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  #21  
Old 11-05-2017, 10:25 AM
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I run 9.450" 3/8" diameter 0.083" wall; thickness Smith Brother's PRs with Edl RP heads that use 5.275" valves and Crower lifters. Never seem to have any rpm related issues with a 0.640" lift SR. Guide plates were machined to accept the larger PRs.

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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  #22  
Old 11-05-2017, 12:34 PM
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Here's one of the pics Jeff sent me, can get more monday
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  #23  
Old 11-05-2017, 12:43 PM
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Here's one of the pics Jeff sent me, can get more monday
Bill those are D Ports? What do they flow?

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Darby
74 Grandville 2Dr 455 c.i 4550#
2011 1.60 60 ft,7.33@94.55-11.502@117.74


2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32
M/T 275/60 ET SS Drag Radial

2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's
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  #24  
Old 11-05-2017, 12:57 PM
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Yes D ports. Flow sheets from his place said 340 @ .700. They have 2.19 intake valves. 1.18 x 2.42 intake port
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  #25  
Old 11-05-2017, 01:02 PM
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Originally Posted by Bill Eveland View Post
Here's one of the pics Jeff sent me, can get more monday
Quote:
Originally Posted by Bill Eveland View Post
Yes D ports. Flow sheets from his place said 340 @ .700. They have 2.19 intake valves
Nice!! What bore size were they flowed on? You'll be running low low tens or better!!

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Darby
74 Grandville 2Dr 455 c.i 4550#
2011 1.60 60 ft,7.33@94.55-11.502@117.74


2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32
M/T 275/60 ET SS Drag Radial

2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's
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  #26  
Old 11-05-2017, 03:19 PM
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2.15 titanium intake and 1.65 ss exh

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