buy 1 7//8 and call it a day.....
That's what I did.
buy 1 7//8 and call it a day.....
Thank you both... I think I am just going to pull the trigger on the 1 7/8ths. My goal is ~ 500 whp on an N/A dd.
buy 1 7//8 and call it a day.....
or do the stepped and get the best of both world
Pypes makes a stepped longtube, starts off with 1 3/4 primary at the flange and goes to 1 7/8
Maybe Shaun will chime in with his thoughts on these headers.
Fittament wise, how are the Pypes headers?
Below is a dyno graph of the difference between 1 &3/4 headers vs 1 &7/8th. Different cars, but same setup on the fuel with the same timing and fueling, the only difference is the Primary diameter (same brand headers).
The smaller diameter primaries made 30+ TQ more down low and did not restrict top end power.
let us know if we can assist you at all
beef
513-478-1965
Below is a dyno graph of the difference between 1 &3/4 headers vs 1 &7/8th. Different cars, but same setup on the fuel with the same timing and fueling, the only difference is the Primary diameter (same brand headers).
The smaller diameter primaries made 30+ TQ more down low and did not restrict top end power.
I'm trying to do a CJ mani, cai (RevAuto or FRPP), TB, Headers, H-pipe, Over-Axle w/o Resonators (Lethals?), GT500s and MGW shifter. Figured that would make for a great stage 1&2 of my build.
Stages 3-5 would be CJ cams, 302R heads, OPG, Crankshaft gear/sprocket, and then suspension. :burnout:
Shaun@AED.... So, 1 3/4' would give a better torque in the lower RPM range. With my build above, would this would be the more optimal set for a DD, with limited drag/track time (3-4 times a year max)?
Maybe Shaun will chime in with his thoughts on these headers.
Fittament wise, how are the Pypes headers?
With big cams you will lose so much power under 4000 - 5500 (depending on the cams and how you install them) I'd imagine you'd want to keep as much low end power as possible.
Since the smaller 1 &3/4 are NOT a restriction in these all motor applications, my answer should be obvious.
Actually I am curious how the 1&5/8th Kooks would perform compared to the 3/4 and 7/8th now....[/QUOTE]
I read about a Coyote Stock build and they were going to use the 15/8ths Kooks.
I wonder if any current Coyote Stock teams run them or have tested them?
With big cams you will lose so much power under 4000 - 5500 (depending on the cams and how you install them) I'd imagine you'd want to keep as much low end power as possible.
Since the smaller 1 &3/4 are NOT a restriction in these all motor applications, my answer should be obvious.
Actually I am curious how the 1&5/8th Kooks would perform compared to the 3/4 and 7/8th now....
brand wise comparison ... is there going to be difference shown in the powerband ?