Ford Racing Cobra Jet Intake Thread

[BOSSPOWER]

Anybody want my carbon fiber JLT tube, in perfect shape? $150 shipped!

 

[VoodooBoss]

I seen this on another forum. http://www.boss302forum.com/topic/15658-cobra-jet-intake-manifold-dyno-testing/

Tim already posted that here. His engine was not stock to begin with. We want to see what a stock engine with the CJ intake, CAI and tune will do.

 

[ArizonaBOSS]

Tim already posted that here. His engine was not stock to begin with. We want to see what a stock engine with the CJ intake, CAI and tune will do.

ding ding ding!!

 

[VoodooBoss]

ding ding ding!!

Did I win a cold beer?

 

[ford20]

Did I win a cold beer?

[youtube]http://www.youtube.com/watch?v=0f6l1QljpMo[/youtube]

 

[zzyzx]

501 RWHP and 397 Torque, they will try it cold tomorrow!

Those are some serious numbers! Based on the minimal torque increase, looks like the 500+ HP is happening way up there in the RPMs... beautiful!

 

[ArizonaBOSS]

Did I win a cold beer?

I think I will owe you a case by the time LeMons Thunderhill rolls around...I hope you like Coors Lite or Corona...

 

[zzyzx]

Next step would be ported-increased-flow heads. I think that's where I would stop. Should be making 500+ RWHP....dreamy

Nope, nothing to be gained there, the heads are as good as they're gonna get:

Likewise, Ford Racing and several of its partners tried to best the performance of the stock RoadRunner cylinder heads--to no avail. "We did our own CNC head. We actually got unported Boss heads. We were going to develop a Ford Racing head. Basically, from interfacing with the mainstream guys, we knew it would be difficult to get more power without putting bigger valves in it," said Robert Denewith, Powertrain Engineering supervisor at Ford Racing.

As it turned out, the mainstream guys were right; several companies tried to better the head via porting and didn't. The move to larger valves was deemed cost-prohibitive, but on the cam side of things, the work was already done on the Boss.

http://www.mustang50magazine.com/techarticles/m5lp_1207_coyote_5_0_engine/viewall.html#ixzz2QrghZtCr

 

[ford20]

Nope, nothing to be gained there, the heads are as good as they're gonna get:

Likewise, Ford Racing and several of its partners tried to best the performance of the stock RoadRunner cylinder heads--to no avail. "We did our own CNC head. We actually got unported Boss heads. We were going to develop a Ford Racing head. Basically, from interfacing with the mainstream guys, we knew it would be difficult to get more power without putting bigger valves in it," said Robert Denewith, Powertrain Engineering supervisor at Ford Racing.

As it turned out, the mainstream guys were right; several companies tried to better the head via porting and didn't. The move to larger valves was deemed cost-prohibitive, but on the cam side of things, the work was already done on the Boss.

http://www.mustang50magazine.com/techarticles/m5lp_1207_coyote_5_0_engine/viewall.html#ixzz2QrghZtCr

When talking heads, that is the part that everyone seems to forget about. These should yield some more gains while the stage 3 heads should get slightly better results with bigger intake and exhaust ports but by the same token sometimes bigger isn't better and I imagine for most N/A applications the Stage 2 heads would be the better option than the stage 3s

http://www.jpcracing.com/coyotergr-jpc-cnc-stage-2-cylinder-heads/

 

[zzyzx]

A Coyote head is not a Boss head. Not even made from the same alloy... bottom line if the CobraJet engineers determine the heads don't need to be massaged and only need to change the cams, I have no problem trusting their conclusions.

 

[BOSSPOWER]

Hi guys,

I would like to first that the team of POWER BY THE HOUR for making this happen, Frank, Jake and Ken. You will not find a more respectable and professional shop out there. Since we first met I told them I wanted to make the most RWHP N/A possible and they made it happen...501 RWHP & 397 TORQUE, all I can say is wow and thank you. Please stay tuned to the full review on 5.0 Mustangs magazine.

Regards,

Manuel

 

[racered302]

Tim already posted that here. His engine was not stock to begin with. We want to see what a stock engine with the CJ intake, CAI and tune will do.

My bad, I must have missed it then reposted. The only mods I saw on this page was the exhaust.

 

[racered302]

Tim already posted that here. His engine was not stock to begin with. We want to see what a stock engine with the CJ intake, CAI and tune will do.

I think you need to add the throttle body to that list.

 

[gremlinsteve]

A Coyote head is not a Boss head. Not even made from the same alloy... bottom line if the CobraJet engineers determine the heads don't need to be massaged and only need to change the cams, I have no problem trusting their conclusions.

Im a cyl head guy done many many sets for all kinds of
Class racing
I can tell you with 100 percent certainty that there is room for improvement
Dont beleive me ill do a set for anyone here and in there testing if the car does not dyno
trap speed higher et faster
Lap tome faster ill give em the heads its simple there is not a single set of strickly cnc heads in any class racing holding a record they have all been touched by hands after the cnc work

I think at one point i remember hearing fords tune couldnt be beat either

Steve

 

[Justin]

Im a cyl head guy done many many sets for all kinds of
Class racing
I can tell you with 100 percent certainty that there is room for improvement
Dont beleive me ill do a set for anyone here and in there testing if the car does not dyno
trap speed higher et faster
Lap tome faster ill give em the heads its simple there is not a single set of strickly cnc heads in any class racing holding a record they have all been touched by hands after the cnc work

I think at one point i remember hearing fords tune couldnt be beat either

Steve

from what I gathered from the article is they were saying there is more in the head only if you go with bigger valves and for the added cost it wasnt worth the extra money for the power gain when they got more power from a cam swap which is cheaper for them on a production level.

long story short.....need to run bigger valves to gain hp out of these boss heads.

 

[VoodooBoss]

My bad, I must have missed it then reposted. The only mods I saw on this page was the exhaust.

No worries, this thread is getting long. Yep the TB goes hand and hand with the intake.

 

[steveespo]

Is there even room in the Boss head for larger valves? I don't know the dimensions but the spacing betwee both the intake and exhaust valves looks pretty close already there has to be room for the new seats to fit in the casting if you upsize.
Steve

 

[gremlinsteve]

Is there even room in the Boss head for larger valves? I don't know the dimensions but the spacing betwee both the intake and exhaust valves looks pretty close already there has to be room for the new seats to fit in the casting if you upsize.
Steve

Ill say one word
i know i can pick up about 20 cfm using my method and cutter

Valvejob.


Im being vague but trade secrets are coveted greatly in that field

 

[NewBossowner]

Im being vague but trade secrets are coveted greatly in that field

Indeed they are, and totally understandable. It makes money, you don't give it away.

 

[steveespo]

3 or 5 angle valve job? Do you know of anyone installing larger valves?