How much Power can a Stock Bottom end L99 Handle

[nightdemon]

Originally Posted by fif_gen_powa

I have broken the diff axles and driveshaft doing dig races, roll racing has been fine

Your car is Beautiful. Thanks for the info, what diff did you end up going with?

[fif_gen_powa]

Originally Posted by nightdemon

Your car is Beautiful. Thanks for the info, what diff did you end up going with?

Thank you, I just swapped in a zl1 rear diff, axles and driveshaft hope to test it out soon

[havelegs]

What about the stock top end? What's safe power of you don't remove the dod?

[Moreair1]

Originally Posted by fif_gen_powa

Thank you, I just swapped in a zl1 rear diff, axles and driveshaft hope to test it out soon

I think you will be more than impressed with that set up, only downside is lack of gear choices, speaking of that did you do 3.23s or 3.73s

Op the 3 keys for a reliable high hp car- enough fuel, good tune and after those 2 key things are met comes good maintenance, without any of these thing it can lead to detrimental malfunctions

[nightdemon]

Originally Posted by fif_gen_powa

Thank you, I just swapped in a zl1 rear diff, axles and driveshaft hope to test it out soon

Let me know what you think about that ZL1 diff after you make a hit, I'm curious how much harder the car pulls with the 3.73. whats the best 60 foot you've cut?

[bayarea408]

Originally Posted by havelegs

What about the stock top end? What's safe power of you don't remove the dod?

I have done some research on the DOD stuff and found it to kinda be hit or miss with failures. Folks say to stay conservative untill you DOD delete. I wouldnt go past 6-8 pounds stock dod afm gear equip, in fear one may fail. We have seen several higher HP cars 700 ish with stock dod, its just a weak point vs a LS3. I still have stock dod and have been at 8 pounds for a few years. Use good oil and dont peer pressure pump gas too much it will be fine.

[WatchThis]

Mine let go at a touch above 700/700 to the wheels. That was on a bone stock L99 from top to bottom with AGP’s base kit and fuel upgrades with meth on about 12 pounds of boost. Car had about 32,000 miles on it and randomly let go on a street hit from 30mph when I got up to about 70ish mph. Put a huge hole in the side of the block when the rod let go and blew chunks of piston everywhere.

[havelegs]

Originally Posted by bayarea408

I have done some research on the DOD stuff and found it to kinda be hit or miss with failures. Folks say to stay conservative untill you DOD delete. I wouldnt go past 6-8 pounds stock dod afm gear equip, in fear one may fail. We have seen several higher HP cars 700 ish with stock dod, its just a weak point vs a LS3. I still have stock dod and have been at 8 pounds for a few years. Use good oil and dont peer pressure pump gas too much it will be fine.

Ok thanks. I really want to sc mine but I know the cost for dod delete is pricey as well. And what oil do you use?

[hammdo]

I had the ADM LSA conversion with GPI ported heads, GPI SS1 cam, AFM/DOD delete, LS7 lifters, gasket set, headers, etc..

591 RWHP 525 RWTQ no issues with this one. 6 PSI boost... breathed very well... Oil - Driven’s LS30

Ported LSA Blower, snout, 2.45 pulley, E85, 681 RWHP 636 RWTQ 10 PSI

all on stock L99 block...

Then went nuts with a GPI forged/stroked LSA, ported LSA blower, pulleys, E85, 13.5 PSI. Oil - Driven’s DT40

-Don

[sixty9fordkiller]

this might be the highest hp stock long block LS3 (besides the cam and valvetrain) 5th Gen in California

cam, boost, and fuel system

1000+ RWHP by Cunningham Motorsports

https://youtu.be/gBP7vi9UJ54

https://youtu.be/b2FWvu_iKwo

dont see any reason why it cant be done with an L99 with the same work

[bayarea408]

Originally Posted by havelegs

Ok thanks. I really want to sc mine but I know the cost for dod delete is pricey as well. And what oil do you use?

Amsoil signature series 5w30. Im planning a cam build that covers dod delete as well. After dod usually the stock trans is next in line for plans. A l99 is just a slightly lower compression ls3 after all the dod delete is said and done.

[Huron Speed]

So far we have some impressive numbers from customers car's running our Twin Kit still on stock bottom ends, here are a couple examples!

858/787 (6765's, M6)
848/754 (6265's, M6, 14 psi, 93pump)
775/803 (my personal car- 5858's, 4l80-e, 15psi, e85)
707/638 (6065's, M6, 10psi, 93 pump)

[nightdemon]

Originally Posted by sixty9fordkiller

this might be the highest hp stock long block LS3 (besides the cam and valvetrain) 5th Gen in California

cam, boost, and fuel system

1000+ RWHP by Cunningham Motorsports

https://youtu.be/gBP7vi9UJ54

https://youtu.be/b2FWvu_iKwo

dont see any reason why it cant be done with an L99 with the same work

Thanks for the info and the Videos 1k WHP is crazy, i wonder if the car is still cruising the streets with the stock bottom end.

[nightdemon]

Originally Posted by Huron Speed

So far we have some impressive numbers from customers car's running our Twin Kit still on stock bottom ends, here are a couple examples!

858/787 (6765's, M6)
848/754 (6265's, M6, 14 psi, 93pump)
775/803 (my personal car- 5858's, 4l80-e, 15psi, e85)
707/638 (6065's, M6, 10psi, 93 pump)

Wow Great numbers you guys are putting down. On your Personal car hows the Trans digging that kinda power? Have you benn to the track with it?