So its pretty simple I have a 88,000 mile stock block that has been well cared for, with all maintenance done on time or early , but obviously it has been run hard from time to time.

Anyway I want to put a super fast spooling build in it with about 375 to 400 tq. at first will be e85 on a stock turbo, which is what I'm worried about, then e85 on a green. Not sure if e85 plus supporting mods on the stock turbo will do 400tq but we'll see.

Should I wait to add the power and fortify the block first or will the stock block be able to handle that much torque relatively safely at that mileage? If not how much power would the stock block be able to handle safely?
Thanks -- Alec

 

Dude , never gamble whit that mutch power on a stock block , 400tq i realy to push it.
You will have a good chanse to pop a rod , I would not take that chans , to later have to find a new block , and new crank , ( expensive )

I recomend a bulit motor

H beem manhley rood , and pistons and rings ,
Supertech valve spirings , and titanitum retainers ,
Get a PF black , and make som fule upgrades , and som enginge mapping , then you are safe

djust make shure you have a big wallet

 

Don't want an (FP) black. but thanks for the input

 

Anyway don't run big tq on stock rods , they will pop out some day ,
the question is not Why .. its when

 

If you take care of the block, do reg oil changes and maintence etc it should be fine. When to rebuild when it actually dies and or when your compression goes down the toilet.

 

I made 420tq on stock ix turbo with e85. (dynojet)

 

From what I have gathered I would do some ARP studs for 400tq

 

That should have been one of the first mods you did or do to the car. It is never a bad idea to keep that had on there flat

 

I made 382hp 379tq on my stock block on 93 pump gas on a NON HTA Green.

I've been told by my tuner with some 1450cc injectors and some E85, I could be anywhere from 430-450hp.

The guy I got my FP Green from was around the 430hp 400ish tq mark on E85 with a stock block, but then he upgraded to an FP red, and built the motor,

 

It has been said alot in the last few days. You can make more tq then 400 but how reliable is it gonna be in the long run. Sure I make 455 ft lbs of tq and that will change, but I also have a tuner takeing all the precautions necessary to make sure the motor don't go boom.

 

+1

I agree, better safe the sorry as the say,
Fore those who run more then 400tq in stock rods, recomend to put the peek torque on higher revs at mutch as posible anyway when tuning , , so you dont load the enginge on low revs ,
that and ARP bolts , and not abuseing the car 24/7 , will make it last a abit... Maby , but not fore ever ,

I hove there is someone who has got a pile of shortblocks fore sell ,

 

I have mine tuned to 375whp and 400tq on stock block, stock turbo, and 93 octane for the past 3000 miles daily driven, so far, so good.

 

I've seen many cars out here in the bay area running 400+ tq on a Mustang Dyno. Some are still running...some are now built as a result of the block getting a new set of windows.

Someone stated before that the "danger zone" for a stock block is around 390-420 wtq...and so far this has proven to be true (in my experience). It really is a when not if situation. Sure you may be able to run that kind of power for awhile...but just like anything else mechanical, it does eventually give up the ghost.

 

Yeah its like the car gets fun and then it breaks sucks don't it.

 

as i said its not the question of IF it breaks , its when it Breaks ?
maby you can runt it fore several yeas , and one day you decide to make som redlight racing , and you enginge goes boom djust beacuse a missfire maby ore who knows ,
You and your friend steps out of the car , and you are thinking dame this cant be good ,
you open your hood to have a look , and your freed says , hey look nice rods man , sorry one decied to try to make a run fore it