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Author Topic: 74 c15 headers  (Read 1471 times)

Offline Swampyankee74

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74 c15 headers
« on: March 08, 2023, 08:39:34 AM »
I have a 1974 c1500 short bead with a smallblock, m21 tranny with a mechanical clutch. looking to purchase set off long tube headers that do not interfere or hit anything, mainly worried about hitting the mechanical clutch linkage or tranny cross member. I'm looking to buy a nice set of long tube headers, either stainless or ceramic coated, with 3/8 thick flanges, preferably a 3" collector, so I still have the option to reduce down to 2.5" after the collector if I choose.  I start reading item descriptions on summitt and similar sites and they just tell you it fits every car ever made haha.

Looking to see if someone out there has a setup like this, that can point me in the right direction? 

I'll post a pic of my crossmember.
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Offline Swampyankee74

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Re: 74 c15 headers
« Reply #1 on: March 08, 2023, 08:41:09 AM »
Pic of crossmember

Sent from my SM-S515DL using Tapatalk

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Offline Shifty

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Re: 74 c15 headers
« Reply #2 on: March 08, 2023, 08:53:54 AM »
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87 V20 Standard Cab Longbed (current)

87 R30 3+3 Longbed (days of yore)

98 C2500 ext cab longbed

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #3 on: March 08, 2023, 08:58:27 AM »
Thank you for the link. Was hoping to keep my original cross member.

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Offline Shifty

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Re: 74 c15 headers
« Reply #4 on: March 08, 2023, 09:09:17 AM »
You can, if you are a good welder/fabricator, and do the same sort of thing, or mod the headers so they fit tighter to the stock crossmember. 
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87 V20 Standard Cab Longbed (current)

87 R30 3+3 Longbed (days of yore)

98 C2500 ext cab longbed

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #5 on: March 08, 2023, 09:18:19 AM »
Ok, I will look into that. I'd rather modify the headers then the cross member
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Offline Shifty

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Re: 74 c15 headers
« Reply #6 on: March 08, 2023, 09:20:42 AM »
Are you lowering the truck as well?
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87 V20 Standard Cab Longbed (current)

87 R30 3+3 Longbed (days of yore)

98 C2500 ext cab longbed

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #7 on: March 08, 2023, 09:36:56 AM »
It is lowered 2.5" in the nose, 4" in the rear
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Offline ehjorten

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Re: 74 c15 headers
« Reply #8 on: March 08, 2023, 10:02:17 AM »
I don't know about a 1/2-ton 2WD, but I got Hedman Elite Stainless for my '77 K20 and they fit perfect. I did cut off the ball and socket collectors and welded-on V-band collectors. Their website was pretty good on letting you know what they fit.
« Last Edit: March 08, 2023, 10:06:31 AM by ehjorten »
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #9 on: March 08, 2023, 10:41:11 AM »
I will check out Hedman. Do you have a mechanical clutch linkage?
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Offline Shifty

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Re: 74 c15 headers
« Reply #10 on: March 08, 2023, 10:58:44 AM »
Quote from: Swampyankee74 on March 08, 2023, 09:36:56 AM
It is lowered 2.5" in the nose, 4" in the rear
They'll probably be the lowest thing on the undercarriage, if that's ok with you....Better than the oil pan, eh?
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87 V20 Standard Cab Longbed (current)

87 R30 3+3 Longbed (days of yore)

98 C2500 ext cab longbed

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #11 on: March 08, 2023, 11:06:23 AM »
Definitely can't make it under the cross member without half the pipe showing atleast, which is fine. It would have to be tucked into the humps by the frame rails. Not saying that's what I'm gonna do. I'm open to any ideas. I beleave long tube headers should end before they get to the crossmember?
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Offline ehjorten

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Re: 74 c15 headers
« Reply #12 on: March 08, 2023, 03:53:44 PM »
« Last Edit: March 08, 2023, 03:56:32 PM by ehjorten »
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-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline VileZambonie

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Re: 74 c15 headers
« Reply #13 on: March 08, 2023, 06:15:44 PM »
My buddy put on a set of the stainless eBay specials. I was surprised how nice they were. So many options now and the cluth linkage is high enough that it shouldn't be an issue.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Swampyankee74

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Re: 74 c15 headers
« Reply #14 on: March 08, 2023, 06:35:44 PM »
Good links! Thank you very much
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