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#21
11-20-2011, 10:29 PM
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Darby i have an old one from 10-10-2007....if you do a search under "Street pro mufflers" it comes up......as usual i can"t seem to get it into this thread.
This is with a 455 crower 60919 cam 2 1/2 pypes with X over and street pro mufflers, this also has a tri power on it. New set up is the same 455, except 290 cfm alum heads by sd along with their OF cam. Maybe someone with more "Puter" savy than me could post it in this thread. Rich |
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#22
11-20-2011, 11:07 PM
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http://s223.photobucket.com/albums/d...running003.mp4
Ok, played around with this, hope it works Rich |
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#23
11-20-2011, 11:31 PM
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How about a comparison before and after blocking the intake manifold exhaust crossover. Some have said there is an audible difference.
Engine is 1971 455 overbored to 462, 6X-8 heads running about 9.75:1 CR, Comp Cams Magnum 280, 800 cfm AVS e-brock carb on a P4B. Exhaust is Hooker Competition Headers, 1.625" x 28" into 3" collector, 2-1/4 inch exhaust pipes back to Dynomax Super Turbos, no H-pipe, no X-pipe. First link is the way it sounded before I blocked the intake manifold exhaust crossover: http://www.youtube.com/watch?v=Fmccth_JWeQ The second is the same but with the intake manifold exhaust crossover blocked: http://www.youtube.com/watch?v=Pd3Dm...eature=related Not sure if I can hear any difference. |
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#24
11-21-2011, 12:04 AM
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Quote:
Forgot to mention, Dougs headers on the vid, before i got the alum heads i was running 6X-8 heads with a mild port job. |
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#25
11-21-2011, 02:22 AM
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Has a better rumble than mine You win.
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#26
11-21-2011, 03:31 AM
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Mine is in my signature, at time idle was high and exhaust leak at header. TRi y's, tripower-not stock at all, 3 inch with thrush welded mufflers. Have electric cutouts but there closed in vid.
__________________
63 Lemans ride along and drag race. https://www.youtube.com/watch?v=XMJHMPx7KAQ Gear Jamming https://www.youtube.com/watch?v=mw7KPRASomg At the track Last edited by ahnuld; 11-21-2011 at 04:13 AM. |
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#27
11-21-2011, 01:08 PM
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Here's my 67 Firebird with hooker headers and flowmaster exhaust.
http://youtu.be/XyMRq8ne_WQ |
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#28
11-21-2011, 05:52 PM
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Quote:
__________________
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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#29
11-21-2011, 06:00 PM
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Quote:
__________________
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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#30
11-21-2011, 06:00 PM
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Quote:
__________________
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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#31
11-21-2011, 07:21 PM
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Quote:
Maybe i need to get some different mufflers instead of the street pro"s Rich |
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#32
11-21-2011, 07:38 PM
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Quote:
__________________
63 Lemans ride along and drag race. https://www.youtube.com/watch?v=XMJHMPx7KAQ Gear Jamming https://www.youtube.com/watch?v=mw7KPRASomg At the track |
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#33
11-21-2011, 08:47 PM
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Ram Air 2 1/2 inch Manifolds, 2 1/2 inch exhaust with x-pipe and Goelrich Mufflers, Crower 60919 Cam.
At Idle  Down the track, will look for a better one.  Youtube link at the track http://www.youtube.com/watch?v=UW30Q2lZ9Zs Another Idle http://www.youtube.com/user/formula74
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74 Formula 469, 6X-4's, 72 Intake, Ramair Manifolds. 3 inch exhaust with x-pipe Custom Roller Cam, 1.52 Roller Rockers Quadrajet done by Cliff 3:42 gears 12.075 @ 112.70 12.092 @ 112.43 12.128 @ 111.71 
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#34
11-21-2011, 10:05 PM
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Another one...http://s668.photobucket.com/albums/v...onepics265.mp4
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#35
11-21-2011, 11:35 PM
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Quote:
__________________
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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#36
11-22-2011, 01:38 AM
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Quote:
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#37
11-22-2011, 06:56 AM
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Quote:
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#38
11-22-2011, 08:18 AM
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Quote:
__________________
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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#39
11-23-2011, 10:10 PM
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First is idling, then my son revving it up, then with the electric cut outs open. The sound gets distorted with the electric cut outs open because its too much for the mic:
http://s942.photobucket.com/albums/a...t=100_0660.mp4 Next is me light throttle pulling away (not enough room): http://s942.photobucket.com/albums/a...t=100_0659.mp4 400 .30 over 10.75:1 16x 212/224 112 LSA Edelbrock/ Holley 770 vac sec. LBMs hogged out to 3" with 3" collector, 3" dumps, NO "X" (yet), to 2.5" mandrel bent tubes with tails and 2 Magnaflows. Rich |
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#40
11-24-2011, 05:44 PM
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Sounds good, what magnaflows? Here is mine with a 3 1/2 X and 3 1/2 Bullets, I had to cut the X cause the headers that were in this car were Hooker super comps, and they were narrower than my Hustler's with those adapters, anyway after trying to figure out where to cut it and how much to weld back in etc so i could get it as close to the rear of the trans as possible, cause that's How it will be in spring. I ended up with a 1/4 gap at the top of the drivers collector ,cause the bullets were hitting the bottom of the floor by tunnel, this was just to hear how it sounded it with them, I will change it or just get a New X I haven't decided yet, But it sounds good! When I revved it the smoke is from dumping trans fluid down my carb from before to store it, and the mic kinda gets muffled when it is revved up too. This was just a test tho as its 50 here today !! Turn up the volume!
 . It's put away now til spring  
__________________
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 Last edited by grandville455; 11-24-2011 at 05:52 PM. |
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