660 Ft. Lbs. Torque

[Doctor Fishtail]

Would this be considered a bit much for a stock engine?

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[zaquhree]

Nope

 

[Z_Rocks]

Would this be considered a bit much for a stock engine?

At what RPM?

 

[jhatley7]

Nope. If you have the MT-82 and drive hard, yes bad for that. But there are other factors at play. 100% stock car? No problem bc you won't be able to hook up. Thus nothing breaks. If you stay at stock rev limiter you don't have to worry about opg and crank sprocket.

 

[Doctor Fishtail]

Nope

At what RPM?

Nope. If you have the MT-82 and drive hard, yes bad for that. But there are other factors at play. 100% stock car? No problem bc you won't be able to hook up. Thus nothing breaks. If you stay at stock rev limiter you don't have to worry about opg and crank sprocket.

Am hearing that the rods are our weak link. A stabbing of throttle at 2500 rpm? Am running Bridgestone RE-11s hooks decent for a street tire. Saving for built short block and a T-56.

 

[jhatley7]

Am hearing that the rods are our weak link. A stabbing of throttle at 2500 rpm? Am running Bridgestone RE-11s hooks decent for a street tire. Saving for built short block and a T-56.

My pump gas tune has 700hp and 570ft pounds at 13psi. My race e85 will be at 15-16psi. Should be north of 900hp 750 foot. Hope to start than tuning today. I would look into a tr6060. Just finished that swap.

Also what blower setup are you running?

 

[Z_Rocks]

Am hearing that the rods are our weak link.

That was the reason I asked. I've seen [not in Mustang] Rod's neck break in low RPM with high TQ or can crack the crank when the crank hasn't got into full swing.

 

[Doctor Fishtail]

My pump gas tune has 700hp and 570ft pounds at 13psi. My race e85 will be at 15-16psi. Should be north of 900hp 750 foot. Hope to start than tuning today. I would look into a tr6060. Just finished that swap.

Also what blower setup are you running?

Roush 72mm pulley. On E85. What pulley are you running to get 750 Ft. Lbs.? Stock engine internals?

That was the reason I asked. I've seen [not in Mustang] Rod's neck break in low RPM with high TQ or can crack the crank when the crank hasn't got into full swing.

Even with the stock Roush pulley I would wait until 3000 rpm until wot. I grit my teeth watching dyno operators stabbing throttle well below that.

 

[Doctor Fishtail]

Gen 2 Coyote improvements: Sinter forged connecting rods that were used on the Boss 302 engine that are more durable for high-rpm operation

 

[jhatley7]

Roush 72mm pulley. On E85. What pulley are you running to get 750 Ft. Lbs.? Stock engine internals?


Even with the stock Roush pulley I would wait until 3000 rpm until wot. I grit my teeth watching dyno operators stabbing throttle well below that.

I'm running a Whipple stage 2 with the cobra jet intake. 3.225 upper pulley on 10-rib setup on VP C85. Those are projected numbers not actual yet. As I start the tuning today. That's just we're my tuner said I should be.

 

[moto111]

no need to swap transmissions lol just put a rst clutch in with a steel line

 

[ProChargerTECH]

Would this be considered a bit much for a stock engine?

I have tuned stock motors that make over 800 ft lbs with no issues.
So I would say "it all depends on your tuner"

Cause its not always the power that breaks parts.
Fuel quality, Heat, timing, etc.

 

[Inigo]

Nope. If you have the MT-82 and drive hard, yes bad for that. But there are other factors at play. 100% stock car? No problem bc you won't be able to hook up. Thus nothing breaks. If you stay at stock rev limiter you don't have to worry about opg and crank sprocket.

Your statement about OPG and Crank Sprocket is a bit fallacious.

 

[Doctor Fishtail]

Nope. If you have the MT-82 and drive hard, yes bad for that. But there are other factors at play. 100% stock car? No problem bc you won't be able to hook up. Thus nothing breaks. If you stay at stock rev limiter you don't have to worry about opg and crank sprocket.

Have 325/30/19s RE-11s give me a bit of a decent hookup.

I have tuned stock motors that make over 800 ft lbs with no issues.
So I would say "it all depends on your tuner"

Cause its not always the power that breaks parts.
Fuel quality, Heat, timing, etc.

800Ft. Lbs.??? That is extreme. Track car?

Your statement about OPG and Crank Sprocket is a bit fallacious.

I agree. Rev limiter is not the only cause of breakage. Crank Jerk. For this I have an ATI Super Damper installed. https://www.lmengines.com/mod-motor-oil-pump-failures/

 

[jhatley7]

Doc, did you do the ATI without the gears? If so may I ask why? Im also saving for as forged and sleeved block. I've been advised by my tuner that anything above 15 psi is really pushing the motor and don't expect it to last forever. So we shall see.

Inigo, no sir not really. its pretty hard to bust the opg with a all stock car with just boost. Assuming driver is not being stupid. Absolutely anything is possible. Like I said it takes traction to break things.

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