4.0 for my 03 cobra has arrived

Status
Not open for further replies.
aoc racer

aoc racer

Ford is hella cool
Established Member
Joined
Dec 14, 2003
Messages
5,552
Location
Tustin, CA
Holy Mother of God! that thing is massive. Congrats, enjoy and don't kill yourself. :beer:
 
GodStang

GodStang

Well-Known Member
Established Member
Joined
Aug 20, 2003
Messages
14,723
Location
Aiken, SC
saleen302 said:
That is a big blower. I personally do not think it is going to make 1000 RWHP on a 4.6.

Eventhough the 3.4 whipple is more than enough blower for an 03 -04 Cobra, the advantage of the 4.0 blower is that due to the increased cfm, it will make significant more power per pound of boost than the 3.4 would.

I have a friend who has the whipple 4.0 blower on a 2010 GT500. He currently makes 758 RWHP with low 700s or so RWTQ @ 19 lbs of boost. He used to have a smaller whipple which at 19 lbs made mid 600s in RWHP and low 600s in RWTQ. So, just by changing the blower and nothing else (ofcourse, bigger injectors and modifications to the fuel system), and keeping the boost level exactly the same, the car picked up over 100 RWHP and RWTQ. The power curve is much better, and he picked up almost 10 mph in the quarter mile by doing just this swap.

So, while the Cobra in question here might not make 1000 RWHP, it should run significantly stronger than almost any 4.6 litre 3.4 whipple cobra, which means buying the blower over a smaller whipple is not a waste of time IMO.
Click to expand...

So much is wrong in this paragraph I want to cry...

Good Luck to the OP.
 
saleen302

saleen302

New Member
Established Member
Joined
Aug 27, 2005
Messages
150
Location
Canada
thomas91169 said:
Seeing that GodStang is putting down the same 700whp with a 2.8H at the same boost level with less displacement im sure he knows something......
Click to expand...

Maybe the 302VT stroker motor that GodStang is running has higher compression than what comes in a stock 03 - 04 Cobra. I know stock 03 - 04 Cobras are 8.5:1 compression or so. Not sure what compression a stock GT500 comes with. One could easily bump up compression upto say 9.5:1, and still make 20 psi of boost safely using meth injection. That bumped up compression combined with the 302 stroker, heads, cams and all the rest of the stuff GodStang is running will result in big gains, no doubt about it. But, that does not change the fact that a 4.0 blower on GodStang's car will make more power than the current 2.8 setup will.
 
S

SaleenSR

New Member
Established Member
Joined
Mar 8, 2002
Messages
230
Location
Concord
That new 4.0 Blower is beautiful. That is going to be one fun car when it is done!
 
brad7131

brad7131

The Spocker!
Established Member
Joined
Dec 2, 2007
Messages
183
Location
Las Vegas, NV
saleen302 said:
Maybe the 302VT stroker motor that GodStang is running has higher compression than what comes in a stock 03 - 04 Cobra. I know stock 03 - 04 Cobras are 8.5:1 compression or so. Not sure what compression a stock GT500 comes with. One could easily bump up compression upto say 9.5:1, and still make 20 psi of boost safely using meth injection. That bumped up compression combined with the 302 stroker, heads, cams and all the rest of the stuff GodStang is running will result in big gains, no doubt about it. But, that does not change the fact that a 4.0 blower on GodStang's car will make more power than the current 2.8 setup will.
Click to expand...

I'm new to this power adder stuff, so take my input with a grain of salt, but the 5.4 in the GT500 probably can actually take advantage of the added displacement of the 4.0 Whipple, where-as with the stock 4.6 in a Termi, a smaller blower would probably make just as much power, if not more, because of how much power that big mofo takes to spin.

But like I said, I may be wrong.
 
saleen302

saleen302

New Member
Established Member
Joined
Aug 27, 2005
Messages
150
Location
Canada
brad7131 said:
I'm new to this power adder stuff, so take my input with a grain of salt, but the 5.4 in the GT500 probably can actually take advantage of the added displacement of the 4.0 Whipple, where-as with the stock 4.6 in a Termi, a smaller blower would probably make just as much power, if not more, because of how much power that big mofo takes to spin.

But like I said, I may be wrong.
Click to expand...

Considering that the GT 500 picked up 100 RWHP & RWTQ by going from a smaller twin screw to this one with no other changes, let us conservatively estimate the smaller displacement 4.6 Cobra picks up half of that with the same blower swap i.e. 50 RWHP & RWTQ. To make less power than before, spinning the new bigger blower will have to consume an additional 50 RWHP & RWTQ over the older blower. I don't see that happening....
 
Status
Not open for further replies.

Users who are viewing this thread

Total: 6 (members: 0, guests: 6)


Top