[Shotimes] How to get 300HP from your 3.0L SHO engine

[Don Donelson]

carl

My first bad boy motor .. naturally aspirated with everything on it including high compression ... was dynoed at 245-250 at the wheels .. 

Since than .. Phil S bought the car and found some issues with the wiring harness ... ie o2  sensors ... not reading correctly .. which makes sense .. since i had ted b at the tuning session .. and every change he made to the a/f ratio ... didnt make alot of difference.

Also ... there were some injectors .. that were sucking air too ... so properly tuned .. I think that car could have been as high as 250 to 260 hp at the wheels.

dond 

---------- Original Message ----------------------------------
From: "Carl Prochilo" <gr8sho@prochilo.myserver.org>
Reply-To: gr8sho@adelphia.net
Date:  Thu, 21 Oct 2004 12:20:55 -0400 (Eastern Daylight Time)

>You'd have to get about 250HP to the wheels (assuming 17% loss due to the
>MTX-IV) to make 300HP at the crank.  You cannot statically add individual
>mods and expect the interaction of them to sum like that.  If someone has
>built a car like this and has proof via a Dynojet graph, I'd like to see
>it and the list of mods.
>-- 
>Cheers,
>Carl Prochilo
>92 Ultra Red Crimson
>
>On Thu, October 21, 2004 11:47 am, cmichaelo@optonline.net said:
>> OK this is always fun.  How much HP do we get from each mod in a 3.0L
>> engine? (This of course precludes adding displacement....:)
>>
>> What so fun about this is that it quite easy to increase the HP of this
>> engine without affecting the cars usefulness as a daily driver and also
>> without taking an equity loan on your house. You can probably do the below
>> modifications for ~$5000 + labor.
>>
>> The HP numbers below are estimated based on the assumption that all
>> modifications are initially installed in the car (thus producing 300HP).
>> Then I take one modification away and "estimate" the HP drop.
>>
>>                                                Subtotal
>> Base setup:        220HP
>>                                                    220HP
>> Rotating mass (external):
>> UDP:                     5HP
>> 8lbs flywheel          2HP
>>                                                    227HP
>> Exhaust:
>> HiFlow Y-pipe:       10HP
>> 2 1/2" catback:        5HP
>>                                                    242HP
>> Intake:
>> 77mmMAF + CAI +
>> 69mmTB:              12HP
>> BBB + EH +
>> porting:                 15HP
>> +20 CAMs:           15HP
>>                                                    284HP
>> Electronics:
>> WideBand HEGO +
>> Tweecer:               15HP
>>                                                    299HP
>> Lubrication:
>> Amsoil 5W30:         1HP
>>                                                    300HP
>>
>> There are other things one can do, but that will affect the usability of
>> the car as a family sedan, namely:
>>
>> Intake:
>> +40 CAMs            10HP (assuming a +20 base)
>>
>> Rotating mass (internal):
>> Forged crank +
>> rods + pistons:     10HP
>>                                                    320HP
>>
>> For a grand total of 320HP.
>>
>> And there are probably other tricks too, such as flipping the [forged]
>> pistons 180deg, lowering friction of all turning parts by properly coating
>> them, etc.
>>
>> What do you think the HP numbers should be???
>>
>>
>> Michael
>> 94MTX,green,BOS+,Koni/Intrax,Baer,Corbeau
>> SHO items for sale: http://hometown.aol.com/cmichaelo/for_sale.html
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