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#1
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Scorpion and Harland Sharp rockers mix and match?
Need 3 new Harland Sharp 1.5 roller rockers - will the Scorpions set the pushrod in the same location = Length?
Thanks, Craig |
#2
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It should, for years I ran H/S 1.5 rockers on the exhaust side and PRW stainless 1.65 on the intake side and I used 9.300 on all 16 valves.
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Johnny US Army Retired 1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
#3
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Yes it would , but I have concerns about the Scprions holding up for you if you have busted the Harland's which are stronger.
What's your open pressure?
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#4
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Have you contacted Harland Sharp for replacement rockers?
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
#5
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Agree on contacting H/S, if you broke them they will probably warranty them, if not they sell them individually.
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#6
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HS can sell individuals as well as rebuild them. Nice folks to work with.
Also from what I have found every different brand even with the same listed ratio is slightly different, different pushrod cup depths, different roller wheel diameters.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#7
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Thanks guys - just had some contact with the stud girdle and didn't want to run them.
They are back ordered. |
#8
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Quote:
Not wanting to argue, but rather curious as to why you claim the HS are stronger? |
#9
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HS has a "Race set" also really bigger and bulkier.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
The Following User Says Thank You to Skip Fix For This Useful Post: | ||
#10
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I can honestly say a scorpion rocker is the only one I have seen split in half horizontally. I have replaced 2 sets for a buddy of mine with HS. From that 2 sets at least 6 of them started cracking and the one broke in half. This was not the race series rockers.
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#11
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Craig, I have 1.65 ratio in HS and Scorpion. When setting up the rocker arm geometry, each brand required different pushrod lengths with the cam I have.
Also, the Scorpions measured 1.65 ratio with checker springs and 1.62 with running springs. The HS were 1.76-1.77 with checker springs and 1.65 ( maybe .01-.02 higher, don't remember ) running springs. I just use a small HFT cam, so no high spring pressures. Hi Jim! Last edited by tc; 03-23-2024 at 10:05 AM. |
The Following User Says Thank You to tc For This Useful Post: | ||
#12
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Quote:
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#13
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Quote:
If your running a stud girdle make sure to run the 4 ends poly locks with the retaining snap ring. It prevents the girdle from moving down. https://www.mvpmotorsports.com/comp-...d-studs/4508s1
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 4:11 gear. 29" slick. Best so far 9.95@134 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
#14
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Wow - I didn't know that could or did happen - I just thought it was my mistake.
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#15
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Quote:
Ya I had it happen and caught it right away. It put a few witness marks on the stud griddle. No damage. Just make sure you check the circumference of your poly locks so there all the same size. And also watch the size of the end that fits into the rocker for proper clearance. I run Crower 1.5 Stainless rockers and I used all the Comp cams polylocks. Seeing this happened make sure to check your pushrods to make sure that none are bent.
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 4:11 gear. 29" slick. Best so far 9.95@134 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
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