My option for headers...1987 Cutlass Supreme 350 sbo.

[olds307 and 403]

What about Thornton jr manifolds? They do not leek they fit like a glove and flow better than olds w and z big block manifolds.just a suggestion

Not sure about that, betting only a slight improvement over stock manifolds. They are only slightly bigger and partially divided inside. Hooker is dumb, they have these. https://m.summitracing.com/parts/hok-3108-1hkr/none/images#
Or these
https://m.summitracing.com/parts/hed-58073
The ARH headers cost about $1200 US, they better be perfect.

 

[403Olds]

I've had both hedman and hooker's. the hooker's are nicer, but the hedman's are almost identical, pretty much a knock off of the hooker's. Both fit fine, but don't point straight back, so had to make 10 degree adapters to hook up the rest of the exhaust.

 

[Clutch]

Not sure about that, betting only a slight improvement over stock manifolds. They are only slightly bigger and partially divided inside. Hooker is dumb, they have these. https://m.summitracing.com/parts/hok-3108-1hkr/none/images#
Or these
https://m.summitracing.com/parts/hed-58073
The ARH headers cost about $1200 US, they better be perfect.

If I pay 1200 for a set of headers they better come installed lol

 

[spencer83]

If I pay 1200 for a set of headers they better come installed lol

Yeah that's not in my budget. Jesus

 

[spencer83]

I've had both hedman and hooker's. the hooker's are nicer, but the hedman's are almost identical, pretty much a knock off of the hooker's. Both fit fine, but don't point straight back, so had to make 10 degree adapters to hook up the rest of the exhaust.

What's up with the name "Supreme" they're saying they won't fit. This sucks

 

[403Olds]

I've seen that statement on a few headers....no idea. I've had both in my 85 Salon with a 403. Can't imagine what's different on a Supreme.

 

[spencer83]

I've had both hedman and hooker's. the hooker's are nicer, but the hedman's are almost identical, pretty much a knock off of the hooker's. Both fit fine, but don't point straight back, so had to make 10 degree adapters to hook up the rest of the exhaust.

What's up with the name "Supreme" they're saying they won't fit. This sucks

I've seen that statement on a few headers....no idea. I've had both in my 85 Salon with a 403. Can't imagine what's different on a Supreme.

do you have any part numbers

 

[Clutch]

I've seen that statement on a few headers....no idea. I've had both in my 85 Salon with a 403. Can't imagine what's different on a Supreme.

Years ago I called a company about that and there answer made no sense. They said something about a supreme being offset to one side? I figured it to be BS and ignored it ever since because the only difference I ever found in g-boby frames is in cross member mounting some don't have a second set of holes or the box section is different on the drivers side. No big deal

 

[spencer83]

Some say yes some say no. I'm lost bros. I've been trying!

 

[olds307 and 403]

If I pay 1200 for a set of headers they better come installed lol

Along with full exhaust🙂.
The Supreme thing has been BS for years. The frame and chassis are identical, pay no attention. The Hedman headers are the best value. I like my Sanderson shorty header's.