[Fot] Tri Y header vs Equal length

[Jim Gray]

Longer primary tubes give you better
Low & mid range, short primaries for top end power
Jg

Sent from my iPhone

> On Jul 12, 2016, at 8:26 AM, Mike Harmuth <ofracer at gmail.com> wrote:
> 
> I've been running Tri Y headers on the Spitfire for years, I heard they help with low to mid range power (yes or no?). I see Checkered Flag racing has obtained the fixtures to to start producing Stahl headers again. I know the car had a Stahl header in the past and it has the bell housing is notched, the frame flattened out but the former owner has passed so I can't ask him anything.
> 
> What should I expect from the long, equal length header, just more top end with less low to mid power or better performance overall?
> 
> 1296 engine with the Kastner books mods to the heads, twin SU HS4s.
> 
> thanks
> mike
> 
> 
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