5.3 powa what should I do

[97firehawk]

So picked up a great running 5.3 that im planning on installing in my 69 chevelle, anyways I received a phone call today from my cousin saying he can get me a 4 inch lunati pro series crank for dirt cheap from what I've read this with boring the shit out of it would make it a 383 , I know pistons are few for the 5.3 unless you get custom ones made but here's the deal I don't need big cubes nor do I want to spend a ton of cash originally I just planned on a rod and piston upgrade and boost the shit out of it .
So here's my question should I mess with stroking this 5.3 or just upgrade the rods and pistons and save this crank for a 6.0 build later down the road.

Sent from my SPH-L720 using Tapatalk

[MeanTA]

Save the crank. The 5.3 is more then able to make great power under boost. Without the extra inches.

[SexyTransAm]

No need to mess with it. Stock bottoms hold great!

Sent from my SAMSUNG-SGH-I547 using Tapatalk

[94Blackbird]

No need to mess with it. Stock bottoms hold great!

Sent from my SAMSUNG-SGH-I547 using Tapatalk

This. One of the magazines did an expo not too long ago where they boosted a stock bottom end 4.8, made 1200 hp and the ignition system gave before the stock bottom end did. And they were trying to break the bottom end.

[97firehawk]

Yeah I've read the article's im a believer these things are awesome the only reason I planned on upgrading the rods and pistons is my heavy right foot . I'm still getting that crank even if i use it for a lamp haha for the price. The more I think about stroking the 5.3 I don't want to do it.

Sent from my SPH-L720 using Tapatalk

[97firehawk]

Well damn now you guys have me thinking about the original plan of just slapping a cam in it and clean up the heads and run it till she blows .

Sent from my SPH-L720 using Tapatalk

[dawdaw]

yup, I would cam it, put the cheapy ebay studs in it, ls9 headgaskets, and let her eat. Conservative timing, e85 and don't run a ton of rpm and it will last a while.

[97firehawk]

That's what I was thinking there's tons of rite ups on these things make pretty damn good power

Sent from my SPH-L720 using Tapatalk

[dawdaw]

That's what I was thinking there's tons of rite ups on these things make pretty damn good power

Sent from my SPH-L720 using Tapatalk

are you planning on having your firehawk back together by spring? hoping me and Jim are going to Stanton around april/may

[Fastbird]

Don't bother dumping money into the 5.3. Throw it in, and do what you want to it until I gives up. Replace. Repeat.

I know a guy, who works for a MAJOR player in the GM performance world. He's got an (I think) 88 S10 with twin turbo's fabbed by himself, and he consistently runs stock 5.3 motors in it. Low 9's high 8's all day long. Blows one up, tosses a new one in, does it again. They're so cheap that it's almost fun to wring the shit out of one until it blows just to do it all over again.

[MeanTA]

I agree with Fastbird. These engines are cheap and easy to find. So just beat on it till it blows.

I read a article online. Where they tested the engines strength. forgot which magazine did it. But they took a stock 4.8 and added a cheap turbo setup using a ebay turbo. And made like 26 1,000+ horsepower pulls. And the engine was running fine when they finally gave up and stopped.

[Fastbird]

Hot Rod. Took a (presumed) 5.3, added a 224 cam, ported heads, kept the stock bearings, crank, pistons, rods, and opened up the ring gaps some. Found out it was a 4.8 on teardown, said to hell with it, ran it anyway. 26 PSI, 1200 flywheel horsepower, and 40+ dyno pulls later, it was still running strong.

I'll see if I can't find and scan in the article. It's pretty amazing, and what the guy I know is doing just backs it up.

[94Blackbird]

I agree with Fastbird. These engines are cheap and easy to find. So just beat on it till it blows.

I read a article online. Where they tested the engines strength. forgot which magazine did it. But they took a stock 4.8 and added a cheap turbo setup using a ebay turbo. And made like 26 1,000+ horsepower pulls. And the engine was running fine when they finally gave up and stopped.

Ok, I was wrong. They gave up because they ran out of dyno time.

EDIT: Link to the article

http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/

[Fastbird]

Kind of makes you want to shove a 5.3 into something small and put stoopid boost through it. Miata or FC RX7 anyone?

[97firehawk]

Scrue it I'm sold I'm camming it and boosting that damn thing. Leter eat.

Sent from my SPH-L720 using Tapatalk

[94Blackbird]

Kind of makes you want to shove a 5.3 into something small and put stoopid boost through it. Miata or FC RX7 anyone?


http://www.youtube.com/watch?v=eR2joY05kQk

[97firehawk]

are you planning on having your firehawk back together by spring? hoping me and Jim are going to Stanton around april/may

It's still together now , hell I only ran it once this year my cousin was trash talking me saying his turbo impala could kick the Hawks ass so I finally put him in place hahaha. But anyways I haven't ordered anything for it I wanted to have called LE by now for the new top end , I'm waiting to find a house or a property with a barn to buy first which I've got a few I'm looking at so after that I'm hoping to get the ball rolling buy spring it would be cool to meet up and make some passes with you guys.

Sent from my SPH-L720 using Tapatalk

[97firehawk]

Hot Rod. Took a (presumed) 5.3, added a 224 cam, ported heads, kept the stock bearings, crank, pistons, rods, and opened up the ring gaps some. Found out it was a 4.8 on teardown, said to hell with it, ran it anyway. 26 PSI, 1200 flywheel horsepower, and 40+ dyno pulls later, it was still running strong.

I'll see if I can't find and scan in the article. It's pretty amazing, and what the guy I know is doing just backs it up.

I've read that article I think there might be a video floating around

Sent from my SPH-L720 using Tapatalk

[popo8]

Got a friend of mine in a notch..has a 5.3...or even the smaller one in his notch mustang. Just broke into the 10s .... he is friends with JACE with the 8sec TURBO 6.0 notch... many of u may have seen it on utube.

MEMBER @ LTXtech.com

[97firehawk]

Watch "11-10-12 stock 4.8 shortblock goes 8.85@153!" on YouTube

https://www.youtube.com/watch?v=tZJQzVsihvQ&feature=youtube_gdata_player

Sent from my SPH-L720 using Tapatalk

[shadowbandit]

I have seen a lot of people bore it out to a 347 and then boost it and make a shit ton of power cause its got a quick stroke and the cubs of an ls1

[dawdaw]

It's still together now , hell I only ran it once this year my cousin was trash talking me saying his turbo impala could kick the Hawks ass so I finally put him in place hahaha. But anyways I haven't ordered anything for it I wanted to have called LE by now for the new top end , I'm waiting to find a house or a property with a barn to buy first which I've got a few I'm looking at so after that I'm hoping to get the ball rolling buy spring it would be cool to meet up and make some passes with you guys.

Sent from my SPH-L720 using Tapatalk
Heck ya! that thing should really pick up with the 21 tfs's and a cam to match. Are you spraying your car at all? I want to go to Onondaga this spring, heard the track was pretty good but the bleachers being non existent and other things sucked lol

[97firehawk]

Heck ya! that thing should really pick up with the 21 tfs's and a cam to match. Are you spraying your car at all? I want to go to Onondaga this spring, heard the track was pretty good but the bleachers being non existent and other things sucked lol

I plan on spraying it ,it was built for it . O yeah I'll be out there they plan on having most of If not all of the things people didn't like this year fixed for next year there's lots of good people out there it should be a fun year.

Sent from my SPH-L720 using Tapatalk

[dawdaw]

I plan on spraying it ,it was built for it . O yeah I'll be out there they plan on having most of If not all of the things people didn't like this year fixed for next year there's lots of good people out there it should be a fun year.

Sent from my SPH-L720 using Tapatalk
oh ya! we got some ls1's around here that need a good assss whooping :devil:. when you planning on building the 5.3 turbo set up?

[97firehawk]

I like whooping on some ls1s hahaha. It'll be over the winter and this summer this car is no rush .

Sent from my SPH-L720 using Tapatalk

[97firehawk]

....

[twgoodspeed]

A local guy with a notch, and 5.3 with boost and who knows what else creped into the 8s not to long ago

[97firehawk]

That right there is 2 lunati pro series 4 inch stroke ls cranks and one of them is mine and my cousin gave it to me for freeeeeeeeeee woohoooo hahaha he said it's my early Christmas gift he gets a killer discount his old employer is the company that does all of the machine work for lunati I guess

Sent from my SPH-L720 using Tapatalk

[97firehawk]

Pic

Sent from my SPH-L720 using Tapatalk