Originally Posted By: ZeeOSix
The Roush stage 3 link I posted above showed starting at $19,500 ... but that Roush Mustang is much more than just the engine, has lots of chassis mods, etc too. Whipple stage 2 is about $8400, link below.
Here's a Roush stage 1. Dyno chart is RWHP of course. Look how insanely linear the HP curve is. Stock GT is doing about 390 RWHP for comparison.
https://www.mustang6g.com/forums/showpost.php?p=1271124&postcount=51
Magnacharger kit, car has auto tranny which will give a little less dyno RWHP.
https://www.mustang6g.com/forums/showpost.php?p=1573630&postcount=92
Stage 2 Whipple ... nuts.
https://www.mustang6g.com/forums/showpost.php?p=1691569&postcount=102
https://whipplesuperchargers.com/index.php?dispatch=categories.view&category_id=313
The coyote seems to be a killer platform for mods.
Unsurprisingly Roush really did their homework on the injection and timing system to keep detonation at bay.
I guess time will tell how long it holds up, but thats pretty amazing.
Id have figured that with 200 + HP on the stock mill the thing would deep fry the rings with detonation and be blowing oil out the dipstick tube in no time.
Im used to more torque than Hp with blower setups so seeing close to 700HP and 545 looks weird to me, but I primarily deal with them in marine engines - homebuilts come in all the time blowing out out the breathers and dipstick tubes guys asking what to do..
My own na/injected engines make V10 700/ 650 and the BBC makes 725 and 819