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Old 01-05-2012, 10:46 AM
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F ROCK F ROCK is offline
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here's mine. 71 GTO.
at this time it was a 1970 350, #11 heads, qjet.... that engine ran great.

Pypes 2.5" with streetpro mufflers; iron log manifolds. (this non numbers matching car is for sale, btw.)

http://www.youtube.com/watch?v=Ak-2Vr0R6bA

Last edited by F ROCK; 01-05-2012 at 10:57 AM.
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Old 01-09-2012, 06:38 PM
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grandville455 grandville455 is offline
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Thumbs up 3 1/2 Pypes X with 3" Ultraflows
As promised here is a video of the new exhaust and it sounds damn good! and is very quiet!! It's loudest at idle!! Never mind the smoke still clearing itself of the trans fluid in motor....Pic later of install Enjoy!!



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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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Old 01-09-2012, 08:58 PM
ta man ta man is offline
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How big are your tailpipes?Sounds good...much like mine loud idle then it tones itself down.

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Old 01-09-2012, 09:02 PM
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grandville455 grandville455 is offline
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Quote:
Originally Posted by ta man View Post
How big are your tailpipes?Sounds good...much like mine loud idle then it tones itself down.
3" Torque tech tailpipes, I couldn't believe how quiet it was, back when i tried the 2 1/2 ultra's on the grand it was loud, I had a 3" X pipe into those with 2 1/2 tails, this 3 1/2 is super quiet! To be honest this motor feels like I added 50 hp!! The overlap is so much more pronounced in the idle now. I love it. They are as tight as can be to floor to ,but do hang a little low, but what can u expect for that big of pipes! I should borrow my buddy's db meter sometime.
Attached Thumbnails
Click image for larger version Name: New 3.5 Exhaust-1.jpg Views: 180 Size: 72.6 KB ID: 270140   Click image for larger version Name: New 3.5 Exhaust-2.jpg Views: 195 Size: 67.9 KB ID: 270141  

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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
Last edited by grandville455; 01-09-2012 at 09:17 PM.
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