JPC 2011 5.0L CNC cylinders heads tested

[Justin@JPC]

Jpc would like to announce that we have test results on our CNC cylinder heads for the 2011 5.0L. We have just completed the install/testing on the heads for MM&FF and have a sneak peek of the results. We are not at liberty to post up complete dyno sheets at this time but we can let you in on some of the gains we experienced. The car we used for testing was Joe Marini's 2011 6spd manual GT. The car was equipped with a set of Kooks longtubes, 3" Off-road X-pipe, Bassani mufflers, JLT CAI, and a custom Diablosport/JPC tune. The car baselined at 424rwhp, we installed the cyl heads within 24hrs and did not change anything but the cyl heads, we made sure all of our temperatures were consistent and this is what we found:

A 36rwhp gain at 7,400rpm, 21rwhp gain at peak hp which was 6400rpm, 18rwhp gain at 5,000rpm, 5rwhp gain at 4,000rpm. The heads feature RGR designed cnc porting and a 5angle valve job. They are equipped with stock valves and we shim the valve springs, for added valvetrain stability at high rpms. We will offer a cnc program that also includes camshaft area modifications/clearancing for larger camshaft profiles. This is a must for any camshafts over .500lift. We are currently accepting cores for porting and have an apprx 7 business day turn around time. Please contact us if you have any questions. Thanks JB@JPC

 

[GeorgeInNePa]

What happened with the torque?

 

[jsnyng]

It seems these 5.0's are inching closer and closer to 500HP NA. Pricing?

 

[DDTCM]

Nice!!!!

 

[Justin@JPC]

"What happened with the torque?"

It made more, just kidding George. I will have to pull up the sheets when we get in sometime tomorrow after the snow. The ported heads didn't make any sizeable #'s down low or in the mid range, so if anyone is looking for neck snapping parking lot manuevers don't expect them with the ported heads.

The price of the cyl heads exchanged is $1495 plus freight, fully assembled ready to go.

 

[kevmac]

You've been MOVED!! LOL

 

[RedFire07GT]

Congrats guys!

 

[tjm73]

When will this be published?

What was the average hp and torque from 2000 to 7000 baseline v. the average from 2000-7000 after?

Peak numbers are nice, but we don't drive around at peak anything...ever. Average across the rpm range is much more important to me.

 

[Justin@JPC]

The MM&FF article should be on the newsstands in apprx 2 months.

I agree about the peak numbers that why we posted number from 4,000rpm and above. I can't divulge too much unfortunately. The one thing I'll say about the Coyote engine, and you'll probably hear it numerous times, is that as you add airflow through either cams, cyl heads or an intake manifold, you have to rev them to really benefit from the airflow gains.

From our cam testing, which we'll release #'s soon, to the cyl head testing, it seems as when we add airflow there are huge gains at the higher rpm range while the lower rpms stay very close to stock. Ford has optimized the airflow of these engines at the lower rpms and adding airflow=adding rpms.

The Mustang enthusiast is going to have to realize that the red line on your tachometer just means "keep going" after these items are installed. The Coyote engine will be very happy at 6,500rpm+ once all of the induction items are installed and it will love every minute of it. If 3,000rpm grunt is what the end user is looking for, install a Whipple.

Coyote Recipe=4.10's/4.30's+Longtubes w/full exhaust + tune + CAI + cnc heads + cams + Boss intake=apprx 475-500rwhp and a Helluva lot of fun!!!

 

[JJ@WMS]

Nice Justin, Great job with the heads.

I'll be in touch,

JJ

 

[Wish I Had a Nice Car]

Coyote Recipe=4.10's/4.30's+Longtubes w/full exhaust + tune + CAI + cnc heads + cams + Boss intake=apprx 475-500rwhp and a Helluva lot of fun!!!

I just wonder how the drivability of that N/A would be over say a TwinScrew.

 

[GeorgeInNePa]

"What happened with the torque?"

It made more, just kidding George. I will have to pull up the sheets when we get in sometime tomorrow after the snow. The ported heads didn't make any sizeable #'s down low or in the mid range, so if anyone is looking for neck snapping parking lot manuevers don't expect them with the ported heads.

The price of the cyl heads exchanged is $1495 plus freight, fully assembled ready to go.

But it didn't loose any low and mid, right?

Are the valve springs stock?

Also, did you ever get any results on those cams you guys were working on?

 

[D98GT]

Wow..can't wait to read the article Justin. I'm also ready for some cam #s

 

[Justin@JPC]

No, the cyl head install didn't lose any low or midrange hp.

Yes, the valve springs are stock. We test the open/closed pressure on all springs before re-installing them.

We do have some 5.0L cam results but we are in the process of testing multiple grinds before we release the hp numbers. We basically tested the only/1st set of cams we had, which were "blower" grinds slated for my car, and we tested them on a ported head N/A engine. Not an optimum scenario, but we did see some huge gains, only in the higher rpm range, but nothing in the low to mid range to speak of.

If we don't get our N/A cams in soon I'll post up what we have and go from there. I'm itching to release the results myself.

 

[D98GT]

I'll test a set of N/A cams for you and post up the results


--Maddox

 

[GeorgeInNePa]

No, the cyl head install didn't lose any low or midrange hp.

Yes, the valve springs are stock. We test the open/closed pressure on all springs before re-installing them.

We do have some 5.0L cam results but we are in the process of testing multiple grinds before we release the hp numbers. We basically tested the only/1st set of cams we had, which were "blower" grinds slated for my car, and we tested them on a ported head N/A engine. Not an optimum scenario, but we did see some huge gains, only in the higher rpm range, but nothing in the low to mid range to speak of.

If we don't get our N/A cams in soon I'll post up what we have and go from there. I'm itching to release the results myself.

I was more concerned with torque, but thanks for all the info!

 

[Justin@JPC]

I'll see if I can dig up some TQ numbers for you tomorrow George. Thanks, JB

 

[GrnBullitt08]

Wish I had a 5.0 I would be sending my heads as we speak.

 

[2011IngotGt]

Very impressive- scribed

 

[RSKtakR]

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