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2 Attachment(s)
I do wonder how the manifolds do in my application over a set of stainless tube headers with large collectors...
1000-1100hp [ATTACH=CONFIG]556734[/ATTACH] |
Originally Posted by corey331
(Post 4452880)
I wish they made them for a LS application. I would have gone with these for sure!!!
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Originally Posted by frickstyle
(Post 4452885)
I do wonder how the manifolds do in my application over a set of stainless tube headers with large collectors...
1000-1100hp [ATTACH=CONFIG]556734[/ATTACH] |
Originally Posted by SB
(Post 4452878)
Diamond - how long are the tails on a normal Bravo application ?
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Originally Posted by DiamondPerformance
(Post 4452947)
The standard tails are 6" long. A small piece of rubber exhaust hose connects to the exhaust tips.
Thank you ! This is great actually, because most correct lengths (when sizing exhaust) call for 12"-20" total length- epending on cid, cam, rpm, and etc. Therefore, the tailpipe can be adjusted to arrive at what the proper length should be for each engine application I'll find my 502 example (again) so everyone can see what I mean. |
Found it:
Originally Posted by SB
(Post 4426415)
The following is from inputs I entered on a 502 with 625 or so HP.
Quoting myself from a earlier post BTW: The program givea much, much more info than I have posted below. But it will give you a good idea on things. Remember, the 'collector' is not just the headers collector. If risers and tails are same ID, which most re, then they too are part of the collector. Do not let yourself end up at a worst length collector. It can/will kill performance. Pipemax Note-> all Pipe Diameters are OD and based-off .0625 inch Pipe thickness 502.176 CID from 3800 to 6300 RPM --- Single Primary Pipe Specs --- Diameter= 1.899 to 2.024 Length= 33.7 to 36.7 inches long --- 2-Step Primary Pipe Specs --- 1st Dia. inches= 1.899 Length= 16.9 to 18.4 2nd Dia. inches= 2.024 Length= 16.9 to 18.4 --- 3-Step Primary Pipe Specs --- 1st Dia. inches= 1.899 Length= 16.9 to 18.4 2nd Dia. inches= 2.024 Length= 8.4 to 9.2 3rd Dia. inches= 2.149 Length= 8.4 to 9.2 --- Header Collector Specs (Conventional Straight Tube) --- Diameter= 3.466 to 3.716 Tuned Lengths= 19.4 best and also 9.7 or 38.8 --- Header Collector Specs (Megaphone or Diffuser Cone Shape) --- Diameter= 2.966 taper to 3.966 Megaphone/Diffuser Length= 19.4 inches Best HP/TQ Tuned Collector Lengths= 19.4 , 38.8 , 77.6 , 155.2 inches long Worst HP/TQ Loss Collector Lengths= 29.1 , 58.2 , 116.4 , 232.8 inches long Note-> all Pipe Diameters are OD and based-off .0625 inch Pipe thickness ---- Primary Pipe's Harmonics ---- 1st Harmonic = 149.4 inches long ... typically never used 2nd Harmonic = 56.5 inches long ... longest recommended 3rd Harmonic = 33.7 inches long ... highly recommended , best Torque Curve 4th Harmonic = 23.4 inches long ... shortest recommended 5th Harmonic = 17.5 inches long ... typically never used 6th Harmonic = 13.8 inches long ... typically never used 7th Harmonic = 11.1 inches long ... typically never used 8th Harmonic = 9.2 inches long ... typically never used ---- Collector's Harmonics (includes Intermediate, Muffler , TailPipe) ---- 1st Harmonic = 155.2 inches long ... longest with Mufflers and TailPipes Note: Worst = 116.4 inches long for HP/TQ Loss 2nd Harmonic = 77.6 inches long ... longest recommended with Mufflers Note: Worst = 58.2 inches long for HP/TQ Loss 3rd Harmonic = 38.8 inches long ... more bottom-end Torque Note: Worst = 29.1 inches long for HP/TQ Loss 4th Harmonic = 19.4 inches long ... highly recommended , best Torque Curve 5th Harmonic = 9.7 inches long ... reduced Torque , more top-end HP sometimes 6th Harmonic = 4.9 inches long ... reduced Torque , not recommended |
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