jonathan_ed3

iTrader: (4)

I'm looking to buy some headers for a '98 LS1 engine.

I found a set of long tubes for a good price, but I guess they are for a standard (older) SB, and are advertised as:


"Fit both straight and angle plug heads. Please specify Standard port or fastburn style "D" port; or Brodix style spread port."

Will either of these work for the LS1 in terms of mating to the heads properly?

Sunset'01Z

iTrader: (10)

nope. you need lsx headers. the heads are completely different from sbc. ls1's have round ports. just get some pacesetters from ls1speed.com for 375 bucks coated. best bang for your buck. i might be ordering some soon myself

jonathan_ed3

iTrader: (4)

Well they aren't going in an F body. They are first going into a 1G RX7, and then later down the road into my '66 XKE, so I don't think ones from an F Body would work for me.

I might have to stick to the stock manifolds for now and have a custom set fabricated for me.

How true is it that the stock manifolds flow excellent?

orangeapeel

iTrader: (18)

Lol, you aren't running an older iron head on the LS1 block so anything with angle plugs in the description is gonna be SBC/BBC. What you will most likely have to do is run a mid-length or a shorty. Kooks may be able to custom make a set for you, but whoever makes them....they will not be less than $1,200.

Not because of port shape though brotha....Don't they teach you anything at Lincoln Tech? Look at my illustration.

Fix your sig size dude.


SBC heads have exhaust ports like this:

()-------()-()-------()

You need this:

()-----()-----()-----()


First GEN RX7? Is that the FC? I think that there is a certain brand that will fit, but I am not sure what the clearance needed is on the collector. An FLP may work. They hang a little low, but Hooker/Pacesetter/SLP/QTP/E-Bay......I don't think will fit very well with that stock K member that the Rex's have.

jonathan_ed3

iTrader: (4)

No, my car is an FB. You'll always see guys with FC and FD RX7 LS1 hybrids, but I haven't found anybody with an FB and an LS1. Most guys with V8 FB's have an old junkyard SBC setup.

I know they exist SOMEWHERE, I'd love to pick his or her brain, but 99.9% of the v8 guys will have an FC (86-92) or FD (93+). I wanted something a little different.

I guess I'll just stay with stock manifolds for now. I can't drop $1,000+ into headers right now. What I might do is buy some Pacesetters after the motor is in and then see how clearance is and just return them and lose the 20% restocking fee. With some luck, they may fit.

Thanks for the help!