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kudude · **Carb'd 2.2**

I have an 85 Charger with a 2.2 w/a 4speed. It is an ITB road racer and I would like to know how to figure out whether the car has an HO motor or not and what are the horse power differences between the regular and HO. Thanks for your help in advance.

AL,

vntned · 09-05-2006, 09:40 AM

The HO 2.2s were only in the charger in '83 and '84 and mostly in just the Shelby Chargers although a few were in the Charger 2.2s. The HOs were only available w/ the close ratio 5spd trans w/ a 3.85 gear ratio, came with a chrome valve cover, different cam and cam sprocket(110degree centerline instead of 106), milled block to up compression to 9.6:1 from 9:1, knock sensor, reprogrammed spark computer for advanced spark curve, and larger jets in the holley carb. HP was 107 in '83 for the HO, it went up to 110hp in '84 due to a different cam. The stock 2.2s were around 96hp!

vntned · 09-05-2006, 09:52 AM

The HO 2.2s were only in the charger in '83 and '84 and mostly in just the Shelby Chargers although a few were in the Charger 2.2s. The HOs were only available w/ the close ratio 5spd trans w/ a 3.85 gear ratio, came with a chrome valve cover, different cam and cam sprocket(110degree centerline instead of 106), milled block to up compression to 9.6:1 from 9:1, knock sensor, reprogrammed spark computer for advanced spark curve, and larger jets in the holley carb. HP was 107 in '83 for the HO, it went up to 110hp in '84 due to a different cam. The stock 2.2s were around 96hp!

allmotor · 09-05-2006, 12:03 PM

Quote:

Originally Posted by vntned

The HO 2.2s were only in the charger in '83 and '84 and mostly in just the Shelby Chargers although a few were in the Charger 2.2s. The HOs were only available w/ the close ratio 5spd trans w/ a 3.85 gear ratio, came with a chrome valve cover, different cam and cam sprocket(110degree centerline instead of 106), milled block to up compression to 9.6:1 from 9:1, knock sensor, reprogrammed spark computer for advanced spark curve, and larger jets in the holley carb. HP was 107 in '83 for the HO, it went up to 110hp in '84 due to a different cam. The stock 2.2s were around 96hp!

3.87 gear ratio 525 trans. block would be decked .030 for it to be an HO engine.

vntned · 09-05-2006, 12:09 PM

Damn! You always make me look stupid! I knew I shoulda just waited for you to give all the specs allmotor. Oh well I tried.

allmotor · 09-05-2006, 12:18 PM

just stating the facts as I know them. don't put yourself down, you just don't have as much background knowledge. good try

kudude · 09-05-2006, 01:07 PM

Well any suggestions on how to get the most out of this thing for ITB?

Already has a webber carb and a header.......would removing the mechanical fuel pump help any?

allmotor · 09-05-2006, 01:23 PM

no to the pump, won't make no better power. mill the head, get a cam, bigger valve head, stroker crank, use mechanical advance distributor, get rid of stock electronic ignition.

dcoe4me · 09-05-2006, 03:31 PM

Quote:

Originally Posted by allmotor

no to the pump, won't make no better power. mill the head, get a cam, bigger valve head, stroker crank, use mechanical advance distributor, get rid of stock electronic ignition.

Remember, he's in ITB. It's been a few years since I raced in ITB with my Charger and all I did were hillclimbs and no road racing, but we both use the same rule book. If I remember correctly, you can only raise compression .5 point, must use stock cam, must use stock size valves, stock stroke. So all of the above would be great on the street, but not legal in ITB. You can port match 1" into the intake/exhaust and head. I believe the distributor could be changed to something like a Mallory Unilite, but check the rules first.

I know the Chargers were in ITB and the Shelby/GLH's were in ITA. Is it still that way or have the classes been lumped together? Technically, you would only be able to raise the .5 compression point from what your car had stock, not from what the Shelby's had. Double check your SCCA rulebook to be sure. Like I said, it's been a few years.

22dodge · 09-05-2006, 08:51 PM

there's no way your 2.2 charger could even compete against a W-41 quad 4. out of the box un-molested we were running 195hp. a little massaging within the rules and a chip 220hp was easy. when they check cam are they only looking at lift or are they measureing duration as well. I know in circle track racing, I'd skirt the rules on cam lift and have custom cams made for duration, overlap and lobe center. one are that will really help with power and is within the rules is to unshroud the valves. basically it's cutting material from behind the valve seat (aka bowl hogging, pocket porting) when I do a 3 angle valve job, in used an 80° cutter and took a lot of material out between the seat and guide. this really helped with head breathing and the within the rules where no porting or polishing was allowed. the intake and exhaust runners remained stock and untouched.

XxhorizonxX · 09-06-2006, 07:54 AM

yeah the w-41's rock.....i just picked up a w41 olds calais last night..... that thing flies! even box stock

kudude · 09-06-2006, 08:50 AM

Well it already has an MSD ignition and the guts of a Mallory Distributor have been put inside the stock distributor. Sounds like the guy that owned it before me knew what he was doing. I don't think the 4 speed will hurt me any for the track I will be racing at.

The Shelby/GLH are only in ITA, the reason for that is apparently the Charger makes too much horsepower and SCCA won't bump it down to ITC.

Vanquizor · 09-07-2006, 06:34 PM

along the fuel pump lines going to an electronic pump vs mechanical may be a good investment even though driving the pump may not really cost all that much in power. I've had issues with mech pumps failing prematurely on our omni... I suspect it was because of sustained high rpms. A switch to an electric pump with adj reg. may be a good investment from a reliability standpoint.

RacerBill · **ITA vs ITB**

DCOE4me:

Yes, the IT classes for Chargers are still the same - ITA for the 83/84 Shelby, and ITB for the 2.2 Chargers. I have a Shelby and been on the track 3 times since starting the rebuild. Fun car! Not as much understeer as I imagined. And at two out of the three weekends, I have had people come over to look at the car.

dcoe4me · 09-18-2006, 01:34 PM

Bill-Do you have any pics you can share with us? What region did the car previously race in?