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403ci Ls2 Stroker Nitrous Build

Old 05-05-2016, 01:03 PM
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Wow you guys have a bad *** place there! Is that road asphalt?
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Old 05-05-2016, 01:26 PM
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Originally Posted by blk00ss View Post
Wow you guys have a bad *** place there! Is that road asphalt?
Thanks! The road is a little beat up from all the tractors and big rigs that go down it during the daytime but its a dead end road in the middle of the fields so it works out perfect for testing. Its a concrete road with about 100' of decent rubber in both lanes.
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Old 05-09-2016, 11:09 PM
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Nothing wrong with that. You know traction isnt the problem so now its time to build up everything that can break and let it eat. That thing handled 350 like a champ.
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Old 05-17-2016, 10:11 PM
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Tell me more about the Crank and Rods….Are they the speedway stuff on eBay?
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Old 02-16-2017, 02:19 PM
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UPDATE

Hey guys, been a while since I have updated this thread and wanted to share some of the progress/issues I've had along the way.

So I finally ended up going with a Strange 12 bolt:
Strange Housing
Steel Spool
35 spline lightweight axles
3.90 gears
LPW girdle cover
1/2 wheel studs
MWC Anti Roll Bar




From here, I also switched to Aerospace front drag brakes and made the mistake of not using red loctite on the rotor/hat bolts needless to say they came apart while driving which was scary as hell... Aerospace helped me out with a new kit for a great price and did it right the second time.

Now for the fun...

I have been chasing endless alternator problems ever since I swapped out the underdrive balancer for the stock size. Literally every time I would put a new one in and go WOT it would kill the alternator. I even tried a truck alternator which lasted the longest at 3 months (maybe 5-6 WOT pulls) and then it died on me.

I finally realized I was over-spinning them because my pulley ratios were wayyyy off. When I would order the alternators they would get shipped with an overdrive pulley which was not a good thing for me.

7.5" Crank Pulley
2" Alternator Pulley
7000rpms
Given the math, I was spinning the alternators to 26,000rpms!!!

I finally got myself a NEW tuck alternator and installed a 3" pulley on it which brings down my alternator RPM's to a respectable 17,500 max. I just put this on last weekend and am praying this is the final cure... So for anyone out there with the stock size balancer who spins the motor up high, do yourself a favor and make sure your alternator pulley is at least 3".

I also swapped out the water pump for an OAW (Ebay) unit as mine was starting to make noise. Since I had the water pump off I decided it was a good time to upgrade the radiator as it was the original on the car like the water pump. I went with a Murray brand from Oreilly's which has an 1 1/4 core depth. The only modification I had to make was to plug the extra nipple at the bottom like most Lt1 radiator swaps. I used a large vacuum cap and hose clamp. I burped the system and took it out for a spin with no leaks or cooling issues.

I plan to hit Irwindale raceway next Thursday for their test n tune event and am hoping for low 6's off the trailer on a conservative progressive tune.

Launch photo of our test street in Mexico
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Old 02-24-2017, 01:30 PM
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Got the car out to the local 1/8 mile track to do some NA passes as I didn't have time to get the bottles filled.

I figured the car MIGHT have a 7.6 in it given that the converter is super tight and my cam is of course a nitrous grind. Boy was I wrong...

The car dead hooked with a 1.65 60' and ran 7.0 at 100mph!!!

I'm pretty shocked it ran that fast on motor which equates to about 11.1 in the 1/4.

I'm heading to the 1/4 mile track tomorrow for some nitrous runs and will see how it does. I do not have a cage in the car so I will be doing some 1/8 mile testing before going all out and getting kicked out...Stay tuned!



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Old 02-26-2017, 12:18 AM
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Update

Finally made it to the track to test the nitrous and went 9.8 at 139 right off the trailer on the 250 jets. I really wanted to spray 350 on it but i got kicked out for no cage...



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Old 02-26-2017, 01:24 AM
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Congradulations. Any plans for a cage so you can realy turn it up at the track?
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Old 03-04-2017, 02:25 PM
  #49  
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Awesome build. I've always had my heart set on a nitrous build, even with turbos being the craze. Glad to see you're really dialing it in.
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Old 01-10-2019, 08:07 PM
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I realize its been awhile, but any updates with this car?
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