Whipple's NEW 4.5L 275AX 07-2014 GT500 Supercharger

pro 5.0

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Not a creature was stirring not even a mouse. What happened to all the hype behind the 4.5L ?
 

black03

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Not a creature was stirring not even a mouse. What happened to all the hype behind the 4.5L ?

Check the "Massive Attack" article in this months issue of 5.0 Mustang & Super Fords Magazine featuring our 2013 GT500.

The results are quite impressive to say the least.

Jared
 

BIRDDOC

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Check the "Massive Attack" article in this months issue of 5.0 Mustang & Super Fords Magazine featuring our 2013 GT500.

The results are quite impressive to say the least.

Jared

Nice article!

The write up failed to mention what boost level was used to get to that power.
What was the boost?

Also, was N20 used to get there?

Thanks!
 

black03

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Nice article!

The write up failed to mention what boost level was used to get to that power.
What was the boost?

Also, was N20 used to get there?

Thanks!

Thanks a bunch. The car was making 28psi and no spray was used. Blower only.

Jared
 

John@Lethal

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All the details can be found here. 5.0 Finally has the article for viewing in case you guys didn't pick it up at Newstands!

4.5-liter Whipple Supercharger Installation - Massive Attack

2013-ford-shelby-gt500-dyno-test.jpg


dyno-graph.jpg



Enjoy!
 

biminiLX

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Awesome power!
It did mention some belt slip?
I also didn't see the boost in the article but 28# and 7500rpm is some serious steam, love it!
-J
 

biminiLX

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Really makes you wonder if 1300-1400hp range is possible with a large turbo setup due to the belt slip.

Anything is possible with enough cash :loser:
Yes people have made that much power turbo/mod motor and ShelbyMark has made more 4.2/4.7 KB.
Snow White is unique with still having a manual trans, I love that :rockon:
-J
:beer:
 

tomshaze

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Update

Just wanna throw a update


I got the crank cyro treated and pinned with a new stock crank pulley


Car is now running 19 psi at 6900 rpm with the same set up just ford gt cams

Just wanted to throw a update in here

Also I only spent 5500 when it was all said and done and 1500 of that was sending the heads to get redone with mike at l&m cuz 16 of the valve where bent so I think it was all worth it
 

19COBRA93

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Pinning the crank is a great idea. It's something I'd like to do.

Something to consider, ARP doesn't officially make a crank bolt for the GT500 crank, but their 674-1010 (pack of 5) works perfectly. You can achieve a much greater torque with it compared with the factory stretchy bolt. The higher torque value takes a lot of the load off the snout itself and transfers it to the journal, which is much more stout.
 

tomshaze

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Never thought of that but I feel I will be fine cuz I bought a new bolt from ford incase I take it off for some reason I would try arp or buy a brand new bolt never again will I reuse that bolt it has cost me to much


Pinning the crank is a great idea. It's something I'd like to do.

Something to consider, ARP doesn't officially make a crank bolt for the GT500 crank, but their 674-1010 (pack of 5) works perfectly. You can achieve a much greater torque with it compared with the factory stretchy bolt. The higher torque value takes a lot of the load off the snout itself and transfers it to the journal, which is much more stout.
 

12gt500

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Just wanna throw a update


I got the crank cyro treated and pinned with a new stock crank pulley


Car is now running 19 psi at 6900 rpm with the same set up just ford gt cams

Just wanted to throw a update in here

Also I only spent 5500 when it was all said and done and 1500 of that was sending the heads to get redone with mike at l&m cuz 16 of the valve where bent so I think it was all worth it

Hey I have a q. I am building a short block with a 3.6 kb and e85 stuff. Will my stock lower pulley be safe if I double key the new cj crank?
 

19COBRA93

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Hey I have a q. I am building a short block with a 3.6 kb and e85 stuff. Will my stock lower pulley be safe if I double key the new cj crank?

You'll have to have your lower pulley double keyed as well. That is a different process than keying a crank, so be sure your machine shop has the ability.
 

12gt500

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If you are building a new motor, then yes, go ahead and just get it done.

this is what i was thinking. the only downside is now i will have to buy bigger injectors. to run the 10% lower or can i get stock size (thats probably stupid)

and last q the iw 10% is safe right? i don't drive often but when i do i like to drive it like i stole it.
 

biminiLX

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this is what i was thinking. the only downside is now i will have to buy bigger injectors. to run the 10% lower or can i get stock size (thats probably stupid)

and last q the iw 10% is safe right? i don't drive often but when i do i like to drive it like i stole it.

Yes, both IW and ATI both have stock sized SFI balancers/lower pulleys.
-J
 

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