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#21
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That thing is moving. Can we get some info on the differences in heads and the build in general. Was the same cam used with both heads ? What was the cfm of the E heads ? 430cfm HP, so they are pretty serious.
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#22
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John, Where u shifting that beast?
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,[email protected]@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, [email protected] [email protected] M/T 275/60 ET SS Drag Radial 2024(Pontiac 505) 1.25 60 ft, [email protected], [email protected].... 275/60 Radial Pro's |
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#23
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That's really moving! Good job with the combo
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#24
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Congrats John! That thing is flying.
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Come take a ride http://www.youtube.com/watch?v=P7Y8Awfk2I0 2008, 2013, 2015, 2016, 2019 Central Il Dragway Mod track champion and 2015 IHRA Div 5 Mod champion 2024 Chief of the Pontiacs |
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#25
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good job. congrats!
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540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046s 1.079 4.52 155.15 3000 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! 7.17 @ 188 1/4 mile (2024) Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
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#26
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The old motor was a stock block filled to the water holes. The E Heads I bought from Jeff V. back in 2005 and the cam I bought from his engine builder Jerry Loan. The head flowed around 330 cfm. The new motor is a 535 MR1.
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#27
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I was shifting at 7000 rpm. Going to try 7200. I was going thru the lights at 8000 rpm. I think I am going to put my 390 gears back in.
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#28
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The can in the new motor is a 850 lift and its a 55mm.
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#29
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What gear you running now?
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#30
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430
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#31
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You might want to look into your converter, seems to be slipping a lot
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#32
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Damn that's hauling the mail!!
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#33
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Great job John! That's hauling
![]() Brian
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Boobs & bacon
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#34
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I was thinking putting my 390's back in.
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#35
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How do I check how much the convertor is slipping?
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#36
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Take your rpm at the stripe and compare it to what the number is when you take mph, rear gear and tire height.
Brian
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Boobs & bacon
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#37
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John, how much power did your engine make?
Brian
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Boobs & bacon
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#38
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We put the motor on the dyno when the heads flowed 400 cfm and it made 872 hp and I think it was 770 ft lbs of tq.
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71 Lemans Sport. 72 Lemans Sport. RIP 75 Grandville Convertible. |
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#39
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145.31 x 4.30x 336/29.5 = actual rpm(7116)
I didn't know what tire your running i guessed at 29.5 and if right your slipping almost 900 rpms on top, if taller its worse even.
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,[email protected]@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, [email protected] [email protected] M/T 275/60 ET SS Drag Radial 2024(Pontiac 505) 1.25 60 ft, [email protected], [email protected].... 275/60 Radial Pro's |
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#40
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Going by Darby's numbers, that's 11% slippage.
Brian
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Boobs & bacon
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