how much horsepower can u make with a stock bottomend

skew12 · Oct 21, 2012

Not enough. Not even close to enough.

weekendwarriorfsw32 · Oct 21, 2012

Anything over 450 and you are on borrowed time with a stock bottom end.

TARM · Oct 21, 2012

In the case of engine life first it has to be framed as what is the expected duty life as all power levels have a certain life span. Beyond that I think torque is a more accurate measurement as we'll as the RPM it peaks at. Two 500 HP engines one with 1300 ftlb ta at a much lower RPM peak vs a 500 with a 800 ftlb is going to vary greatly in cylinder pressure and torsional forces and stresses. Still this is but a rough guide

Arisley · Oct 21, 2012

weekendwarriorfsw32 said:
Anything over 450 and you are on borrowed time with a stock bottom end.

I've been at or over 500 for 60K.

Magnum PD · Oct 21, 2012

Got a partial fill and girdle but, missing billet rods though.

OSCS · Oct 21, 2012

Magnum PD said:
Got a partial fill and girdle but, missing billet rods though.

I bet that girdle will do the job

mattman347 · Oct 21, 2012

I just drove to Ohio and back with my set up, race it as often as I can and dont drive real "easy". LOL. In my opinion it is all luck of the draw, some take it some don't, one could have the exact same set up on it as another and One could let go and one could survive for a while. I'm not real worried about mine as it is not my main mode of transportation, if yours is your primary vehicle to your job I would think about getting a cheap "beater" or leaving it close to stock.

Magnum PD · Oct 21, 2012

OSCS said:
I bet that girdle will do the job

Another with a girdle blew with 250/200's.

OSCS · Oct 21, 2012

Magnum PD said:
Another with a girdle blew with 250/200's.

I would think with a girdle, the torque curve in the right place and some nice live tunning you'd be ok. Are you talking about maddiesles build?

Diezel Dawg · Oct 21, 2012

weekendwarriorfsw32 said:
Anything over 450 and you are on borrowed time with a stock bottom end.

Where do you come up with this stuff? Good tuning can make a motor live a long time

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bruce · Oct 21, 2012

Diezel Dawg said:
Where do you come up with this stuff? Good tuning can make a motor live a long time

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good tunin and drivin sensibly makes things last for a long time

Diezel Dawg · Oct 21, 2012

bruce said:
good tunin and drivin sensibly makes things last for a long time

Very true

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goodstktbo · Oct 21, 2012

Got a 112.15 mph at 6800lbs Yesterday. Bout 650 calc. says. pushed some coolant out of degass during the run tho :doh:

CurtisF · Oct 21, 2012

I brought up torque curves because I don't think luck has as much to do with it.

When I made my dyno run this summer, another truck hit 1 hp more than me, but more than 100 ft/lbs of torque. Can you guess which one (mine or his) has higher cylinder pressures to make that happen?

Magnum PD · Oct 21, 2012

OSCS said:
I would think with a girdle, the torque curve in the right place and some nice live tunning you'd be ok. Are you talking about maddiesles build?

Cota?

Diezel Dawg · Oct 21, 2012

Cota does have a girdle on his built motor that he hasn't installed yet

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weekendwarriorfsw32 · Oct 22, 2012

Watching over the years of failure after failure. 6.0's and 6.4's don't go through bottom ends because of how the main caps are all tied together thus not allowing the crank to walk if you will, but on a 7.3 the main caps are not tied together creating a weak bottom and allowing stuff to walk creating the issues. I do agree tuning does play a part but in the end its still a weak bottom end that unless "beefed" up will come apart. There are the few who have made 500+ hp and have had thousand's of miles on there motor's but most likely daily driving in a lower power tune and never using the full 500+ potential everyday or working there truck hard.

Diezel Dawg said:
Where do you come up with this stuff? Good tuning can make a motor live a long time

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Arisley · Oct 22, 2012

Yeah you are right, I baby my truck.

fordfreak4life · Oct 22, 2012

Diezel Dawg said:
Where do you come up with this stuff? Good tuning can make a motor live a long time

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Dp tuner, that's where

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CSIPSD · Oct 22, 2012

weekendwarriorfsw32 said:
Watching over the years of failure after failure. 6.0's and 6.4's don't go through bottom ends because of how the main caps are all tied together thus not allowing the crank to walk if you will, but on a 7.3 the main caps are not tied together creating a weak bottom and allowing stuff to walk creating the issues. I do agree tuning does play a part but in the end its still a weak bottom end that unless "beefed" up will come apart. There are the few who have made 500+ hp and have had thousand's of miles on there motor's but most likely daily driving in a lower power tune and never using the full 500+ potential everyday or working there truck hard.

That goes with any truck... I dont think your driving around making 700hp all day every day.

The drive train will not hold up to it, none of the light duty trucks will hold up to much more then 350hp on a daily basis...