5.0 Kenne Bell Potential

[1SickFox]

Hi guys, i'm just trying to figure out what the most anybody has got out of a Kenne Bell blower with a 302 based engine. I don't find alot of articles or information regarding kennebell's and 5.0's. I've always wanted one but rarely have seen anything push over 400rwhp out of them. I remember once there was a guy building a 347 KB setup on this site, but never did hear what happen to it? Anyways, What do you think a Kenne Bell could put out with a good tune and the setup listed below? The site claims "785HP rating. 6-18 psi boost". Do you really think that is possible? Why haven't i seen anybody do that before? I could be wrong but i only see mid to high 400's... Anybody?



I'll list the website i'm refering to.
Blowzilla Supercharger / Flowzilla Manifold



Setup
347 Stroker/Forged - Aftermarket block
TFS 205cc CNC'd heads
GT-40 Lower/ported
8.5:1 - 9.0:1 Comp
Kenne Bell 2.1 Blowzilla w/Flozilla inlet
80mm TB
3" exhaust
etc...



My goal is 650hp or more.. Which is easily accomplishable with a T-trim. I'd just love to have a Kenne Bell though.

 

[SVT3183]

my car with a KB 1.7 flowzilla/blowzilla at 8# puts down 350 hp and 380 torque to the wheels. i upgraded to the flowzilla/blowzilla from the standard inlet/outlet and gained no power. KB puts out at lot of hype numbers wise.

 

[Bullitt347]

No Hype, it is all in the combo. My friends 331 cid 93 convert with a Kenne Bell put down 550 whp and 625 wtrq! On pump gas. And that is with only a AFR 185 head. Now we are stepping it up to AFR 225's and a bigger cam and better headers. Should easily make over 600 whp. This is with 18 psi at the engine. Again No hype, it is ALL in the combo. (proper tuning helps)
3450 lbs W/Driver 10.6 @ 137mph banging gears!

 

[1SickFox]

No Hype, it is all in the combo. My friends 331 cid 93 convert with a Kenne Bell put down 550 whp and 625 wtrq! On pump gas. And that is with only a AFR 185 head. Now we are stepping it up to AFR 225's and a bigger cam and better headers. Should easily make over 600 whp. This is with 18 psi at the engine. Again No hype, it is ALL in the combo. (proper tuning helps)
3450 lbs W/Driver 10.6 @ 137mph banging gears!

More information/pictures?

 

[1990Coupe]

Daggar was the one building the combo. Shame he's not here anymore. He was a big advocate of Kenne Bell blowers. He loves them.

 

[90lxcoupe]

The problem with trying to get that much power out of that blower is that it dosent move enough air.

It's only a 2.1L blower, if you look at all the cobra/lightning guys making big power they are using blowers with at least 2.4L sizes, and most guys max out the 2.4's at 550 rwhp, the guys that are putting big numbers up are using blowers that move ALOT of air, like the 2.8, 3.1, 3.4's. To me it's be kinda like comparing an S-trim to a T-trim.

 

[a885.0]

The problem with trying to get that much power out of that blower is that it dosent move enough air.

It's only a 2.1L blower, if you look at all the cobra/lightning guys making big power they are using blowers with at least 2.4L sizes, and most guys max out the 2.4's at 550 rwhp, the guys that are putting big numbers up are using blowers that move ALOT of air, like the 2.8, 3.1, 3.4's. To me it's be kinda like comparing an S-trim to a T-trim.

This is incorrect the 2.4L does not max out at 550rwhp, the cobra guys are making between 550-615rwhp with the standard 2.2L/2.1L blower and stock engines, and the 2.4,2.6, and the 2.8 can make some big steam...Correct me if Iam wrong but the fox body KB's are not intercooled so that makes for some very hot inlet temps...

 

[1990Coupe]

I want a KB simply because i don't race often at all. My car is my weekend toy, so stop light to stoplight with the occasional dipping into the throttle.. It stinks though how expensive these kits are.. And i cannot ever find any deals whatsoever for them on Craigslist or ebay.

 

[a885.0]

No Hype, it is all in the combo. My friends 331 cid 93 convert with a Kenne Bell put down 550 whp and 625 wtrq! On pump gas. And that is with only a AFR 185 head. Now we are stepping it up to AFR 225's and a bigger cam and better headers. Should easily make over 600 whp. This is with 18 psi at the engine. Again No hype, it is ALL in the combo. (proper tuning helps)
3450 lbs W/Driver 10.6 @ 137mph banging gears!

Sounds like a sick set up and runs very well, but 18psi with no intercooler? does he run a meth. set-up? What do you think this car would run with a more efficient blower? one with an intercooler and much cooler inlet temps. It would make more power with less effort..and run faster.

 

[Bullitt347]

It is intercooled AND has water/meth. Uses the intercooler core from a 03/04 Cobra in a custom upper intake sitting on top of a Trick Flow R lower. This of course requires custom inlet and outlet manifolds for the 2.1L Kenne Bell. The 2.1 is rated for up to 21 psi. The 18 psi at the engine is AFTER intercooler. Using a FAST EFI system. And this with a hyd roller cam that has .544 lift int. and .560 lift exh. on a 114 LSA and only 220 deg int. 224 deg. exht. duration @.050. So that is why we think it will make BIG power with the bigger heads and cam and exhaust. Data logged air inlet temp of 190 degrees at the end of the 1/4 mile. Starting air inlet temp was 105 degrees on a 90 degree day. Only putting 24 degrees of timing in the engine. This will all change when the bigger heads and cam go in tho. Should be fun...............Oh yeah...just remembered, changing from a TKO to an auto, that alone should put the car in the 9's. Data logging showed that .7 to .8 of a sec was being used just to shift thru the gears in a 1/4 mile pass. Another indicator of the cars power is the trap speed. 137 mph is very fast for only 10.6 sec. 1/4 mile time.

 

[a885.0]

It is intercooled AND has water/meth. Uses the intercooler core from a 03/04 Cobra in a custom upper intake sitting on top of a Trick Flow R lower. This of course requires custom inlet and outlet manifolds for the 2.1L Kenne Bell. The 2.1 is rated for up to 21 psi. The 18 psi at the engine is AFTER intercooler. Using a FAST EFI system. And this with a hyd roller cam that has .544 lift int. and .560 lift exh. on a 114 LSA and only 220 deg int. 224 deg. exht. duration @.050. So that is why we think it will make BIG power with the bigger heads and cam and exhaust. Data logged air inlet temp of 190 degrees at the end of the 1/4 mile. Starting air inlet temp was 105 degrees on a 90 degree day. Only putting 24 degrees of timing in the engine. This will all change when the bigger heads and cam go in tho. Should be fun...............Oh yeah...just remembered, changing from a TKO to an auto, that alone should put the car in the 9's. Data logging showed that .7 to .8 of a sec was being used just to shift thru the gears in a 1/4 mile pass. Another indicator of the cars power is the trap speed. 137 mph is very fast for only 10.6 sec. 1/4 mile time.

Sounds pretty serious, but this isnt your everyday bolt-on kenne bell s/c kit which the OP was asking about, but I guess it does show what you could do with a 2.1L bell with some fab work...got any pics? 137mph deff. shows 9sec. potential..

 

[foxmustangman]

Another part of the reason may be that almost EVERYONE who has a Kenne Bell on their fox bought it before they came out with the Blowzilla/Flowzilla. Flowzilla can put out a lot more power than the standard 5.0 KB.

 

[85_SS_302_Coupe]

I'm pretty sure there's a guy local running deep in the 10s with one.

 

[LaserSVT]

It is intercooled AND has water/meth. Uses the intercooler core from a 03/04 Cobra in a custom upper intake sitting on top of a Trick Flow R lower. This of course requires custom inlet and outlet manifolds for the 2.1L Kenne Bell. The 2.1 is rated for up to 21 psi. The 18 psi at the engine is AFTER intercooler. Using a FAST EFI system. And this with a hyd roller cam that has .544 lift int. and .560 lift exh. on a 114 LSA and only 220 deg int. 224 deg. exht. duration @.050. So that is why we think it will make BIG power with the bigger heads and cam and exhaust. Data logged air inlet temp of 190 degrees at the end of the 1/4 mile. Starting air inlet temp was 105 degrees on a 90 degree day. Only putting 24 degrees of timing in the engine. This will all change when the bigger heads and cam go in tho. Should be fun...............Oh yeah...just remembered, changing from a TKO to an auto, that alone should put the car in the 9's. Data logging showed that .7 to .8 of a sec was being used just to shift thru the gears in a 1/4 mile pass. Another indicator of the cars power is the trap speed. 137 mph is very fast for only 10.6 sec. 1/4 mile time.

I would love to see a couple engine pics of that beast!

 

[85_SS_302_Coupe]

I'm pretty sure there's a guy local running deep in the 10s with one.

Let me correct myself....He's deep in the 9s with one.

YouTube - KENNEBELLCOBRAS 9.64

 

[LaserSVT]

Let me correct myself....He's deep in the 9s with one.

YouTube - KENNEBELLCOBRAS 9.64

Pretty effin sweet!

Hey, your car is an 85 right? Whats with the nose?

 

[foxmustangman]

^Its badass, thats whats with the nose!

 

[Gearbanger 101]

The site claims "785HP rating. 6-18 psi boost". Do you really think that is possible? Why haven't i seen anybody do that before? I could be wrong but i only see mid to high 400's... Anybody?

Be verrrrry skeptical of KB claims. Just because the blower is rated to that power level, doesn't mean the kit is.

And I don't care how much race gas you throw at a 2.1L, you're never going to come close to 785hp.

The KB positive displacement kits are a great street set up, to be sure. But anyone buying into their bull**** sales propaganda thinking they’ll duplicate those power figures is going to be sorely disappointed in the outcome.

You need to keep in mind, when Kenne Bell dyno tests their systems, they do so with a healthy tank full of race gas and ludicrous amount of timing. Nothing anyone would ever consider running on the street

Furthermore, rating a supercharger for boost is absolutely retarded. Boost is nothing more than a measurement of restriction and will vary depending on modifications made to the inlet and outlet side of the engine. Add restriction to the intake side, boost drops, open up the intake side, boost rises. The opposite is true for the exhaust side. Making a statement like...

The combination made an amazing 508HP at 9.2 psi and 484 at 7.5 psi with a pavement ripping flat torque curve (453-483 ft lbs). 483 ft lbs @ 4000 rpm. That's 500" engine torque numbers. The boost never varied or dropped off from 2500 up - and there was another 9 psi left in the supercharger.

....should tell you just how full of **** they really are.

Bottom line....you want a healthy street engine with stump pulling low end torque go ahead and buy a Kenne Bell. But if you're doing so hoping to see 650rwhp+ out of it, on pump gas (even spraying high volumes of nitrous or water/methanol into the charge to keep things together), you're setting yourself up for disappointment.

 

[Bullitt347]

I would love to see a couple engine pics of that beast!

Since the engine is out of the car right now for the upgrades, I will see if I have some pic's from last year in a file and I will post them if I find them.