My local shop is asking alot to do the work and I want to know what a going rate for machine work on a LM7 iron block would cost with assembly to a 383!!

 

Let me know too... I have a block that needs honed for some forged pistons and I dont know where to take it! I live in Reston, VA so I'm not too far off.

I also have a stock crank that need balanced...

 

I just talked to a guy in Houston Texas named Bryan. He's from LME, now check this out...I went to CNC here in manassas, they quoted me $3,000 bucks to machine and assemble, outa there F*&#@ng mind. So bryan said they will do the machining and assembly for $850.00 Talk about a deal!! When he calls me back I can talk to him for you and get you his info if you'd like!?

 

Sure, post it up... but seeing that you're from VA, I would think you might want something a little closer? Not sure how dead-on you are about using a sponsor, but a friend of mine races circle track cars and he uses a place in West Virginia for all his engine work... might be a little closer.

 

Yeah thats much closer, but I've already given the word on sending it plus I dont know how good the other guy is but a sponser from LS1tech, I'd trust will do it correctly since they have a repitation to keep!! Just my .02 cents though

 

LME does great work.
If your doing a iron block and 383 cubic inches tell me about your built?
You using a offset stock crank?
A 4" crank get you 402 cubic inches and with some machine work 408/410/414 cube's.
I am sure you know this so what setup are you doing?

 

383 iron block out of a 5.3l
3.903 bore
4" Lunati Forged crank
6.125 Rods
Lunati Forged Pistons -30cc (getting high temp coat)
LS1 Ported Oil Pump
ARP (rod bolts, main studs, head bolts, crank pulley bolt)
TEA stage 1.5 ported polished heads 2.02 1.60
Stock "New" Rocker arms
Cammotion 222/219 .550 .547
N2O DP on truck manifold from NitroDaves

 

does anyone know how much it would be to just bored out an lm7 to 3.910 bore. im looking to puts some forged ls1 pistons in my lm7.

 

Yes I run a machine shop inside HPE here and have done a few of the 383 irons as well. We do all our own machining and balancing right here.

 

Why such a dish? -30cc's will put you in the low 9's, compression wise, depending on a few specs. That's a bit low for a No2 motor. I'd shoot for 11:1, but that's just me.

 

It's not a nitrous motor!! Read my sig... And it will be at 8.3:1 it comes stock a little over 9 now

 

Here waiting for install: 2 stage 225 DP wet shot


So your gunna use a 225 DP and a Turbo? Not a very good idea. If it's strictly turbo, then it should work great!

 

Yeah I see your point...but it still doesn't make sense to build a motor specifically for N2O and only shoot 225.



Why would you say that?? I've been going over this project with people on this site and a couple others for 2 years now!! Not to mention all the sponsors, and "guru's" who all agree it will work more than fine with the combination of internals I've used!! The only problem with the n2o being in the equation, is if it would have been a dry shot!! Since it's wet, and using 103 octane fuel in its own stand alone, there shouldn't be any problems!! Hell any combo of power adders should work as long as the AFR is placed correctly, IAT stay ambiant, spark stay's hot/cold enough, dwell time is set correctly, and proper fuel is used in combustion!!!

 

I didn't say it wouldn't work, but, dual power adders always tend to have more problems. Once your motor is tuned for the turbo, then you have the No2, which isn't on all the time, that will effect the tune as well. Hopefully you've researched and found a good tuner and all will be ok.