thirdgenbum

iTrader: (17)

has anyone pursued this at all? i have my hands in another build that might be a good candidate for something like this.

speedtigger

iTrader: (16)

Interesting. I have seen some stupid fast turbo 4.8s, but nothing comes to mind for n/a 4.8s.

Doug G

Sounds like the makings of a screamer
Old 302ci style w/ 8000+rpm shifts

ZONES89RS

iTrader: (25)

I've been offered to buy back my old 5.3 that I traded for a car, turns out it was a 4.8, I only went by the circle on the front from the factory, crank numbers say otherwise. Thought about making one spin 8k and see how fast I can make it in a mustang or something really light.

speedtigger

iTrader: (16)

The idea of a 4.8 crank in a 6.2 is intriguing. That would be the 8k screamer of my choice. It would also be fun to hit the 4.8 with a 200 shot.

ZONES89RS

iTrader: (25)

I'm torn, I want another project to just be off road, and a 5.3 swapped jeep with a 2215 eddy cam and a 3000 converter sounds like it would be a blast. But a gutted, full tin can mustang with a 8k rpm 4.8 with a th350, t brake and a 6000 converter would be interesting.

speedtigger

iTrader: (16)

That is just what you need is another project.

kelsey_canard

iTrader: (6)

This sounds like a thread that would depress me on how slow my stuff is.

ZONES89RS

iTrader: (25)

That's why I want to sell the s10, so I can get a 4th gen. Lol

dezlfrek

iTrader: (1)

I know my lil 302 cid 4.8 runs good with a hair dryer attached..

dogsballs

isn't essentially dave mizell did with his 346?! 5.3 magnum xl crank with 4.00 bore?

VLS1

LS2 block re sleeved with 4.155 bore and 3.185 stroke.

thirdgenbum

iTrader: (17)

will keep you guys posted as this unfolds. not sure if we are going to pursue anything with this or not, but i have my hands heavily in another 3200lbs thirdgen project that is destined to get a carbed ls eventually.

ZONES89RS

iTrader: (25)

Not sure, over seen some boosted 4.8s turn 7700 with regular components, so not sure what's another 300 rpm.

thirdgenbum

iTrader: (17)

got an engine today. my cousin will pull a head when he gets some time to see if it's a 4.8 or a 5.3

ZONES89RS

iTrader: (25)

Well, as if today, my 200k mile 4.8 is making noise. Oil was low and not reading on the stick. So, perhaps a quest for a hard running 4.8 may very well be in the making just because it would be fun.

I am going to need input from everyone here if I do this.

Do I go stock heads untouched? Or posted LS1 heads I have laying around?

I'm thinking the Trex would be fun in a 4.8 with a much larger converter and double springs.

Matt, sounds like we may have a chance to shake things up for fun sake.

thirdgenbum

iTrader: (17)

well we ended up with a 5.3. i'm not disappointed but was looking forward to the small cube for a challenge. no sweat though, lol

ZONES89RS

iTrader: (25)

Well hell, would be cool to have two 4.8 cars coming together to see how hard we can push them.

ZONES89RS

iTrader: (25)

We have a member that turned his stock long block with cam and carb to 7800, that was a 6.0, now do the math on the smaller 4.8 piston and the shorter stroke that reduces piston speed and you have a engine that makes less power but turns the revs easier. It is important to have all the components set up to avoid incorrect wear for long term use of course.

And I just ran into a problem with wanting to make a 4.8 run that high. The 4L80 can roll the sprag shifting above 7000. So much for that idea.

thirdgenbum

iTrader: (17)

someone send me some 5.7 pistons and a 4.8 crank and i'll ee what i can do, lol.