Has anyone got any advice on how to build a 383 stroker motor out of the LM7 motor?

 

Call scoggin dickey performance parts they sale stroked 5.3's they'll know and have everything you need

 

Thanks a lot! Have you worked with them before?
I hope they're one of the better company's. I've heard some horror stories. A little irrelevant, but I was watching YouTube videos last night on some guy that claims he does AMAZING head work. Turns out he's a liar and a thief. One guy had nearly $4,000 in a set of heads and when he got them back, they hadn't even been touched... so sad to hear that kind of crap happening.

 

Scoggin Dickey is top notch operation

 

Sounds like something out of a BBS from 1996. Who on earth would have anyone touch their heads let alone port them that wasn't a. reputable on the internet or b. was a reputable local porter with a flowbench who had done numerous ls heads. Price wise and certainly consistency wise, It's pretty much impossible to touch a CNC program that has had hundreds of hours invested into the port design and tooling.

 

His YouTube name is Headbytes, that's the guy I was speaking of. He actually sounds like he knows what he's doing, so I'm not sure what his deal was/is. He's just a crook I guess. Any idea what a 383 makes power wise with built 4L60E, 2600 stall and 3.73 in the rear. I've got an 05 silverado extended cab I'm doing my build with.

 

Too many variables.

Cam size, exhaust setup, intake, ambient temps, alltitude, how good the tune is etc etc are all factors.

 

On a well sorted out combo, you can figure 1.1-1.15 hp/ci at the wheels. My 5.3 which is 325ci made 330 at the wheels, but it was stock compression and stock heads.

 

What all do you have done to your truck to get 330 rwhp?

 

218/224@.050 on a 110 LSA cam, springs, pushrods, TBSS intake, 90mm throttle body with the X-link, 1 3/4"x 3" longtubes, 3" y-pipe, 3" exhaust back to a single in dual out muffler, cold air kit and tuning. Truck also has 3000 Vigilante converter, corvette servo and 4.30's now.