3.90 gear?
Team Owner
Joined: Feb 2001
Posts: 27,246
Likes: 130
From: Short Hills, NJ
Nope. 
Though for some it might be as there will be some sacrifice in fuel economy and even basic parts wear (constant higher RPMs on the highway etc.) over the more universally accepted 3.73s but they do work well in most NA applications and with the right converter will really get the car to launch nicely.
Though for some it might be as there will be some sacrifice in fuel economy and even basic parts wear (constant higher RPMs on the highway etc.) over the more universally accepted 3.73s but they do work well in most NA applications and with the right converter will really get the car to launch nicely.
Team Owner
Joined: Feb 2001
Posts: 27,246
Likes: 130
From: Short Hills, NJ
That might depend on just how you're bringing/ramping it in (progressively or total hit all at once right off the line) and also what height tires and how high of a stall converter (if any) that you'll be using. But generally speaking, for nitrous applications 3.73s (or even 3.42s for the real big hits) might be the better choice.
Le Mans Master
Joined: Mar 1999
Posts: 6,029
Likes: 85
From: Palm Coast, FL
not sure you can have your cake and eat it too
100 progressively might work but when going to a 150 shot you are probably going to need a cooler plug and a different tune . . .
You can add a set of DRs to the list while your at it otherwise its just going to spin
Not a progressive hit, 150 shot all day, I am not sure what size stall 3200-4000 stall I am thinking a 3800(triple d 1C stall) I will be doing a cam also.
Quick list of the target goal before July:
LS6 intake(stock)
Headers
Trans Cooler
Stall(3800 probably)
Gears(3:90?)
Cam 23x/23x 59x 59x 113lsa
150 shot(Nitrous 2 Outlet single stage)
On a radial I am aspecting a 10.8 with the hit
Quick list of the target goal before July:
LS6 intake(stock)
Headers
Trans Cooler
Stall(3800 probably)
Gears(3:90?)
Cam 23x/23x 59x 59x 113lsa
150 shot(Nitrous 2 Outlet single stage)
On a radial I am aspecting a 10.8 with the hit
You can add a set of DRs to the list while your at it otherwise its just going to spin
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thought I had tires on the list, MSD wires and NGK TR6 plugs(forgot to add that lol)
Team Owner
Joined: Feb 2001
Posts: 27,246
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From: Short Hills, NJ
And that is among the many dilemma that people often face when building a fast NA car that will also be sprayed."Do I build it for fast NA duty and sacrifice some on the nitrous side or do I set it up more for the nitrous and lose some of my NA speed when not shooting it?"
Which converter, gears and tire heights you choose will effect just how well the car is going to respond to the spray. That 3800+ stall converter might be awesome for NA or even a 75 shot but a full hit 150 shot with a big stall, 3.90 gears and 26" tires might create some issues, especially with that healthy cam in there.
We unfortunately can't always have it both ways.
Team Owner
Joined: Feb 2001
Posts: 27,246
Likes: 130
From: Short Hills, NJ
But I would still suggest using only a 100 shot in that scenario as I've seen cars actually go slower on a 150 shot then they did on a 100 shot because the set up was simply not optimized for the big one. If changing plugs becomes too much of a hassle you can just leave the TR6s in there as the car will still run fine NA on those but don't ever spray a big shot on TR55s (or similar) of course.
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Le Mans Master
Joined: Aug 2007
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From: Orange Park FL
I'm running a tight Yank 3600 TC with a built 4l60 Tranny and have a 410 gear in my Silverado. I just noticed yesterday I was turning around 2300 rpm @ 70mph crusing on the xway. The truck was my daily driver last year...fun street setup !
Not sure about blasting 100+ Nos out of the box. I don't know if that will hook up too well ??
Not sure about blasting 100+ Nos out of the box. I don't know if that will hook up too well ??
