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post #1 of 11 Old 06-23-2017, 10:22 AM Thread Starter
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Camshafts

I broke my cam and have been looking for a new one. Are the cams in a 1988 2.2 the same for the turbo and NA? Or is the turbo it's own profile? The ones I find online are not explicit and Chrysler no longer has them.
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post #2 of 11 Old 06-23-2017, 12:17 PM
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Re: Camshafts

I did a FAQ on this topic last year:

===================
Here is what the factory parts guide has listed for cams for various [ years:

[ 1987 ]
4293 817 CAMSHAFT PACKAGE, w/Standard Journals (Except EDG Turbo
& EDR Turbo-Intercooler Engine)
Consists of:1-----Camshaft, 8-4173390 Rocker, Valve

4293 818 CAMSHAFT PACKAGE, w/.050 O/S Journals (Except EDG
Turbo & EDR Turbo-Intercooler Engine)
Consists of: 1-----Camshaft, w/.050 O/S Journals (Stamped O/S J)
8-4173390 Rocker, Valve

4293 819 CAMSHAFT PACKAGE, w/Standard Journals (w/EDG Turbo,
w/EDR Turbo-Intercooler Engine)

[ 1988 ]
4387 850 CAMSHAFT, w/Standard Journals and EDF Injection Engine
4387 850 w/Standard Journals and EDG Turbo, EDR Turbo-Intercooler
Up to 3-1-88
(Notice that in this year the TBI and turbo I and II applications use the same cam up through 3/1/1988)
4387 721 w/Standard Journals and EDG Turbo, EDR Turbo-Intercooler
After 3-1-88


[ 1989 ]
4387 850 CAMSHAFT, w/Standard Journals (Exc. EDR Turbo-Intercooler)
(Notice in this year the cam for the TBI car is the same as for last year, but the turbo cam is now different)
4387 721 w/Standard Journals (w/EDR Turbo-Intercooler)
4448 479 w/.050 O/S Journals (Exc. EDR Turbo-Intercooler)

[ 1990 ]
4387 850 CAMSHAFT, w/Standard Journals (Exc. EDR Turbo-Intercooler)
(Notice in this year the cam for the TBI car is the same as for last (89)year, and the turbo cam is also different but the same cam as it was in 89)
4387 721 w/Standard Journals (w/EDR Turbo-Intercooler)
4448 479 w/.050 O/S Journals (Exc. EDR Turbo-Intercooler)

[ 1992 ]

S/C EDF - 2.2L Eng. andard" Camshaft Package for Service.
S/C EDR - 2.2L Eng (Turbocharged-Intercooler) andard" Camshaft Package for Service.

4387 850 CAMSHAFT, w/Standard Journals
4448 479 .050 O/S Journals
(Notice that it's back to the same cam for both EFI as well as turbo cars)

So based on this information, my theory is that an 89 CSX came with cam #4387 850 which is the same cam as found in any 88 TBI car or turbo car manufactured before 3/1/1988, any 89-90 TBI car, or any 92 TBI or turbo car.

NOTE: Sorry I didn't have the parts book for 91 cars so it is not included here.

The best old cam was the 430 lift 240 duration 85' cam, but it is a slider cam, not a roller.

Then the roller cam out, with valve timing for square tooth pulleys
turbo was a 430 / 228 cam
TBI was a 430 / 238 cam

So by getting the 88 TBI you basically got the 85 turbo cam in roller form and the right valve timing. Which is an issue with adding a round tooth cam to a square tooth engine as the 4 degrees difference hurts power. With a 88 TBI cam in a later car the advance timing gives a little more power. When running big boost with stock crap like a one piece the pressure differential kills you so the TBI has made more power than the S60 at 25 PSI. If you do a plenum you can run more cam, if you are running a little mitsu run the stock roller turbo cam because of excess backpressure.

If you want to use a later TBI on a log engine get advanced timing keys or adjustable gear.

===================
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post #3 of 11 Old 06-23-2017, 12:55 PM
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Re: Camshafts

unless you are making a ton of power. or never every single HP you can tweak. just find any other roller and slap it in. you wont notice a difference.

TBI turbo. year model. stick auto. dont really matter.

Clevelite makes rollers.
you can call one of our vendors and ask them for a nice clean used cam
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post #4 of 11 Old 06-23-2017, 06:08 PM Thread Starter
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Re: Camshafts

Quote:
Originally Posted by ILIKESHELBYS View Post
I did a FAQ on this topic last year:

===================
Here is what the factory parts guide has listed for cams for various [ years:

[ 1987 ]
4293 817 CAMSHAFT PACKAGE, w/Standard Journals (Except EDG Turbo
& EDR Turbo-Intercooler Engine)
Consists of:1-----Camshaft, 8-4173390 Rocker, Valve

4293 818 CAMSHAFT PACKAGE, w/.050 O/S Journals (Except EDG
Turbo & EDR Turbo-Intercooler Engine)
Consists of: 1-----Camshaft, w/.050 O/S Journals (Stamped O/S J)
8-4173390 Rocker, Valve

4293 819 CAMSHAFT PACKAGE, w/Standard Journals (w/EDG Turbo,
w/EDR Turbo-Intercooler Engine)

[ 1988 ]
4387 850 CAMSHAFT, w/Standard Journals and EDF Injection Engine
4387 850 w/Standard Journals and EDG Turbo, EDR Turbo-Intercooler
Up to 3-1-88
(Notice that in this year the TBI and turbo I and II applications use the same cam up through 3/1/1988)
4387 721 w/Standard Journals and EDG Turbo, EDR Turbo-Intercooler
After 3-1-88


[ 1989 ]
4387 850 CAMSHAFT, w/Standard Journals (Exc. EDR Turbo-Intercooler)
(Notice in this year the cam for the TBI car is the same as for last year, but the turbo cam is now different)
4387 721 w/Standard Journals (w/EDR Turbo-Intercooler)
4448 479 w/.050 O/S Journals (Exc. EDR Turbo-Intercooler)

[ 1990 ]
4387 850 CAMSHAFT, w/Standard Journals (Exc. EDR Turbo-Intercooler)
(Notice in this year the cam for the TBI car is the same as for last (89)year, and the turbo cam is also different but the same cam as it was in 89)
4387 721 w/Standard Journals (w/EDR Turbo-Intercooler)
4448 479 w/.050 O/S Journals (Exc. EDR Turbo-Intercooler)

[ 1992 ]

S/C EDF - 2.2L Eng. andard" Camshaft Package for Service.
S/C EDR - 2.2L Eng (Turbocharged-Intercooler) andard" Camshaft Package for Service.

4387 850 CAMSHAFT, w/Standard Journals
4448 479 .050 O/S Journals
(Notice that it's back to the same cam for both EFI as well as turbo cars)

So based on this information, my theory is that an 89 CSX came with cam #4387 850 which is the same cam as found in any 88 TBI car or turbo car manufactured before 3/1/1988, any 89-90 TBI car, or any 92 TBI or turbo car.

NOTE: Sorry I didn't have the parts book for 91 cars so it is not included here.

The best old cam was the 430 lift 240 duration 85' cam, but it is a slider cam, not a roller.

Then the roller cam out, with valve timing for square tooth pulleys
turbo was a 430 / 228 cam
TBI was a 430 / 238 cam

So by getting the 88 TBI you basically got the 85 turbo cam in roller form and the right valve timing. Which is an issue with adding a round tooth cam to a square tooth engine as the 4 degrees difference hurts power. With a 88 TBI cam in a later car the advance timing gives a little more power. When running big boost with stock crap like a one piece the pressure differential kills you so the TBI has made more power than the S60 at 25 PSI. If you do a plenum you can run more cam, if you are running a little mitsu run the stock roller turbo cam because of excess backpressure.

If you want to use a later TBI on a log engine get advanced timing keys or adjustable gear.

===================
That is really great info, thanks. My car is a 2.2, 445 head, turbo 2, round tooth cam gear. My intent is to put in the '88 roller. Melling makes a new replacement (IDK their quality) but the fit listing shows pretty much everything from '83-'93.
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post #5 of 11 Old 06-23-2017, 06:11 PM Thread Starter
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Re: Camshafts

Quote:
Originally Posted by masterjr3333 View Post
unless you are making a ton of power. or never every single HP you can tweak. just find any other roller and slap it in. you wont notice a difference.

TBI turbo. year model. stick auto. dont really matter.

Clevelite makes rollers.
you can call one of our vendors and ask them for a nice clean used cam
I'm only boosting 18psi. But thanks for the Clevelite tip, it sounds like they will know exactly what I need.
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post #6 of 11 Old 06-23-2017, 07:03 PM
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Re: Camshafts

If you are going to put an 88 TBI cam on your round tooth gear set you will need/want either the cam key offset keys or an adjustable cam gear. It's mentioned above that the factory changed the cam timing between years square(early)/round(later) cam sprockets.
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post #7 of 11 Old 06-24-2017, 07:54 AM Thread Starter
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Re: Camshafts

The broken cam is a '93 roller out of a NA Sundance. The engine builder told me he programmed the advance into the EEPROM.
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post #8 of 11 Old 06-24-2017, 08:54 AM
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Re: Camshafts

cant program camshaft advancement.
its physically linked from the engine and the camshaft by the belt.

but still best thing is to contact one of our vendors. ask them for a good used roller cam.
They will know what they have. and it will be reasonable.

or if you want a new one they sell those as well.
I would ask you to support the site vendors that support this platform.

failing that. just check ebay for 88+ camshafts. or check rock auto for a cam shaft. they are a supporting vendor here
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post #9 of 11 Old 06-24-2017, 09:52 AM
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Re: Camshafts

Part number indicate it is a 88 TBI 2.2 camshaft.
Camshaft Chrysler 2.2/2.5L Roller Brand New | eBay

Get it.
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post #10 of 11 Old 07-25-2017, 06:23 AM
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Re: Camshafts

Quote:
Originally Posted by tryingbe View Post
Part number indicate it is a 88 TBI 2.2 camshaft.
Camshaft Chrysler 2.2/2.5L Roller Brand New | eBay

Get it.
Thank you Sir!!
I bought two. I just received them and they look great!
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post #11 of 11 Old 07-25-2017, 07:57 AM
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Re: Camshafts

Quote:
Originally Posted by chromguy View Post
Thank you Sir!!
I bought two. I just received them and they look great!
New in MOPAR box? Post some pictures? Details!!
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