AFR BBF Head
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Re: AFR BBF Head
What push rods do you recommend? AFR recommends 3/8" thick wall, and my cam will be an .819 lift, so I want to get the best set possible to limit side deflection and good tips.
Re: AFR BBF Head
HorsinAround wrote:What push rods do you recommend? AFR recommends 3/8" thick wall, and my cam will be an .819 lift, so I want to get the best set possible to limit side deflection and good tips.
Depends on the cam and valve springs used.
.135" wall x 3/8" are used in many applications.
Re: AFR BBF Head
Lem Evans wrote:HorsinAround wrote:What push rods do you recommend? AFR recommends 3/8" thick wall, and my cam will be an .819 lift, so I want to get the best set possible to limit side deflection and good tips.
Depends on the cam and valve springs used.
.135" wall x 3/8" are used in many applications.
Gotcha. As I mentioned the max cam lift is .819 (I'll have to look at the cam card when I get home to get all the specs) and I am using the PAC Racing #1224 1.625" OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850" maximum lift.
I have always used Comp push tubes, but did have trouble with a tip collapsing usually once or twice a season on the pulling truck and the lift wasn't quite as big. Also this is a 533 drag motor build, so it won't see the rpm that the puller saw...
Re: AFR BBF Head
HorsinAround wrote:Lem Evans wrote:HorsinAround wrote:What push rods do you recommend? AFR recommends 3/8" thick wall, and my cam will be an .819 lift, so I want to get the best set possible to limit side deflection and good tips.
Depends on the cam and valve springs used.
.135" wall x 3/8" are used in many applications.
Gotcha. As I mentioned the max cam lift is .819 (I'll have to look at the cam card when I get home to get all the specs) and I am using the PAC Racing #1224 1.625" OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850" maximum lift.
I have always used Comp push tubes, but did have trouble with a tip collapsing usually once or twice a season on the pulling truck and the lift wasn't quite as big. Also this is a 533 drag motor build, so it won't see the rpm that the puller saw...
I get our rods from the same place Comp does only cheaper.
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