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#1
04-19-2011, 10:41 AM
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Quote:
 Where is R and R, is that in Blaine off 109th?
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************************************* 463 SRP .035 Pistons, Eagle rods, N crank, Pump gas, Victor intake, Holley 850BT carb, 6H heads,TH400 w/T-Break, Continental custom 3500 converter, 3.73 gears. TV7101 TURBO! 
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#2
04-19-2011, 11:24 AM
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Years ago Lee Atkinson changed from a Ultradyne 231/239 at .050"/ 108 LSA hyd flat tappet cam to a Ultradyne solid flat tappet cam with 247/247 at .050"/ 108 LSA and he picked up about 2-tenths and 4 mph ( best of 11.27 at 199.61 mph, I think ).
I know its not apples-to-apples but note the amount of increase in inatke duration. It was a street car and he commented his driveability not not suffer with the change.
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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 |
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#3
04-19-2011, 11:35 AM
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'68 GTO 4-spd Hardtop (11) '68 GTO Convertible AT (1) '70 LeMans Sport Land of Lakes Muscle Car Classic Facebook Event Facebook Wall (Kurt Smith,Minneapolis) |
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#4
04-19-2011, 12:17 PM
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 1970 gto (4spd) 462 500 hp [email protected] / 1.843 60'/ 3980 lbs 1964 corvette roadster 1968 corvette roadster 1962 corvette "equal rights, not equal things" if you want to know the future, read "atlas shrugged" I dont race a 4spd because it is easy, I race a 4spd because it is hard. 
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#5
04-19-2011, 01:39 PM
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I'm a one finger typist.... darn thing seems to be swelling a lot these days
 119.6 mph Thanks for the heads up. Cliff I believe my notes are correct on the 108 LSA for both cams. He worked with Bullet on the cam, they like many others have found a narrow lobe separation can work well in a Pontiac. Dispite the horror stories that permeate our community in doing so. Harold used to use quite a bit of Ultradyne lobes with a 108 lobe separition but not typicaly in a flat tappet lobe, and the others were generaly on cams with more duration. Example, the old Ultradyne catalog suggests solid flat tappet cams from 255 and up were ground with a 108 lobe separation. Related, Both Chris Mays at Comp and John Partridge at Bullet have both suggested a 108 lobe separation on my cams before. And they seemed to have worked quite well.
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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 |
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