Roller Rocker question
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Mountain Pass
Joined: May 2009
Posts: 137
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Roller Rocker question
Im in the process of getting everthing together for my "stage 1" performence upgrade to my 1995 f-150 5.0L HO
Ive got GT40P heads off of a 98 ford explorer (waiting to be magnafluxed) and i am pricing roller rockers from summit.
Ive heard that 1.7 Rollers are the best option for more power,
but the problem is when i got to summit there were way more variables than i thought
Rocker arm mounting style, stud size, slot size, slot width. all confusing
Rocker Arms - SummitRacing.com
I just need a set of roller rockers that get the job done and are as cheap as possible
ty for your help
Ive got GT40P heads off of a 98 ford explorer (waiting to be magnafluxed) and i am pricing roller rockers from summit.
Ive heard that 1.7 Rollers are the best option for more power,
but the problem is when i got to summit there were way more variables than i thought
Rocker arm mounting style, stud size, slot size, slot width. all confusing
Rocker Arms - SummitRacing.com
I just need a set of roller rockers that get the job done and are as cheap as possible
ty for your help
Senior User
Joined: Feb 2005
Posts: 234
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From: Vancouver, Canada
I just installed scorpion 1.72 roller rockers and I like them. if your valve train is stock you will have pedestal style mounting rockers. If your valve train is in good order then they should bolt up to the stock pushrods and have the correct lifter preload. Only modification I needed to do is bend the baffling in my valve covers to clear the rockers. Your looking to have between 1/2 turn to 1 full turn torqued at 20 ft/lbs from 0 lash.
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Mountain Pass
Joined: May 2009
Posts: 137
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My engine guy says studs are the way to go for roller rockers
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The heads on your motor right now have those parts I'm sure, and besides that I believe new rockers will come with all the hardware anyway.
Of course he does.. the heads will need to be machined, drilled and tapped for studs and he stands a good chance of getting the work. Studs are overkill on a stock motor so it's not money well spent IMO.
Of course he does.. the heads will need to be machined, drilled and tapped for studs and he stands a good chance of getting the work. Studs are overkill on a stock motor so it's not money well spent IMO.
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Posting Guru
Joined: Dec 2006
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studs are the way to go, no worries about pulling a bolt out of the head, i have 7/16ths arp studs in my motor and love my entire valvetrain
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Postmaster
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I have a set of 69 351 heads on my 302 , they have screw in studs but i think they were drilled & tapped & had bigger valves put in them . Thats the way they were when i got them , Im not sure but i think they came with press in studs ?? ..They will fit ok , if there going on a 302 you will need the bolt kit because the 302 has smaller head bolts , ARP makes a bolt kit for it ....Lew
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Both pressed in studs and pedistal mounted rockers are more than capable of dealing with the relatively mild stock valve springs and camshafts. It's only when you get into high lift cams with stiffer springs and you start reving the motor beyond 5000rpm that screw in studs become necessary.