400hp can and has been attained on a stock m62, it has been done. is it practical? no. is it reliable? no. is it cost effective? no. so why do it? the only reason i see is bragging rights. however for a shop like zzp to do it, it makes complete sense, its done for research and marketing.

doing a odd build (like limiting yourself with a stock blower) for bragging rights might seem cool, but its highly impractical. its all cool during the build, people follow it and you get respect for what your doing, and its great getting it running and figured out, all tuned, etc. it doesnt even matter how much it cost you, until someone who spent 1/4 the money and far less hassle on a proven setup drives around you like your standing still. it sucks, big time. ive been there, learned from it, moved on.

im not trying to be an ass. this community is 13 years old now, its well known what can and cant be done, and whats practical. its best tome come up with an end goal and figure out the most practical way to get there. if you want more than 300hp reliably, your best option is an eaton tvs. if you want more than 350, best to go turbo.

 

^ good, and cost effective advice

 

oh boy.....

 

I have been emailing Kyle at ZZP about an M62 set up for a daily commuter that I was looking to get around 250whp. He's convinced me that it would cost way too much to get a blower to make what a Turbo can easily produce for a lot less. If you want to blow your engine with stock internals, just put Turbo it. Your block likely won't last long at 400.

 

i thought the stock internals were supposed to be good up to a little over 400 hp. and the block itself its good to over 500.

 

400 if you don't drive it like you stole it all the time. If you try and do it on the m62 it probably won't live due to heat.

 

would an aftermarket ZZP block hold up better? i was thinking about buying a girdled block.

 

You don't need a girdled block. If you have the money for that then throw away the m62 and go turbo or tvs setup.

 

This guy seems like a hopeless cause.

So many members waste so much time trying to explain why new members ideas are dumb. Most of the time they stop posting after two weeks.

Let him waste his money. Especially if it's to a supporting vendor.

 

a stock lsj long block will hold up to around 400hp with a turbo. from what ive seen a tvs will do 350 ish and an m62 about 300hp. those are figures with a reliable tune. the difference in it all is efficiency and airflow. the reason a turbo will allow more horsepower than a blower is you gotta remember, the blower takes horsepower to turn. also need to factor in how much air each compressor can flow, when you move the compressor way out of the efficiency range all it does is build heat causing detonation and causing more stress.

everything from here on is talking about with a turbo, cause over 400hp with a blower (be it m62 or tvs) is pretty rare and unknown. the stock lsj block (gen 1 block) is good for around 425 hp. some have made more, some break them at a lower power level. a gen 3 block is said to be good for around 500hp. the zzp girdled block is meant to take over from there, its been proven to 898 hp without failure. keep in mind this is a modified factory block, its not a full aftermarket piece, there isnt one of those in existence.

i suggest you look up the gm ecotec build book online. its a little dated now but it does give some good insight as to what an ecotec can and cant do.

 

If you want to know how to build a reliable 300whp car, invest in the LSJ build book.

You do not need a small pulley to make tons of power.

 

That is an LSJ... But it's also a 2.4 Stroked engine. He made that power by basically replacing all the internals of the engine. That is a route you can go. I believe he was making that power with about 13 lbs of boost though. It wasn't by over spinning the blower.