ls2formula

iTrader: (7)

9" with 3.25

Phil99vette

iTrader: (11)

Curious, why did you select 3.25s?

ls2formula

iTrader: (7)

I had 3.50 gear for my nitrous setup and knew I would need more gear. Other than that I didn't have much more of a reason. By your comment it seems like you think another gear might work better?

98Z28CobraKiller

iTrader: (17)

He's going thru the traps at 7700 ish with this gear so it seems about right with just a little headroom to grow. Remember that he is on a 28" drag radial (MT 325/50/15).

98Z28CobraKiller

iTrader: (17)

TC78's.

Phil99vette

iTrader: (11)

No, just curious. Some guys choose smaller gears because the are trying to get the motor to work within a specific RPM or cam selection. Just understanding your thought process.

98Z28CobraKiller

iTrader: (17)

Cam is really small for a solid roller and I'm pretty sure that the Billet Wilson peaks around 7,000 RPM but seems to carry well. It does seem to run faster when he holds first out to 7900-8000 but in drive (2nd) we try to keep her under 8K. The 3.25 gear is VERY nice and comfortable on the street.

Phil99vette

iTrader: (11)

I forgot about having 28s... Its the same as 3.50s and a 30"

98Z28CobraKiller

iTrader: (17)

I would love to hear if anyone has any dyno data for one of these Billet Wilsons. Maybe Shawn has done some testing? I may present this question on the Bullet as well. We have dyno (specially chassis dyno) phobia.

Phil99vette

iTrader: (11)

Shawn hasn't. We only have data on the marcellas. Did you guys put EGTs on that thing yet?

ls2formula

iTrader: (7)

EGT's are in.

Phil99vette

iTrader: (11)

How did the EGTs look on the 787 pass? Do you have a log of the EGTs you care to share?

98Z28CobraKiller

iTrader: (17)

They are not accurate. Not even close. Steve was working on getting that sorted out but then got side tracked with some other stuff. They are working good enough to tell us if there is a burnt wire or a plug issue but that's about it.

Right now he is in the process of replacing the stock oil pan with the Moroso piece and relocating the filter. Stock oil pan does not like those G's.

98Camarod

iTrader: (43)

Just to let you know, the HP calculator shows 1588.92 flywheel HP. Nasty **** fellas, straight nasty!

87silverbullet

iTrader: (11)

IIRC you and Shawn bumped heads a little about this awhile back. Shawn was stating that when you are running some sick numbers using alot of boost the Marcella intake helped distribute the cylinders a little more even than the Billet Wilson which helped tuning and in turn making you faster.

Here you go on page 2
https://ls1tech.com/forums/forced-in...ds-come-4.html

LSmonster

iTrader: (2)

Fantastic numbers! Congrats! I'm contemplating a twin turbo build myself and I was wonders what size primary's are on your headers? You might has said that somewhere so I'm sorry if I missed it. Again, great numbers and a great set-up.

98Z28CobraKiller

iTrader: (17)

Yeah, that's why I thought that he may have some data on the Wilson. Sounded like he tested them head to head.

PM Josh @ KYTP, he built them. Can't remember. They are either 1.75" or 1.875".

LS1LT1CAM

wonder about the egt just bought the holley dominator system myself and I want to install egt's but haven't found what is going to be the best action to take

what is the problem with the ones that you are running

soorry not trying jack the thread just wondering

98Z28CobraKiller

iTrader: (17)

My understanding is that it has nothing to do with the Holley EMS. The EGT system itself is standalone and outputs to whichever EMS you happen to be using. It has to do with how the probes themselves operate. Maybe Steve will see and shed some light. I try to keep my part well compartmentalized.