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#1
02-21-2021, 05:59 PM
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I think these power numbers are pretty good,,,should move your car very nicely!! My 455 with iron heads dynoed best at 32 degrees.Tried 30 and 34. What do these speedmaster heads flow out of the box?
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86' |
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#2
02-21-2021, 06:40 PM
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Quote:
Prices have gone up but flow numbers are the same.
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Randy Repp 1964 GTO "GoatZilla" 1964 GTO "Injunuity" A/FX Nostalgia Super Stock 220" Rear Engine Pontiac Powered Dragster https://www.facebook.com/PontiacSpeedShop/ https://www.facebook.com/GoatZillaRacing/ https://www.facebook.com/groups/RebuildExcitement/ https://www.facebook.com/Call1844RacersRV/ https://www.facebook.com/groups/INJUNWARS/ 
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#3
02-27-2021, 12:53 AM
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steve25
"It's not so much the seats and there press fit into the ,its how hard the Aluminum as a whole has been tempered which aids in supporting the seats above a certain amount of spring seat pressure." "In regards to all heads made off shore , I think they are all made with powered metal seats, and if so this is a short coming I would want to know about!" PJ - Where do you come up with this crap? How do feel about conspiracy theories? How many Speedmaster heads have you purchased and tested in your laboratory in securing such results? I wanna see da facts. Arghhhh. |
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