So.. if I went kenne bell, how MUCH HP can I get with 10:1 compression?

[Pokageek]

I know this is a similar question to the one b4 but if I went with a kenne bell, given I would have to dumb down the timing, how much HP and TQ could I get out of the car without blowing it up, lol. Thanks :SNSign:

p.s. Is there a difference between a kenne bell and lke a 347/383 or somethingin terms of flat usable tq curve? Like is there more usable TQ from a larger engine that the kenne bell 306? Thx.

 

[OrangeMustangGt]

ITS FUNNY. Your making more power than alot of 347 combos ive seen.

If i was you, i would expect to make block splitting hp easily with boost, even low....SO, that is probably your limiting factor....500~550 fly is the most i'de be happy with

 

[Pokageek]

Thanks man but my numbers are flywheel HP not rear wheel posted. I am sure there are a lot of 347's making tons more than me, lol. rwhp I am just under 300 and 310 rwtq.

I am thinking in terms of a 2.2L with 6psi but I should also consider a 1.5-1.8 kit I guess if I want to save some$$.

 

[SVT3183]

i'd run something intercooled if i was you and your timing is going to be super low with a kb

 

[urban96]

i agree, if your gonna boost it run something intercooled. or atleast use meth injection

 

[Car Nut]

What intercooler options are there for our 94/95 stang?

Isn't the KB charger supposed to create less heat than other superchargers? I really like the idea of a 302 KB over a 347 N/A, however, cooling is a major issue. I don't use my stang everyday, but I do use it on business trips (anywhere from 2 to 6 hours on the Interstate) and on every weekend. Emissions is a very big deal in my area, so another bonus for the supercharged route in terms of having no worries at all with emissions.

Meth injection sounds good, but doesnt' it require a fill up pretty frequently? Not sure if there is an ongoing expense with the meth injection, also.

 

[final5-0]

Don 95Vert who comes on here every now and then
has most likely forgotten more than a lot know about KB's

He has gone faster than most others with that blower choice

I'd search out his past posts for trustworthy info

I did several years ago and found he has answered the same Q's
over and over here and even all the more so over at Corral.

Grady

 

[20new5.0]

If your running a stock block I think your pretty much limited to 500-550 at the flywheel.

 

[S351R"Animal"]

With that compression you won't get much of a benefit from the blower due to having to run low boost numbers. It won't run real well on pump gas if it would even run on it. The other question is will the factory style electronics support it. If you had a FAST, Accel, or Big Stuff set-up then you could tune it. Regardless you would have to have a very efficient intercooler for the combo.

 

[igotyofire]

Isn't the KB charger supposed to create less heat than other superchargers?

i think your wrong on this. maybe less heat then a roots type but i dont think a supercharger sitting right ontop of the block with instantanous boost is going to run cooler then a setup with a centrifugal which to my knowledge are more efficient provided by the bigger hp gains people see with them

 

[Pokageek]

i think your wrong on this. maybe less heat then a roots type but i dont think a supercharger sitting right ontop of the block with instantanous boost is going to run cooler then a setup with a centrifugal which to my knowledge are more efficient provided by the bigger hp gains people see with them

KB claims to be 80-85% cooler.

 

[Don 95Vert]

Thanks Grady!! At my age I sometimes forget how to get home....

Actually, running a KB with a high compression motor may not be a horrid idea. Look at it this way, what makes power is airflow, boost is just a number, a measure of pressure at the intake valve - with a 10:1 motor you already have good airflow and are getting closer to 100% volumetric efficiency than a stock CR motor. Now with ANY blower you will have to run less boost with higher CR, but that's not necessarily a bad thing in your case. With less boost you'll create less heat - the aircharge temps will be far lower at 4-6# of boost than they would be at >8#. And without any IC available for 5.0 KBs that's a really good thing. You just have to be really careful, get a good tune and not get carried away with it.

Here's a good example. The '07 GTs have a CR of 9.8:1 - so the blowers for most of the 3v motors start out at lower boost. We tuned an '06 GT last year with a Saleen twin screw at only 4# of boost and it made 397 RWHP. Your results may vary because the 3v is a pretty darn efficient motor.

Hope this helps!

Don

 

[OrangeMustangGt]

how about a turbo with an intercooler......?

 

[Pokageek]

Thanks Don. This is very helpful.

 

[SVT3183]

the only kit available w/ an intercooler i know of is the paxton. i think you could fab a custom setup for other blowers but it would take a good amount of work. kb's do NOT run cooler

 

[Daggar]

i think your wrong on this. maybe less heat then a roots type but i dont think a supercharger sitting right ontop of the block with instantanous boost is going to run cooler then a setup with a centrifugal which to my knowledge are more efficient provided by the bigger hp gains people see with them

Actually, he's correct although I don't think it's as much as 80%. IIRC, it more along the lines of 30 - 35% cooler. Efficiency is measured in number of different ways when referring to power adders. Centrifugals tend to be more HP efficient at the top of its range. Thermal efficiency however, is a different story. Twin screws are very thermally efficient within their designed spin and boost range. Much more efficient than centrifugals.

A twin screw makes its largest amount of heat at idle when the by-passed air is being routed back into the blower inlet. When actually providing boost to the motor (by-pass closed), they are VERY efficient and run considerably cooler than a centri does on the same combo making similar power.

BTW: ATI centri kits have air to air aftercoolers and Vortec has an air to water you cooler that you can order and install additionally.

 

[Pokageek]

OOps I meant they claim 80-85 degrees cooler not percent. My bad.

 

[reddy351]

I think the point that Don was trying to make is that at the pressure (boost level) that would be recommended by this engine combo and the KB (2-4 psi) the KB would generate almost NO increase in air charge temps. Compressing air is what generates heat, not (to any degree) the unit compressing it. With only 2-4 psi, the air would not be compressed enough to generate a bunch of heat. My question would be whether or not the gain would be enough to warrant the expense/effort.

As far as the "cost" and "availability" of methanol for injection, consider that windsheild washer fluid has an almost perfect ratio of alcohol (methanol) and water to be used as a "charge cooler" for a boosted application. $1.29 a gallon at almost ANY gas station.

 

[Don 95Vert]

Correct.

When I said no IC, I meant Kenne Bell blowers. Any centrifugal can be set up with one of you can weld pipes.

Be careful with washer fluid - especially in winter, some contain glycol which will will not be good. Check the ingredients.

 

[qballenko]

There is this little company that provide intercooled superchargers for 5.0s. There called ATI Pro-Charger maybe you have heard of them? Half their kits come with 2 cores some come with three cores. Heres the link http://www.procharger.com/FORD/ford_auto.shtml

Personal I have no idea why these superchargers are constantly overlooked by the stang community.