So since my valve cover gaskets are leaking and I'm gonna need to pull them off, I was thinking that while I'm in there I might as well put some better rocker arms on. Right now I have stock 88 HO rockers on a totally stock HO engine. What can I put on there that will not cause me valve to piston clearance issues? I was looking at a set of 1.73:1 roller rockers on ebay, but I don't want to buy something I can't use. I might also pick up a set of taller valve covers for clearance reasons and to fix the oil cap clearance problem I have with the reversed HO intake.
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86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers -
Look into a set of Scorpion Rockers they are better than the Crane Golds and they are only about $125 a set. I think 1.73s might be a little to big with an H.O. cam.http://secondhandracing.com/Home.aspx
http://secondhandradio.com/
R.I.P. Jason P Harrill 6-12-06
http://www.grandmarq.net/vb/showthread.php?t=5634 -
Whats the stock ratio, 1.5:1? Would 1.6:1 be OK then? As you may have guessed, I don't know much about modding engines, especially "normal" motors. Only work I've ever done hopping up a motor was an aircooled VW mill. Did a mild cam, big valve heads and dual carbs on that one. Nothing major but it was better than stock.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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the rocker arms on all the late model V8 engines are the same. HO, non-HO, E6 or E7 heads. stock rocker arm ratio is 1.6:1.
1.7:1 rocker arms are available and were used on the 93-95 Cobra 5.0L engines. these rockers increase lift at the vavle by .030", so you can safely run 1.7 rocker arms with a stock HO cam with out any piston to valve clearence problems.
BTW, stock HO cam has .444" of lift, adding .030" makes it .474".2003 Town Car Signature - 3.27 RAR, Dual exhaust and J-mod - SOLD 9/2011
89 Crown Victoria LX HPP -- SOLD 9/2010
88 Grand Marquis LS - The Original -- Totaled 5/2006
I rebuild AOD/AODE/4R70W/4R75E transmissions....Check out my Facebook page: https://www.facebook.com/pages/North...48414635312478Comment
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Scott runs 1.7 roller rockers on his car, and he says it makes a BIG difference...1983 Grand Marquis 2Dr Sedan "Mercules"
Tremec TKO conversion, hydraulic clutch, HURST equipped!
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I'm hoping I can fit some 1.7 rollers under my aluminum finned covers when the time comes.Chris - A 20th Century Man \m/ ^.^ \m/Comment
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