Scorpion Racing Merchandise has been within the efficiency engine enviornment for many years now, and through that point it has developed a incredible lineup or rocker arms for a variety of engine purposes.
In different phrases, whether or not you’re constructing a torque monster for an off-road rig or a marine motor that’ll see sustained high-RPM use, there’s a very good likelihood Scorpion’s acquired the proper made-in-the-USA rockers for the job.
However that large vary of purposes comes with a conundrum: How have you learnt which Scorpion Rocker Arms will work finest on your engine construct? We’ll break down some nuances between in style choices within the Scorpion catalog under, and you’ll click on on the headlines for every one to see all of them at SummitRacing.com.
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All of it begins with Scorpion’s bread-and-butter, the Race Sequence. Think about these rocker arms the beginning of your anvil-solid valvetrain construct. They’re constructed from aerospace-grade aluminum—which is a elaborate means of claiming they’re a lot sturdy, but tremendous light-weight. Higher nonetheless, they’re CNC-machined to laser-tight tolerances, with no burrs or tough edges. Then they’re anodized for a ultimate, additional degree of sturdiness.
Scorpion Race Sequence Rockers deal with as much as a 0.950 inch elevate and a 950 pound most open spring stress.
Scorpion affords Race Sequence rocker arms for a lot of frequent Chevy, Pontiac, Ford, and AMC motors. (There’s additionally a mixture of Race Sequence rocker arms particularly for GM LS engines too.)
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The Endurance Sequence primarily takes all the great things from the Race Sequence and kicks it up with extra advantages.
For starters, Endurance Sequence rocker arms are lighter, trimming about 28 grams (on common) from the Race Sequence rockers. They’ve additionally acquired a decrease profile—so there’s a very good likelihood they’ll match underneath your inventory valve cowl.
Endurance Sequence rocker arms deal with a 0.750 inch elevate and a 750 pound most open spring stress.
Once more, Scorpion makes Endurance Sequence rockers for a variety of frequent Chevy, Ford, and AMC engines—and there are additionally choices for Chrysler Magnum V8s too.
And for the boating crowd, you’ve acquired a a lineup of Scorpion Endurance Marine Sequence Rocker Arms made to deal with the distinctive calls for of a ship motor’s valvetrain. These rockers have angle-cut corners to suit inside marine-style valve covers and have been rigorously examined in marine racing environments.
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You may run out of house actually fast when putting in a beefy, upgraded aftermarket valvetrain. And in the event you’ve acquired small block Chevy cylinder heads that use heart bolt valve covers as an alternative of a fringe bolt format, you recognize that downside all too nicely—heck, room will get tight in numerous Ford Windsor heads too.
For that motive, Scorpion affords its Slender Physique Rockers.
Out there in a handful of frequent ratios for later SBC and Ford Windsor motors, these rockers require an exterior guideplate. However! Scorpion additionally affords a collection of Slender Physique Self-Aligning Rocker Arms that eliminates the necessity for that aforementioned guideplate.
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Certain, having loads of rocker choices for frequent V8s is nice, however for an enormous a part of the off-roading group, the trusty AMC six reigns supreme. These rocker arms boast the identical impeccable construct high quality that made Scorpion well-known, and now you will get them in 1.6 and 1.7 ratios for the legendary 232, 258, and 4.0L H.O. six present in a couple of zillion Jeep fashions because the Nineteen Seventies.
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Thus far we’ve been primarily speaking about stud- and pedestal-mount rocker arms, however for severe valvetrain stability, most high-performance race engine builders go for a shaft-mount design.
And also you guessed it, Scorpion’s acquired your again there too with its Endurance Sequence Shaft Mount Rocker Kits. They’ve acquired absolutely radiused 7000 collection aluminum rocker our bodies and the metal parts are constructed from bearing high quality metal that’s heat-treated for final sturdiness.
Endurance Sequence Shaft Mount Rocker Arms assist be certain that the rocker tip stays completely positioned over the valve, for optimum effectivity and valvetrain efficiency.
You may get these shaft mount rockers for the 23 diploma SBC cylinder head and sure 23 diploma AFR Eliminator collection heads too. Click on the hyperlink above to see all your rocker choices.
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Different Valvetrain Improve & Restore Elements
As you’d guess, the celebration doesn’t cease with rocker arms right here. Scorpion Racing Merchandise additionally affords a sturdy mixture of different important valvetrain parts too, together with mounting stands, stud girdles, rocker arm nuts, and extra.
All informed, if you wish to give your cylinder heads a severe overhaul—no matter the place your engine goes—it’s in all probability a sensible transfer to start out with Scorpion.
Need a nearer look? Right here’s a video rundown of what’s within the Scorpion catalog:
