Will it take a 75 shot?

[WeekendPlinker]

Just looking for a little extra git up n go when needed....

How would my 12, nearly 13 year old 4.8 with close to 150k hold up to a 75 shot of dry nos??


Yea yea, I need to do a motor swap... It's in the works but not for another year or so...

 

[livingez_123]

If you don't have the money to do a new engine now, why would you even think of doing a 75hp shot of NOS? where is the extra fuel going to come from? unless you want to scrape melted aluminum from your cylinders, Keep the NOS for an engine that's built to take it.
Just my thoughts.
save your money and build a nice mild 408.

 

[Sasquatch]

I just found this http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/ The other day and seeing what these engines can withstand i think you would be ok if you`re not using a whole bottle of nitrous every few days.

But i am no expert on using nitrous so i would check with someone who knows more about it beforehand.

 

[Gzes]

Should be fine if you don't beat on it too bad. As long as you start with 50 shot then slowly go up you might be able to run a 100 shot but have to adjust timing and colder plugs for nos

 

[2000Yukon]

Shoot a 100 shot all day long.

Friend of mine has a turbo 5.3 swap fox body mustang running 20 something psi stock bottom end and drives the hell out of it. The only problem you'll run into is the 4l60e letting go.

https://www.youtube.com/watch?v=h74sHXlhofk

 

[FreshLikeOprah]

Yes, that baby shot will hold up fine. There is guys spraying 200-250 hits in stock long blocks. I prefer a wet shot, but some guys are all about the dry. Dry requires less, and uses the MAF to compensate fuel etc. Maybe run a NGK TR6 plug, which is a lil colder. And get it tuned by a good local tuner. Like I said though, a 75 isn't even a big deal. It will take that all day long.

 

[Wake]

If you don't have the money to do a new engine now, why would you even think of doing a 75hp shot of NOS? where is the extra fuel going to come from? unless you want to scrape melted aluminum from your cylinders, Keep the NOS for an engine that's built to take it.
Just my thoughts.
save your money and build a nice mild 408.

I'm with you here.

Most of my experience comes from the car side, but I saw quite a few guys using NOS or even pretty small superchargers (4.5psi) on engines (mostly stock LT1s) that wound up crying a the end of the day after an expensive lesson in running lean and detonation. Most of them had unplanned engine rebuilds shortly after adding the boost or spray, all had burned pistons and broken ring lands if I'm remembering correctly.

The only guy I knew with a stock engine running NOS that lived over the couple of years that I socialized with him had a wet system on a 150 shot.

The most memorable failure I saw that hit home was at the track one night when another guy running a 96 Vette like mine was running a full second faster (12.6) in the 1/4 than I was. I asked him what he did to his car and he showed me his dry nitrous setup. He was changing his 100 shot to a 150 shot in the pits between runs, it was his first run on NOS and he got greedy early. Something happened on his next run and he crossed the 1/4 mark at around 18 seconds. He drove by me on his way out and the car didn't sound right. I don't know if he made it home that night from the track of had to get a tow.