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#21
08-01-2017, 03:19 PM
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With your use of a hydraulic flat tappet cam it is not necessary no matter the horsepower level, it's not a roller cam and certianly not enough spring pressure involved. Go back and read my post about 'Roller Pressure Angle' and do additional research on the subject. But if it gives you a warm cozy feeling go ahead.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE Last edited by Steve C.; 08-01-2017 at 03:27 PM. |
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#22
08-01-2017, 04:20 PM
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X2. Unnecessary hardware on a flat tappet hydraulic or solid lifter camshaft.
Roller camshafts with aggressive lobes at .200" lift point, yes. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#23
08-01-2017, 06:20 PM
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X3 on unnecessary. Might be time to point out that the lifter braces are not a quick bolt-in item. They have to be fitted to the lifter bore exteriors, and while the braces are nicely finished, the block is not. So be prepared to spend a lot of time grinding away on the braces to obtain a close fit. Then mix up the epoxy and slather on to fill in the remaining gaps that will still be there no matter how much time you spend on fitment. Then be prepared to crank down the brace bolts while sliding a lifter in the bore to insure you don't over-tighten and make the bore out of round. All this might be worth it when you have radical roller lobes acting like a baseball bat to the roller, and really a wasted exercise when dealing with a mild lift cam.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 Catalina Safari Wagon. |
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#24
08-01-2017, 06:47 PM
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X 4...unnecessary considering the cam.
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“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
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#25
08-01-2017, 06:49 PM
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His cam cant hurt a 301 block IMO.Tom
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#26
08-01-2017, 07:22 PM
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Agreed with all. Not needed for a flat tappet cam, but if he wants to swap out to a big roller later on, he can do so without all the hassle so if you have the $250. Go for it.
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71 Formula 433, Splayed cap 400 block, 4" stroke Scat forged crank, 6.8 Eagle rods, custom Autotec pistons. SD 295 KRE D ports, Old faithful hybrid roller, Torker II, Holley Sniper Stealth, Tribal Tubes, TKO 600, 3.73 Eaton posi. |
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