5.0l SBF roller pedestal rockers

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cgarb
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5.0l SBF roller pedestal rockers

Post by cgarb » Sat Oct 28, 2017 7:40 pm

What's about all these roller rockers will take as far as RPM and spring force? I got a set of heads set up 130lbs seat and 330lbs open .545/.565 lift. Headed down the road to disaster or will it live for a while? They are 1.7 ford motorsports, they look like a crane rocker but blue.

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Re: 5.0l SBF roller pedestal rockers

Post by bobalattie » Sat Oct 28, 2017 8:21 pm

I ran a set of 1.6's 150/360 spring psi .580 lift but I replaced the bolts with arp pieces. It was in my circle track car. 6600 every weekend every lap. They held up ok.

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Re: 5.0l SBF roller pedestal rockers

Post by Cougar5.0 » Sat Oct 28, 2017 8:55 pm

Ran similar spring rates to the O/P, same rockers, Comp XE lobe with similar lifts. Ran them for 10 years shifting at 6200 RPM, dozens of trips down drag strip.

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Re: 5.0l SBF roller pedestal rockers

Post by cgarb » Sat Oct 28, 2017 10:29 pm

Do you know what bolt from ARP you used? I was looking for some type of better bolt to put in but wasn't having much luck or looking the wrong place.

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Re: 5.0l SBF roller pedestal rockers

Post by bobalattie » Sat Oct 28, 2017 11:04 pm

I just used summit racing and searched 5/16 arp bolts, and found the length I needed in custom 450 series.. 180,000 psi strength..

Don't over torque them. I had a problem with using arp lube on the cast iron heads and stretched a few of the screws that came with rockers. I was really worried abt the thread last in the heads, but they survived. Now I torque them dry and call it good..

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Re: 5.0l SBF roller pedestal rockers

Post by Walter R. Malik » Sat Oct 28, 2017 11:52 pm

cgarb wrote:
Sat Oct 28, 2017 10:29 pm
Do you know what bolt from ARP you used? I was looking for some type of better bolt to put in but wasn't having much luck or looking the wrong place.
With a tough enough bolt, those rockers themselves will handle over 200 pounds on the seat and over 550 open force ... a better alloy bolt is available from Jesel.
http://www.rmcompetition.com
Specialty engine building at its finest.

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