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dennis r

04-26-2015 09:02 AM

What size headers

Building a 598 NA motor it is going to be 850 HP or so what size headers should I use will 1 7/8 work

MILD THUNDER

04-26-2015 09:14 AM

I think 1 7/8 will "work", but, I think 2'' or 2 1/8'' would be better.

SB	04-26-2015 09:28 AM

My exhaust program is at work.

For now, without that and without any more engine info, i'm gonna' guess minimum 2 1/8", more ideal of 2.25"

1 3/4" is for mild 454's and smaller.

Drake22.250

04-26-2015 09:28 AM

Stainless marine 5 inch

SB	04-26-2015 09:30 AM

Quote:

Originally Posted by Drake22.250 (Post 4296962)

Stainless marine 5 inch

He's asking about primary tube's....although he didn't directly state that.

ezstriper

04-26-2015 09:45 AM

I would say 2" would be min, 2 1/8 would be best

Unlimited jd

04-26-2015 10:09 AM

What's the details on the build?

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