aribera94

I'm looking to add headers but I'm lost when it comes to finding out exactly what type will fit to my engine/engine compartment. PLEASE HELP QUICK! The mechanic rebuilding my engine will be at my house in two weeks to drop it in and I'm looking to own the headers before then

joe_padavano

Hooker 3104, available in plain steel or ceramic coated.

copper128

I doubt you'll find the 3104's in stock anywhere. When I ordered them several years ago it took 6 weeks to get them.

svnt442

The X-body front frame is very similar to the F-body front frame. That being said the same headers fit a 73-77 Cutlass 350-403 that fit a T/A 403. So I would surmise that any SBO header that will fit a T/A with a SBO or a 73-77 Cutlass SBO SHOULD fit the X-body SBO.

YMMV.

copper128

That's true for 1975-79 Omegas. Unfortunately the 73-74 Omega used the older style rear-steer front subframe like the 67-69 f-body. The steering gearbox severely restricts header clearance on these cars when fitted with the wider Olds V8.

svnt442

Aahh......good info.

joe_padavano

That is correct, yet the 3104s allegedly fit both the rear steer 73-74 cars and the front steer 75-up cars. Go figure.

Railguy

When I ordered mine 6 or 7 years ago I got them pretty fast.But I don't think they were 3104 I can't remember the make.I'll look tomorrow I should have the receipt.I think I got them from summit.FyI if I remember right I had them on and had to take them off to get the motor in.It's very tight in there.FYI again a Lot easier to put trany in with the motor than after.
railguy

QS442

I have to piggy bank on this top because I'm lost on what headers to purchase. I got a deal on the 3107 HKR hooker headers but after reading further, I am afraid they won't fit. They will be going on a 330.

Let me get this clear also, Omegas up to 74 are structually different from the 75-79? All the info I have been getting off site on Omega stuff seems to be off of 73 Omegas.

joe_padavano

3107s are for an A-body, not an Omega.

The 1973-74 Omegas are the same. The 75-79 use a different subframe, different steering, etc.

Chrisfc3s

have a set on my 73 they are tight as hell on the gearbox.ended up heating the tubes and smashing them in a lil w header wrap no issues w cooking the gearbox fluid

QS442

So what is the proper hooker header for a 75-79 Omega? Or what is an alternate header that fits?

Chrisfc3s

Summit has them part # 3104 hkr fits 260 - 403 engine
$ 489.00

83-425

i am planning on doing a bbo in my 74 omega . i am almost ready to do a test fit to check heater box and hood clearence.i was just told cast iron ex manifold may touch the gear box and maby using a metric 78-87 g body gearbox will help . this was maby smaller and would clear ?? does any one out there know ?? i want to stay away from HOT headers and use cast. but will use what will work .any help would be great thanks .

joe_padavano

The G-body steering box is exactly the same size (and casting) as the Omega box. The only thing about it that's "metric" is the tube fittings. There is no clearance benefit from switching.

83-425

do you think it will work on a big block ? i called mondellow and they said they make a custem set for 73-74 omegas w a bbo . but i was screwed over before by them . i would prefer cast ,maby 307 toros ? thanks steve

joe_padavano

The taller deck height of the BBO would require SBO headers to be modified. I don't understand what 307 Toro manifolds have to do with anything.

83-425

just a thought ,maby a different shaped exaust manifold would clear the steering box.

Railguy

74 Omega with 350 Rocket.
railguy
IMG_3913.jpg

IMG_3914.jpg

IMG_3915.jpg

IMG_3916.jpg

83-425

great pics ,i know my big block will be tighter yet , i will prob have to go with a rack and pinion , and have all the room i need.

Railguy

The vac adv on the HEI is just as tight.There's just one place it will work.
railguy

83-425

i was going to use the smaller HEI dist that they are now making .it is the same size as a points unit

69Chrgr

Ok I did a search and found this old thread. I have a customer that originally wanted me to build him a 455 for his 73 Omega. I thought they may be a tight fit so I convinced him to go with a 350 SBO. So, are there any headers that will fit a 73 Omega with a 350 SBO? This car was originally a 6 cylinder car.

Thanks!

joe_padavano

Hooker used to make headers for the Olds small block in an Omega. I don't believe that they are still in production, unfortunately. The rear steer configuration of the subframe is the problem. Your other problem is the frame pads for the Olds motor. Those are unique to the 1973-74 Omega with an Olds 350 and are not reproduced.

69Chrgr

Ok thanks Joe. Looks like we are confined to exhaust manifolds for this build.