1 3/4 header for lowered truck

[chappys4life]

Working in a 383 swap in my 70 gmc. It had a set of think flowtek headers on it and looking for a new set as this 383 as I need something that can flow better. Right now it has a 2.5 drop spindle but I plan on bringing it a title lower as I plan on doing qa1 but nothing crazy low.

I am trying to find a 1 3/4 primary that will work. My knee jerk was a set of hooker super competition but the truck model I’m afraid is going to hang too far below the frame. I was looking at the ultimate header for a Camaro but is only 1 5/8 and I need 1 3/4.

Looking for any suggestions. I do have an automatic (right now it’s a th350 but have a 4l80 I plan on swapping to eventually) and a smaller pmrg smaller starter.

[70STOVEBOLT]

Chevelle mid length headers in your favorite flavor. Might interfere with stock shift linkage, YMMV. I had to rework mine. Also, stock trans xmember will not work with these headers. The upside is they allow you to tuck the exhaust between the frame rails. There are several threads on here about tucking the exhaust, just use the search bar.

[chappys4life]

I was afraid of that. I ditched the factory shifter for a lokar. Also I ordered a tinworks transmission crossmember to help with routing.

Anyone running Dougs D369 or Hooker 2116? Looking for a solid set of headers.

[MikeB]

Might want to look at Doug's Headers, which is a Pertronix company. I bought a pair for my 69 C10, and they sat quite high. In fact they terminated right in front of the trans crossmember, I didn't want to modify the crossmember or use tight bends, so ended up using a pair of stainless 3/4 length 1-5/8" Hedmans on my mild 350.

You could always use 3/4 length headers, which will work great for a street truck. But there are guys that know a lot more about that than me!

[chappys4life]

Originally Posted by MikeB

Might want to look at Doug's Headers, which is a Pertronix company. I bought a pair for my 69 C10, and they sat quite high. In fact they terminated right in front of the trans crossmember, I didn't want to modify the crossmember or use tight bends, so ended up using a pair of stainless 3/4 length 1-5/8" Hedmans on my mild 350.

You could always use 3/4 length headers, which will work great for a street truck. But there are guys that know a lot more about that than me!

I actually listed a dougs part number for a chevelle Dougs D369 or Hooker 2116. The kicker for our truck model is they are only 1 5/8, I need 1 3/4

[SCOTI]

Originally Posted by MikeB

Might want to look at Doug's Headers, which is a Pertronix company. I bought a pair for my 69 C10, and they sat quite high. In fact they terminated right in front of the trans crossmember, I didn't want to modify the crossmember or use tight bends, so ended up using a pair of stainless 3/4 length 1-5/8" Hedmans on my mild 350.

You could always use 3/4 length headers, which will work great for a street truck. But there are guys that know a lot more about that than me!

Agreed.

3/4-length/mid-length sbc headers should be available in 1.75" diameter primary pipe size & offer the ground clearance lowered trucks need..... https://www.summitracing.com/parts/p...model/chevelle

[chappys4life]

Originally Posted by SCOTI

Agreed.

3/4-length/mid-length sbc headers should be available in 1.75" diameter primary pipe size & offer the ground clearance lowered trucks need..... https://www.summitracing.com/parts/p...model/chevelle

Yeah I saw dougs D337 set I am real tempted. I am torn the Hooker 2116 are full length and only 250 more. Might risk the Hookers. I saw people using the Hookers on a big block c10 and fit well but cannot find any posts for a small block. I was going to call summit and see the return policy if i try them

[SCOTI]

Originally Posted by chappys4life

Yeah I saw dougs D337 set I am real tempted. I am torn the Hooker 2116 are full length and only 250 more. Might risk the Hookers. I saw people using the Hookers on a big block c10 and fit well but cannot find any posts for a small block. I was going to call summit and see the return policy if i try them

For a street driven vehicle that has the power output requiring the need of 1.75" primaries, the 3/4-length units do what needs to be done. Sure, tuned, full-length headers are great, but I highly doubt you'd notice a difference during 'seat of-the pants' John Q. Public road analysis & you'll appreciate the added clearance 10 out of 10 times.

[chappys4life]

Originally Posted by SCOTI

For a street driven vehicle that has the power output requiring the need of 1.75" primaries, the 3/4-length units do what needs to be done. Sure, tuned, full-length headers are great, but I highly doubt you'd notice a difference during 'seat of-the pants' John Q. Public road analysis & you'll appreciate the added clearance 10 out of 10 times.

You are probably right. With adding the supercharger I want to get my maximum horsepower. I almost bought the Hookers last night but found Dougs have a stainless model so swaying pretty hard to the D369-SS. I would get them cerakoted for heat more than likely but like I can dent one if needed and dont have to worry about the coating breaking and starting to rust.

I did attach a picture of the Hookers on a big block c10 and you can see they are pretty tucked. I would be on frame if hitting the headers

[MikeB]

Originally Posted by chappys4life

I saw people using the Hookers on a big block c10 and fit well but cannot find any posts for a small block. I was going to call summit and see the return policy if i try them

Yes, Summit is pretty good about returns. I had no problem at all returning my Doug's headers. I think they will pay for return shipping only if they sent you the wrong part, if the part is not as described, or something else that's their fault.

However, I live only 40 miles from their Texas warehouse, so can just drive there. That also lets me check out their Outlet Center, where they sell returns and scratch & dent items.

[chappys4life]

Originally Posted by MikeB

Yes, Summit is pretty good about returns. I had no problem at all returning my Doug's headers. I think they will pay for return shipping only if they sent you the wrong part, if the part is not as described, or something else that's their fault.

However, I live only 40 miles from their Texas warehouse, so can just drive there. That also lets me check out their Outlet Center, where they sell returns and scratch & dent items.

Oh man that is awesome! I live in Austin so I get quick shipping but not that good.

[MySons68C20]

Following....great thread!

[70STOVEBOLT]

You might want to look at Sanderson also, a lot of guys sing their praises on the stainless 3/4 headers.

[chappys4life]

I ended up buying the D369-SS today. I was going to wait until I got the tinworks transmission crossmember in but saw I could do the 80 off on summit and just seemed like a solid deal. Will test fitment hopefully this weekend. Depends on how much of a nightmare the tinworks cross member swap is. Wish I had done it when I had the motoro and trans out.

[chappys4life]

Got the headers in and wow its tight. Had to bend my cooler lines, move a brake cable, and take out the starter but its in.

New issue is the headers sit lower than the tinworks crossmember. So I either have to cut the transmission crossmember or get a different one. Was going to get the same headers for my 79 suburban but think I will try the clippsters on it and might try and use the tinworks on it.