S550 / 5.2 dyno shoot out -- 3.2 Kenne Bell vs Gen 5 whipple vs Hellion TT

[olaosunt]

Interesting day on the Dyno. Decided to run my boosted "5.2" S550 Mustang GT's back to back on the same dyno/same day .

KB car is a 2015 with BES built 5.2 . Bored and sleeved Gen 2 coyote block/Boss crank. Custom Ross 3.7 pistons(11:1 CR), Manley H rods/GT 350 heads with Ford racing cams . 3.2 Kenne Bell with 20 % OD ATI- 3.25 upper

Hellion car is a 2015 with RPG built 5.2. Non sleeved Gen 2 Voodoo block/Boss crank. Manley pistons(11:1 CR), Manley H tuff rods/GT 350 heads with Ford racing cams. Top mount Hellion Kit with 6266 BB precisions.

Gen 5 whipple car is a 2018 with Fonzie built 5.2 Non sleeved Gen 2 voodoo block/Boss crank. Mahle/voodoo pistons(12:1 CR), voodoo specific Manley rods/Stock Gen 3 heads/cams. Gen 5 whipple 20 % OD . 3.375 grip tech upper

All 3 cars had drag radials . The 2015's had heavy AMR wheels with 305/45/18 Nitto's and the 18 had lighter race stars with 275/40/17 M&H's.
The tires on the Hellion car were slipping badly on the dyno and possibly also on the KB car,




It would probably have been more interesting if I included the GT 350 /whipple but I recently had to go to a bigger pulley as my "kill" 2.75 grip tech was slipping and it may not have been able to compete.




Guess which car is what color graph LOL

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[Inthehighdesert]

My 20Gt350, Whipple, Whipple tune, was 752.

Interesting day on the Dyno. Decided to run my boosted "5.2" S550 Mustang GT's back to back on the same dyno/same day .

KB car is a 2015 with BES built 5.2 . Bored and sleeved Gen 2 coyote block/Boss crank. Custom Ross 3.7 pistons(11:1 CR), Manley H rods/GT 350 heads with Ford racing cams . 3.2 Kenne Bell with 20 % OD ATI- 3.25 upper

Hellion car is a 2015 with RPG built 5.2. Non sleeved Gen 2 Voodoo block/Boss crank. Manley pistons(11:1 CR), Manley H tuff rods/GT 350 heads with Ford racing cams. Top mount Hellion Kit with 6266 BB precisions.

Gen 5 whipple car is a 2018 with Fonzie built 5.2 Non sleeved Gen 2 voodoo block/Boss crank. Mahle/voodoo pistons(12:1 CR), voodoo specific Manley rods/Stock Gen 3 heads/cams.

All 3 cars had drag radials . The 2015's had 3=heavy AMR wheels with 305/45/18 Nitto's and the 18 had lighter race stars with 275/40/17 M&H's.




It would probably have been more interesting if I included the GT 350 /whipple but I recently had to go to a bigger pulley as my "kill" 2.75 grip tech was slipping and it may not have been able to compete.




Guess which car is what color graph LOL

 

[olaosunt]

Edited original post to include Pulley set up on Gen 5 whipple.

 

[olaosunt]

My 20Gt350, Whipple, Whipple tune, was 752.

I added GT 350/whipple dyno graph from back in June so not quite apples to apples . 3. inch 6 rib . Something was also slipping on the dyno only have speed graph. I tried a 2.75 pulley but it would just throw the belt .
Red=Hellion
Blue = KB
Dark green = Gen 5 whipple
light green= GT350/Gen 3 whipple..

I reviewed the logs and the KB car was not adding the 5* of timing it normal does . Timing typically ramps quickly to 21* but it was a slow increase up to only 19 * on that pull .
All cars had pump E85(probably got some winter blend) and I noticed the KB car had the lowest content per the E85 gauge(The 18 had the highest content ) .
I think I am going to run it again with ignite just to see

 

[Drsmith33]

That’s some power!

 

[engineermike]

Red is Hellion.

I can’t tell between the other two. Green made more power and torque with less boost, but I don’t know whether supercharger efficiency, heads/cam, or compression ratio were predominant.

 

[Andy13186]

I wonder if the gen 5 whipple would have gone higher if revved to 8k. I am making my peak power at 8k rpm on my gen 5 whippled gen 3 coyote. Do you have any dragy 60-130 or 100-150 comparisons of these setups, or 1/4 mile runs?

 

[olaosunt]

I wonder if the gen 5 whipple would have gone higher if revved to 8k. I am making my peak power at 8k rpm on my gen 5 whippled gen 3 coyote. Do you have any dragy 60-130 or 100-150 comparisons of these setups, or 1/4 mile runs?

May be , but it looks like the power curves on the 18 had flattened at 7500 .
I also think the dyno reads boost higher . The E boost read peak boost @ 16 psi on the Hellion car . I only have the inaccurate eco boost gauge(for looks ) on the 18 but per whipple chart the 3.375 pulley should be making 20 psi , may be lower with headers(no cats ) . I can’t recall for sure what KB’s chart says the 3.25 should be making but I think it was lower than 22 .
So the dyno boost reading may be up to 3 psi higher

Regarding 1/4 mile times(no dragy), the Hellion car(6r80/3.31 rear) trapped 155 mph at this boost setting 2 years ago when I last ran it.

The KB car (Magnum XL /2.66/3.31 rear crossing traps in third) has trapped 149 mph with this pulley with a different but same spec motor .No passes with this motor and now 4.10 rear

No passes yet with this pulley/motor (10r80/3.15 rear) combo on the 18 . I did a couple of shake down passes with new motor this year with a 3.75 pulley and highest trap was 144 . If I extrapolate I assume it would trap at about 150 mph (hopefully more ) with this combo .
Plan is to go down to a 3 inch pulley in the future .

Fuel wise all , 4 cars have ID1300’s . The Hellion/KB and GT 350 have a triple walbro/ 274pump set up (Fore in the Hellion /KB and division X hat in the GT 350 )

The 18 has the DWx 2 hat/pump and they be maxed as the flp was starting to dip / pulling less fuel per tune
On lower boost STFT are -10 but it was rising to -3 with this pulley . When I pulley down I have a triple pump Fore hat ready to go .

The 18 is PBD tuned and the others are Lund .

 

[kevinvan6000]

How do you find the 275/40/17 M&H's on the 18? Just wondering how they compare to the other setups with the taller tires. Thanks

 

[olaosunt]

How do you find the 275/40/17 M&H's on the 18? Just wondering how they compare to the other setups with the taller tires. Thanks

I like them . I mistyped as they are actually 275/50’s

They have a comparable ride to the 305/45 18 Nitto R’s (Gen 1) and will hook on the street. I also have them in 325/45 17‘s which are taller but also heavier .
I had them (275’s) on the last pass made in this car and they did not spin. ... but 3.15 rear /Second gear leave/bigger pulley and crap 60 ft though.
I think the car would have run better /left harder with a first gear leave with that pulley /rear end but may have spun those tires -
I don’t know if they will hold with smaller pulley now even with a second gear leave but I doubt they will leaving in first gear

Plan next time out will be with the ET R’s (305/45 17’s) which are what I usually run at drag strip cause I know for sure they will hook .

 

[kevinvan6000]

I like them . I mistyped as they are actually 275/50’s

They have a comparable ride to the 305/45 18 Nitto R’s (Gen 1) and will hook on the street. I also have them in 325/45 17‘s which are taller but also heavier .
I had them (275’s) on the last pass made in this car and they did not spin. ... but 3.15 rear /Second gear leave/bigger pulley and crap 60 ft though.
I think the car would have run better /left harder with a first gear leave with that pulley /rear end but may have spun those tires -
I don’t know if they will hold with smaller pulley now even with a second gear leave but I doubt they will leaving in first gear

Plan next time out will be with the ET R’s (305/45 17’s) which are what I usually run at drag strip cause I know for sure they will hook .

Ah ok. I was wondering about that when I read your first post...I looked at the 275/50 M&Hs when I was shopping for a 28" tire. I ran 275/40/17 ET Street Rs last season and I had traction issues with them at the track and I'm in the 700-750 rwhp range. Was just wondering how you were getting the 40s to work with the extra 300hp lol. I picked up a set of 28x10x17 Hoosier DBRs for this season. Thanks

 

[olaosunt]

Ah ok. I was wondering about that when I read your first post...I looked at the 275/50 M&Hs when I was shopping for a 28" tire. I ran 275/40/17 ET Street Rs last season and I had traction issues with them at the track and I'm in the 700-750 rwhp range. Was just wondering how you were getting the 40s to work with the extra 300hp lol. I picked up a set of 28x10x17 Hoosier DBRs for this season. Thanks

We will have to compare notes as I was going to run those hoosiers (Brand new / first time out) the last day off the season with this pulley combo /new tune (old tune with bigger pulley was shifting at 7000 rpm )
it was bright and sunny when I was heading out ..... but got rained out .

Thank God I got to the track before it started to rain . I waited for hours for the roads to dry before I dared to drive home

 

[tdstuart]

Dope cars!

Just curious, why build 3 mustangs? Most people would consider one enough lmao.

 

[biminiLX]

Great comparison!
Glad I can still pick out the turbo powder curve.
That timing drop off on the turbo car will make a huge difference.
Still and again, VERY cool comparison same dyno same day!
-J

 

[biminiLX]

Dope cars!

Just curious, why build 3 mustangs? Most people would consider one enough lmao.

Like I tell my wife (while I own 4 Mustangs). There are much much worse hobbies/passions (addictions? ) so you can’t be too mad.
-J

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