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Calspeed 1 7/8" Headers 4X4 issues NNBS

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Old 03-06-2012, 07:56 PM
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Default Calspeed 1 7/8" Headers 4X4 issues NNBS
These headers WILL NOT fit the NNBS 4wd trucks.

See my other post in GMT900 section for full right up
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Old 03-07-2012, 10:10 PM
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What we've found so far for both our 1-3/4" and 1-7/8"

99-07 classic 2WD: perfect fit

99-07 classic 4WD/AWD: minor modification required

07+ NNBS 4-spd auto 2WD applications: perfect fit

07+ NNBS 4WD/AWD: WILL NOT FIT
Last edited by AKlowriderZ71; 03-08-2012 at 02:31 AM.
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Old 03-07-2012, 10:25 PM
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Originally Posted by CalSpeedPerformance
What we've found so far for both our 1-3/4" and 1-7/8"

99-07 classic 2WD: perfect fit

99-07 classic 4WD/AWD: minor modification required

07+ NNBS 4-spd auto 2WD applications: perfect fit

07+ NNBS 4WD/AWD: WILL NOT FIT
So are your 1 7/8" headers on sale for $349?
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Old 03-08-2012, 01:34 AM
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Originally Posted by CalSpeedPerformance
What we've found so far for both our 1-3/4" and 1-7/8"

99-07 classic 2WD: perfect fit

99-07 classic 4WD/AWD: minor modification required

07+ NNBS 4-spd auto 2WD applications: perfect fit

07+ NNBS 4WD/AWD: WILL NOT FIT
Is not a perfect fit for 99-07 classic 2WD,I was installing the 1 7/8" today my friends 04 2WD and the passanger primaries is hitting the frame that it won't even bolt up to the head.
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Old 03-08-2012, 01:53 AM
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That's what you get for 350 bucks. I was possibly considering a set but not now after all the fittment issues I have read, even with 2wd apps
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Old 03-08-2012, 02:27 AM
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I get what you're saying but even if they were $50 I still expect a product to be as advertised "perfect fit".
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Old 03-08-2012, 02:46 AM
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I would pull them off and send them back and get a refund on them..
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Old 03-08-2012, 05:43 AM
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Originally Posted by CalSpeedPerformance
What we've found so far for both our 1-3/4" and 1-7/8"

99-07 classic 4WD/AWD: minor modification required
Minor modification required? that means they do not fit!
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Old 03-08-2012, 08:41 AM
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He still claims he makes these headers, so either he doesn't care that he makes a crappy product or he doesn't actually make them. Which one is it Jim?
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Old 03-08-2012, 09:45 AM
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By minor modification I assume bashing in a pipe so it wont touch the frame? So much for improved flow by adding long tube headers... just my .02
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