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Old 03-24-2016, 04:18 PM   #1
FB85C10
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Headers

Im looking for headers for my 1985 chevy c10 lowered 5.5" in the front with a 1985 350 bored 40 over with 96-up stock vortec heads. I need a set of headers that will fit between the block and frame and also i can not have the header sit below the frame due to the truck being so low and also i have a cpp transmission crossmember i have installed and i wanna avoid hitting that so im going to have the exhaust go up and over that crossmember, could you give me some suggestions and part numbers to go with for my application? Pics too!!


Thanks!!
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Old 03-24-2016, 06:12 PM   #2
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Re: Headers

Patriot clippster headers
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Old 03-25-2016, 12:45 AM   #3
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Re: Headers

Small block?

These
http://m.summitracing.com/parts/pte-h8021-1


Or these, will need a double hump x member.


http://m.summitracing.com/parts/dou-d310-b
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Old 03-25-2016, 08:39 AM   #4
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Re: Headers

If I recall (SB) 350 most long tube header the driver side is lower( drop lower then other side).
Not sure 1990 up long tube header now days. But you may need to make your own to custom long tube header. Or use shorty headers.
Or buy set headers you like, cut them change to your needs.
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Old 03-25-2016, 09:10 AM   #5
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Re: Headers

will a gasket that has the round holes work on my heads cause i have the vortec heads and my ports are square with a radius corner cause im not sure? pic below! or will i need a different header? Thanks!!

[IMG][/IMG]

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Old 03-25-2016, 11:48 AM   #6
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Re: Headers

OBX 92 Camaro long tube headers. They stay above the frame and clear everything in the engine bay.
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Old 03-25-2016, 12:52 PM   #7
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Re: Headers

The long tubes are a d port, they're on my truck with dart heads.
Square port angle plug. Fit and clearance is great.
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Old 03-25-2016, 02:39 PM   #8
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Re: Headers

WILL THESE WORK FOR A 1969 CHEVELLE

http://www.summitracing.com/parts/ho...r/applications
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Old 03-26-2016, 07:48 PM   #9
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Re: Headers

Quote:
Originally Posted by school boy View Post
OBX 92 Camaro long tube headers. They stay above the frame and clear everything in the engine bay.
like these?
http://www.jegs.com/i/Hedman/500/68460/10002/-1
im looking for a set of headers 77 C10 small block. i have full length ones now but like FB85C10 im looking for something to stay above the frame. mine come down below the frame and at a downward angle. they are old and i have no idea what brand they are or what they are from

i really dont want to spend 300 or 400 bucks on a set
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Old 03-26-2016, 08:21 PM   #10
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Re: Headers

I posted whatbi have on mine lol guess nobody wants shortys lol
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Old 03-26-2016, 09:05 PM   #11
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Re: Headers

i know i dont want to pay that price lol

i just want something to help clear the crossmember so i can lower the truck
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Old 03-26-2016, 10:39 PM   #12
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Re: Headers

Quote:
Originally Posted by TrailerTrash View Post
like these?
http://www.jegs.com/i/Hedman/500/68460/10002/-1
im looking for a set of headers 77 C10 small block. i have full length ones now but like FB85C10 im looking for something to stay above the frame. mine come down below the frame and at a downward angle. they are old and i have no idea what brand they are or what they are from

i really dont want to spend 300 or 400 bucks on a set
http://www.ebay.com/itm/OBX-Exhaust-...9TBUh5&vxp=mtr

I'm not sure of other brands, but I'm using these
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Old 03-27-2016, 10:32 AM   #13
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Re: Headers

Quote:
Originally Posted by school boy View Post
http://www.ebay.com/itm/OBX-Exhaust-...9TBUh5&vxp=mtr

I'm not sure of other brands, but I'm using these
ok i got you i didnt realize OBX was the brand you have. have any pics? id love to see where they exit
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Old 03-27-2016, 11:04 AM   #14
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Re: Headers

So i found uncoated Clippsters for $200
http://www.summitracing.com/parts/pt...del/c10-pickup
these might work but i would really like headers that exit level with the frame instead of at a downward angle.

like longtubes that are 4 inches shorter to go above the crossmember
http://www.jegs.com/i/Hedman/500/68460/10002/-1
these might be the ticket

Last edited by TrailerTrash; 03-27-2016 at 11:18 AM.
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Old 03-27-2016, 04:34 PM   #15
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Re: Headers

Old pics but anyway..


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Old 03-28-2016, 09:12 AM   #16
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Re: Headers

those look perfect
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Old 03-28-2016, 09:30 AM   #17
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Re: Headers

Quote:
Originally Posted by TrailerTrash View Post
those look perfect
I forgot to mention they do run very close to my 4l80e pan but worked great with the 700r4.
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Old 03-28-2016, 09:45 AM   #18
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Re: Headers

Quote:
Originally Posted by FB85C10 View Post
will a gasket that has the round holes work on my heads cause i have the vortec heads and my ports are square with a radius corner cause im not sure? pic below! or will i need a different header? Thanks!!
As for gaskets, I'm fairly sure FelPro #1444 will work, but I'd be more concerned about matching header port positions to the heads. You should contact a couple header manufacturers to get the exact dimensions of the header ports including height, width, and vertical position relative to bolt holes. This is because Vortec header bolt holes ARE NOT aligned across the vertical center of the port openings, but are slightly lower. Also, the spark plugs are closer to the ports than on conventional heads, which means one or two header tubes per side may be right up against spark plug boots, or maybe even spark plugs!

When I researched this last year, the only person I spoke with who knew about the port height relative to the bolt holes, as well as the spark plug position was Sanderson dealer Century Performance Center in Reno, NV. He gave me a couple P/Ns that would work, but I can't find my notes.

Another note on port height relative to header bolt holes: Exhaust gasses are most active at the top of the port. Just like a car going around a turn, the gasses don't want to change direction when they hit the turn, so they are forced to the outside of the turn -- the top of the port. So, the last thing you want to do is cover up even a tiny part of the port with a head gasket or header flange.

I ended up using 96-2000 cast iron manifolds, and even had to grind them open at the top around .100". But since I plan to add headers someday, please let me know if you find some that fit. I'm learning that Doug's makes a high quality product, so I would probably call them too.

Here you can see that OEM style gaskets cover up the top of a Vortec port.


These are FelPro gaskets for a 96-up 5.7L engine, but I don't have the P/N.
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1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
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Last edited by MikeB; 03-28-2016 at 10:09 AM.
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Old 03-28-2016, 10:23 AM   #19
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Re: Headers

Just noticed my Vortec heads' port shape is different than yours, and the bolt holes are a little lower than yours relative to port height. Are yours 064 castings?
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1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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Old 03-28-2016, 06:42 PM   #20
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Re: Headers

Quote:
Originally Posted by MikeB View Post
Just noticed my Vortec heads' port shape is different than yours, and the bolt holes are a little lower than yours relative to port height. Are yours 064 castings?
I meant 062 castings, but this site won't let me edit my post.
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1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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