WebEvery Nailhead, not just the high performance models, had forged rods and cranks. Rocker arm shafts are much stronger than studs with rockers on them. The whole valve train is very light so softer valve springs can be used for less engine wear and quicker revs. WebOct 30, 2015 · for cylinder head the torque is : step 1 55 ft-lb, step 2 65 ft-lb, step 3 85 ft-lb. Rocker arm stud nut or bolt is 17 to 23 ft-lb. and valve cover bolt 72 to 108 in-lb. Posted on Dec 05, 2009 Helpful 0 Not Helpful Flag anthony ventura 180 Answers SOURCE: 04 f250 6.0 diesel need torque specs on intake
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http://www.taperformance.com/proddetail.asp?prod=TA%5F1308 WebMay 24, 2006 · notebooms said: Any idea as to what to run for adjustable rockers in a Cadillac 390 motor? or any other rockers that will install on my stock Caddy rocker shafts? studebaker adjustable rocker arms (from the V-8 and I-6 are identical) 1.8:1 ratio. usually around $100 a set. same diameter rocker shaft as Cadillac. including games in your instruction
Nailing Down The Buick Nailhead - Engine Builder Magazine
WebJul 11, 2012 · 1952-1964: 1.8:1 (1959-1964 Rocker Arms are Offset) Cheap neat trick is to use 1.8/1 on early 1949-51 engines, add a four barrel intake, headers; will net you 60 dyno proven horses. •Must use adjustable rockers or pushrods with solid cam or roller cam. •Chevy lifters can be used but need shorter pushrods. WebApr 25, 2006 · Nailhead Parts Interchange; Buick Engines Today; Home. Forums. FIXIN' BUICKS. Buick Engines. Nailhead: 264, 322, 364, 401, 425 ... Or you could just buy a set of my Adjuatable Roller Tip Rocker Arms. Besides being adjustable they will increase your performance. Tom T. 6. 66 buick guy Active Member. WebOct 1, 2005 · A nailhead valve goes straight up and down, and is at a 90-degree angle to the rocker arm tip. As the valve goes up and down, there isn't all that much sweep across the valve stem, is there? I can't believe there would be $600 worth of performance increase with just a roller tip. including furniture