Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Engines and Components› Camshafts and Valvetrain
COMP Cams
COMP Cams Rocker Arms CS 1.52 7/16 Ultra
SKU: C007 1604-8
Easy — 1–2 hours
Overview
Constructed from investment cast 8650 chromemoly, these rocker arms offer increased strength and rigidity with an arched, web-like design.
Show original supplier description
Part #: 1604-8
The Ultra Pro Magnuma Roller Rocker Arms for Chevy V8 265-400 c.i.d. (SBC) Applications not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. These Rocker arms feature a 7/16" Stud diameter and 1.52 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring Oversized trunnions, precision-sorted needle bearings and hardened Roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.
- Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.
- Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.
- Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.
- Lifetime Warranty - So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.
Ultra Pro Magnum Roller Rocker Arms for Chevy
Vehicle Symptoms
- Ticking noise from valvetrain at idle
- Loss of power at higher RPMs
- Rough idle or misfire under load
- Valve float at high RPM
- Decreased engine performance after cam upgrade
Relevant Conversations
- SBC valvetrain ticking noise fix
- 1.52 roller rocker arms vs 1.6 ratio
- COMP Cams 1604-8 install guide
- Upgrading rocker arms after cam swap
- Best rocker arms for small block Chevy 350
- Valve float at 6000 RPM SBC
- Pro Magnum vs Ultra Pro Magnum rockers
- Rocker arm upgrade for more lift SBC
- 7/16 stud rocker arms for 400 small block
- Losing power after cam install SBC
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | COMP Cams |
| Part Number | C007 1604-8 |
Videos
COMP Cams Ultra Pro Magnum Rocker Arms
COMP Cams Ultra Pro Magnum Rocker Arms
COMP Ultra Pro Magnum on a LT1
COMP Cams® Roller Rocker Arms on V8TV
comp cam roller tip rocker arms vs no name brand rocker arms lt1 engine who makes them
The Latest LS Rocker Arm Upgrades From COMP Cams®
Speed Secrets: COMP Cams LS Rocker Arms explained!
COMP Cams® Quick Tech: Achieving Proper Rocker Arm Geometry
COMP Cams® Quick Tech: Which Rocker Is Right For Me?
COMP Cams #Techtips: Hydraulic Roller Lifters
Assault Racing vs ProComp Rocker Arms
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy