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  #41  
Old 07-02-2021, 03:17 PM
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grandville455 grandville455 is offline
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Originally Posted by blueghoast View Post
Hey Darby What converter and stall+flash is your's if you don't mind saying

Thanks GT
8" Flashes to 6200

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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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  #42  
Old 07-02-2021, 03:19 PM
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Stan Weiss Stan Weiss is offline
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Originally Posted by KEN CROCIE View Post
BSFC is a calculation, not something to "hook up". Usually the dyno does it automatically , similar to the way the dyno calculates HP.
Ken,
While that is true, I took it to mean he didn't "hook up" the fuel flow meter.

Stan

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  #43  
Old 07-02-2021, 03:36 PM
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Scott Stoneburg Scott Stoneburg is offline
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Originally Posted by grandville455 View Post
What kind of times u hoping to run? What weight?
The car weighed 3550 before. The IA block is a little heavier so I guess aprox 3590 now. Im not sure what it will run. ..what I would like it to run is 6.0s. But other things besides motor HP may limit that. ( gear, converter, being able to hook..lol..) The converter may be too tight. Went to 4400 behind my 474. Will probably flash higher now but hopefully will lock up with a decently low slip percent. I could usually get the car to hook before but im gonna upgrade the rear shocks fro. The generic red rider shocks to aide the suspension.

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  #44  
Old 07-02-2021, 04:41 PM
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Ken,
While that is true, I took it to mean he didn't "hook up" the fuel flow meter.

Stan
Yes. Im not sure why but it wasnt.

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  #45  
Old 07-02-2021, 04:42 PM
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8" Flashes to 6200
Darby, does yours make peak torque that high? Dont you want the converter to flash to peak TQ?

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  #46  
Old 07-04-2021, 07:36 AM
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Darby: What brand convertor did u go with. Thx

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  #47  
Old 07-06-2021, 07:35 AM
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grandville455 grandville455 is offline
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Originally Posted by Scott Stoneburg View Post
Darby, does yours make peak torque that high? Dont you want the converter to flash to peak TQ?
I dynoed with my 2' headers that had the 421 collectors, they actually lowered my torque peak compared to my old 1 7/8 with a a standard collector, that peak was 5200! I would guess these 2" with the standard collector which i now have on would be similar maybe 100 rpm more with more up top? I will take hp gain any day day over torque at the launch, maybe a tractor engine yes, but that's not what we're building!

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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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  #48  
Old 07-06-2021, 07:36 AM
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grandville455 grandville455 is offline
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Originally Posted by chuckies76ta View Post
Darby: What brand convertor did u go with. Thx
Hey Chuck, its a 8' RACE conv from conti redone by lenny at UCC!

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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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  #49  
Old 07-06-2021, 11:34 PM
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Originally Posted by grandville455 View Post
8" Flashes to 6200
Mine flash's at 5500 but seams lose out the back. Mite it have to do with the
3:42 gear. I put the 3"42 in when I run the blower motor. I wanted to try
this converter with these gears, maybe have to go back to 3"73's?
Thanks for any info.

GT

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