I recently blew a piston or at least i think i did...
I am going to rebuild my lnf

What is the things i must upgrade internally?! My hp goals are around 350 400 max

 

you'd be fine at 400 on a stock motor

 

Anything u recommend i upgrade since im already taking the engine apart

 

figure out why the motor went at such low power

 

Yea it shouldnt have gone out... Im on stock tune

 

lol that's weird, how many miles?

ARP headstuds
gm rod and main bearings
you could def do oem pistons/rods if your only looking for under 400, or do wiseco pistons/zzp rods
CED deluxe timing chain kit
main girdle bolts

pull the motor and get the bores honed to the pistons tho

 

Solve that question before you do anything else. No sense pouring a pile of cash on big power parts only to watch them melt down too.

 

lets see some pics

 

I have no idea what the problem could be its 40k stock motor just bolt ons... Maybe reved too high

 

I havent began to take it apart for the same reason i want to have an idea of whay im looking at before i pull out the motor

 

Honestly if you're not to mechanically inclined I would have a Mechanic look at it or see if someone you know has experience with engines. Good luck at finding out the issue.

 

I did all kinds of tests... I only found no compression on cylinder 4.. That kind of answers my question but i need a second opinion

 

at very least youll need:

new rod+piston
full ring set
gm rod bearings
gm main bearings
hone the bores of block
arp headstuds or gm headbolts
main girdle bolts
head gasket

total would prob be <$1000 with machine work, this assumes that it really is a piston and you didn't crack a sleeve. but I would call that a pretty fair assumption

 

was that the salvage title car? why does it have salvage title? what happened to it

 

I understand that, that's why I said something about a Mechanic or a friend with some knowledge. Unless you get an answer here.

 

It had no front bumper and fender bad axle and a slight scratch on passennger side rim had 5k miles no frame damage thats how i bought it

 

Also if you only want 400 hp then just get a drop out set of rods and pistons from zzp. They have ldk stock drop outs for 200 I think

 

GM ACDelco - Take Out LDK/LNF Piston(s) and Rod(s) #