stamped steel design to a cast steel material, which was smaller and lighter. This allowed for higher engine speeds, while reducing the moving mass in the valve train.