Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

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Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  jbozzelle on July 6th 2018, 9:21 pm

I have a set of aluminum GT40X heads that are pedestal mount rockers and I want to convert to adjustable. I know I need to mill the stud area down .230, but what length rocker studs would you recommend? Going with 7/16 studs/rockers.

ARP has studs that are anywhere from 1.75" long to 3.00" long. I'll probably run a girdle, so should the 3.00" studs be the ones I need?

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Re: Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  gt350hr on July 10th 2018, 4:35 pm

No they are way too tall. 1-3/4 will be fine.

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Re: Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  jbozzelle on July 10th 2018, 5:02 pm

Thanks!

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Re: Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  stanger68 on July 13th 2018, 12:34 am

It’s been 25 years ago but I’m pretty sure we used oem 351 c studs on my brothers 289.

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Re: Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  rmcomprandy on July 13th 2018, 9:16 am

jbozzelle wrote:I have a set of aluminum GT40X heads that are pedestal mount rockers and I want to convert to adjustable.  I know I need to mill the stud area down .230, but what length rocker studs would you recommend?  Going with 7/16 studs/rockers.

ARP has studs that are anywhere from 1.75" long to 3.00" long.  I'll probably run a girdle, so should the 3.00" studs be the ones I need?

Studs for a big block Chevy are the ones to use. I think they are just under 2 inches.

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Re: Converting SBF pedestal mount heads to adjustable rockers... Which length rockers to use???

Post  jbozzelle on July 13th 2018, 9:25 am

Thanks. This will be a winter project. Time to start collecting parts to assemble the heads.

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