Quote:
Originally Posted by Jus Cruisin
I've had two Roush Mustangs, one 4.6 and one 5.0. Both used completely stock Mustang GT blocks. The stock 4.6 handled 500+ hp and the 5.0 handles close to 700 hp easy. No need to do any internal engine work with a Roush setup. Plenty of Mustang guys running blowers with stock internals. VMP sells a good Roush - type supercharger. He has some really good tunes for automatics. His wife's Mustang is one of the quickest stock automatic Mustangs in the country.
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It is important not to mislead those who have not worked with high output supercharged engines. The n/a experience only in the most minimal way prepares you for a blown gas engine experience. There are few building practices other than cleanliness that transfer over.
Lets assume for a moment that you do not build your engine but just put a blower on a n/a OEM long block like the OP wants to. I am going to pick on a friend's 03 Cobra converted to an auto trans and using an 11 year old long block, the one that was in the car when it was delivered.
In addition to the auto trans and Whipple blower the only other changes to the car were the addition of long tube headers and a retune for the blower and headers. Stock cams, heads, pistons, block, crank, rods — stock off the showroom floor OEM engine eleven years old.
The car with driver weighs just under 3500 lbs. In the Youtube link below you can watch him at the 2014 WCF Super Street Championships win the event! He ran 8.3x's on the OEM long block the car was delivered with. In 2016 after an engine rebuild and swapping over to a single large turbo he was running 7.6x's at over 175 mph at the 2016 WCF event.
Link #1 2014 WCF => [ame="https://www.youtube.com/watch?v=L4tzfgNUiAo"]
Harold @ 2014 WCF[/ame]
Link #2 2016 WCF => [ame="https://www.youtube.com/watch?v=je9JNHb7tVU"]
Harold @ 2016 WCF[/ame]
When you put a blower on these engines
The World Changes! If you try to sneak by with n/a parts you will not be as happy as if you used the correct supercharged parts.
In the end it is only your money and your parts. If you don't mind, then it don't matter.
The supercharged versions of these engines will absolutely astound you when you see or rather experience how potent they are. Now put one of them into a car that is 1000lbs lighter than Harolds car and use the wrong parts.
Starting to get the picture ...
Ed