Pontiac 400 rocker arm ratio
http://www.xiamenjiyang.com/products_show.asp?id=2220 WebJan 23, 2002 · It's clear that the stock rocker arm is a very reliable design. However, I wasn't aware that stock GM rockers are closer to 1.46:1 ratio. The main advantages that I saw in Comp's roller tip rockers were: 1.Less valve guide wear. 2.Less valve stem tip wear.
Pontiac 400 rocker arm ratio
Did you know?
WebNov 13, 2024 · The Edelbrock cylinder heads have Ram Air exhaust IV ports—so you should use this set of Hedman headers. Keep your compression ratio at about 9.5:1. According to Edelbrock, this combo will … WebJan 30, 2024 · Some Ford rocker arms will fit the Pontiac, but not Chevrolet. Stock Pontiac, stamped rocker arms are quit strong and will run a long time. If you are looking for more lift, look to the cam, or at aftermarket roller rocker arms. Pontiac did use 1.65 ratio rockers on the Ram Air engines.
WebRocker Ratio's. Most common rocker ratio's are 1.5 and 1.65. The difference physically is where the pushrod intersects the rocker. The 1.5 is out toward the end of the rocker and … WebShop COMP Cams 400 Pontiac V8 Engine parts and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. ... Rocker Arm Ratio: 1.65 Stud Size: 0.437" Rocker Arm Nut Style: ...
WebI am one of these power-hungry Pontiac guys. For example, my 406 (+.030” 400) sports a Comp Cam 270H Magnum hydraulic cam. With .313” lift at the lobes, a stamped rocker arm provides a theoretical lift of .470”. (.313 x 1.5 = .4695”) With a 1.65 ratio rocker the lift approximates .516”. WebMar 6, 2024 · Find PONTIAC 6.6L/400 Rocker Arms Full roller Rocker Arm Style and get Free Shipping on Orders Over $99 at Summit Racing! $5 Off Your $100 ... Aluminum, 7/16 in. …
WebRocker Arm Stud Kit. ... 290-7201: Pontiac 400-455 w/ Edelbrock D-Port Head Bolt Kit. 190-3609: Pontiac 400-455 w/ Edelbrock D-Port Head Stud Kit. 190-4306: Ram Air 5 hex Head Stud Kit. 190-4005: Ram Air 5 hex Head Stud Kit. 190-4205: Pontiac 12pt Timing Cover & Water Pump Bolt Kit. 190-1501: Pontiac hex Timing Cover & Water Pump Bolt Kit.
WebThis video covers the installation of roller lifters, roller rockers, and pushrods. It also covers how to align the rocker arms and set up pushrod guide plat... fo3 player homes themesWebT5 NWC Cluster Gear 2 95 Ratio Mustang Camaro Firebird Non-World Class. ... NOS 1965-74 Chevy Pontiac Olds SS GTO 442 Muncie Speedo Gear Fitting GM 345215. ... 465 203 adapter #336984 SM465 NP203 ROCK CRAWLER 203 DOUBLER. 465 203 adapter #336984 SM465 NP203 ROCK CRAWLER 203 DOUBLER. green white flannel shirt for menWebMar 16, 2010 · A rocker arm ratio of 1.5 means that the actual cam lobe lift will be multiplied by 1.5. A typical Pontiac stock cam has a lobe lift of .270, and with a 1.5 ratio, the valve lift … fo3 railway rifleWebNov 5, 2024 · does anyone know if you can change the rocker arm ratio from 1.5 to 1.6 on a basically stock 69 400 to increase the lift. ... While they will physically fit on the engine rocker stud, Pontiac did a few things to ensure their 400 RA4 engines didnt blow up … green white football helmetWebDec 15, 2011 · Rocker arm suggestions for Pontiac 400. Jump to Latest Follow 1 - 7 of 7 Posts. MJS69 · Registered. Joined Jun 19 ... If you ever consider 1.65 ratio rockers, be … fo3 point lookout lighthouseWebOct 2, 2011 · We install high-ratio rocker arms onto a Pontiac V-8 and measure the results. Rocky Rotella writer. ... the near 0.400-inch valve lift that Pontiac engineers chose was close to the head's potential. fo3 random encountersWebFeb 25, 2024 · For our first set of tests with the stock head, we compared stock rocker arms with a 1:1.26 ratio to the 1:1.5 ratio roller rockers. The ratios increased the 0.295 inch of lift to 0.372 inch and 0.446 inch, respectively. The high-ratio rocker arms did well at the peaks, picking up about 5 percent more torque and power. green white girl scouts