uedlose

We ran a 17 psi pulley but only seen 13 psi on the gauge in street trim, it was intercooled and we have a EPEC to tune the motor with and that makes a huge diff.we also did it on a stock bottom end,all but the pistons and the rod bolts.and ran the car to 11.16 at 121 mph(best) in a full weight street car for almost 4 years till it let go.now it looks like this Hey but no tears here it ran great for a long time LOL.

Black Snake

My god, didnt think that could really happen, Poor baby.

vfast

when you hit the 525 plato you risk the block cracking in half ..also went going above 10 psi stock rod bolts can strech and spin a bearing, or lastly with stock retainers on the valve spring could drop a valve if using a 500 lift cam or more

81ponycar

If you have stock internals then i would feel safe over eight.

Tims 88GT

hey vfast .522 lol I may have a problem sometime lol. hey I want a block that looks like that so people can ask me what that was out of and what happened. it would be a nice conversation peace

vfast

I have a few boat achors here

angcobra

If you have some boat anchors that look like the failed block pictures, I think many of us would like to know the details of those failures. It might not be a bad idea for someone to create a sticky of known failures so we can compare to what we have.

vfast

I don't think we need a stickey on it....anyone who knows their stuff knows the 500hp thersehold on the block

shuribob

Sean Hyland says "At present, my recommendation is to limit use of the stock rods in engines of 450hp or less." Sean also talks about not going over 1opsi of boost saying that over that is more a race then street application. Since he's done the research I would guess he would know. Bottom line "The key is to have a calibration for the computer that is conservative enough to not detonate under poor fuel, heavy-load conditions". Enough said.......

1997 Rio Red Cobra Coupe
Kenne Bell Supercharger at 7PSI
Kenne Bell Open House Hi Flow Manifold
Kenne Bell Boost a Pump
Superchips Excalibrater II Tuner
MSD Blaster Coil Packs
C&L TrueFlow Inlet Intake Power Pipe
Super Chips MAF with K&N Filter
UPR O/R x pipe
MagnaFlow Catback Exhaust
Bilstein Shocks and Struts
Kenny Brown Sport Springs
Kenny Brown Extreme Matrix System
Kenny Brown Rear Shock Tower Brace
Kenny Brown Lower Chassis Brace
Kenny Brown Caster Plus Kit
Steeda Lower Control Arms
Lakewood Upper Control Arms
Ford Racing Aluminum Drive Shaft with Safety Loop
T/A Rear End Girdle
B&M Pro Ripper Shifter
Autometer Guages
Raptor Shift Light
Hood Struts
Rear quarter Sail Panels
Side Scoops
Custom Striping
275/17 X 9” Front 315/17 X 10.5” BFG drag radials Rear on Cobra R Rims

angcobra

yet the owner of Walker Dyno Tune has an 86 GT with Turbo making well over 600 HP for years on the stock block. At one time he was making ~ 800 RWHP on the same block when he had a larger Turbo on it. Makes you wonder how some of these can handle so much and some break. I guess it has to do with randomness of metal strength when you do castings. I am making > 600 hp with my 347, I sure hope it don't split in the middle.