So….more header talk….this had me scratching my head

79410aspenrt said
I got around to making a few passes yesterday. I put 4.86 gears back in so this was the only change I did.

1.33 60’
6.16 to the 1/8
109.66 mph to the 1/8
9.75 @ 136 mph

before the big tube header,

1.39 60’
6.29 to the 1/8
107.56 to the 1/8
9.96 @ 134

there is no doubt that the bigger tube header is working. Quicker in all areas. More TQ and more HP

View attachment 1715966726

I talked to Chris Hardy agains yesterday at the track for a long time.
He told me for my car( heavy, 3350) and primarily 1/8 miłe ar most events, i would be Best served with a 1 3/4 tube.
Lighter car would like a bigger tube better