So I'm getting impatient with my LS3 Stoker build as parts are taking forever. So in the meantime, I'm thinking of putting a NOS 05151 kit on my TPI L98 that has milled L98 heads (milled 0.010" for 10.05:1 compression), Speed Pro Forged pistons with 0.020" Ring gap (was planning on maybe putting a D1SC on this so I gapped the rings bigger). Its a 355ci and has SLP 1 3/4" headers and a Comp Cams 210/220 @ 0.050", .500/.510, 114 LSA cam. I have an EBL Flash P4 with the car tuned nearly perfectly (as good as I can without a dyno and just doing 30-80mpg Dragy runs) and have my timing and fuel maps pretty dead on. No knocks at WOT except sometimes I get 1 degree of KR at around 3200-3800 RPM that decays fast. I have a ProBuilt Stage 3 700R4 with a non lockup Continental converter with a 2400 stall I believe.

You think this motor will handle 150 shot ok? Should I run more? I'd like to sell this engine if its good shape by the time the LS3 is done but if I grenade it I won't be super sad. Or should I spend $200 and buy a set of AFR 195cc Street heads?

Car runs 14.0 on the street with a 2.4 60 ft and 13.6 at the track with a 1.9 60 ft.

 

I ran that NOS 05151 kit on my 305 TPi for 6 years. I used mostly the 100 shot, but occasionally would put in the 150 jets. Probably went through 20-25 full nitrous bottles during that 6 year timeframe, mostly just having fun on the street. The engine was bone stock, so cast everything. Lived plenty fine until I needed more power and pulled the engine out in the winter of 2019 to put in this 406 sbc. I now use some parts of that nos 05151 kit on my current nitrous system in this car. The solenoids are still in use to this day. Just yesterday I put the 175 hp jets in the car and ran at the track. I will type that update in my own build thread; hint.. it was fun and fast!

I am no engine guru by any means, but a 150 shot should be fine for your setup. Retard the timing appropriately. use proper fuel octane, and a colder plug. Start withthe 100 shot, then maybe 125 then see if 150 is good.