441 ls3
09-08-2018, 08:29 AM
#3
Below is a copy and paste from HPR
The HPR 442 is one of our own designs and features some exclusive components only found here. Erik designed this package to extract the most displacement from a stock LS3 engine block without having to go through the expensive of sleeving the block. The 442 features a 4.070" bore and a huge 4.250" stroke forged crankshaft.
https://horsepower-research.com/coll...uminum-442-ls3
The HPR 442 is one of our own designs and features some exclusive components only found here. Erik designed this package to extract the most displacement from a stock LS3 engine block without having to go through the expensive of sleeving the block. The 442 features a 4.070" bore and a huge 4.250" stroke forged crankshaft.
https://horsepower-research.com/coll...uminum-442-ls3
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jobberone (09-08-2018)
02-26-2019, 09:24 PM
#4
how much power can this block hold on nitrous and boost? I have full bolt on ls3 h/c/I trying to be close to 650 hp n/a, is this possible or do I need the ls7 block to get there?
02-27-2019, 10:00 AM
#5
Pro
I've seen a stock LS3 bottom end handle 1100 HP dyno runs, but in my opinion, that isn't a good idea.
But for 650-700 HP, the stock LS3 bottom end is plenty strong. The weakest link in a NA "bolt-on power" LS motor are the hypereutectic pistons. They won't tolerate much detonation so make sure your combination is dialled in.