95sohc-94dohc swap (a lil confused!!!)

onemoresaturn · 04-03-2008, 05:32 AM

hello all,

i had a nice fully loaded 94 twincam/auto trans got T-boned

got a 95 single cam/man trans (cheap ,good body )drove awile ,head cracked

now i plan to put the 94 dohc engine into the 95 SOHC/manual trans car mated to the manual trans.

now just what all do i need to do/get to pull this swap off?

onemoresaturn · 04-03-2008, 02:35 PM

yeh i know guys this sohc - dohc swap subject has been beet to death but i need info on this particular swap

RC1488 · 04-03-2008, 04:56 PM

You need an EGR adapter. You can get it from the dealer or from a member LowSaturn. the '94 uses a vacum egr while the '95 uses an electric one.

You also need a Man DOHC '95 PCM. Your '95 PCM wont work as its for a SOHC engine. Your '94 PCM wont work as its for a DOHC Automatic and not a manual and will give you errors codes and wont pass inspection bc the SES light will be on. Junk yard is the best place to find this.

Other than that, its all plug and play. You have all the parts so it should be quite easy.

onemoresaturn · 04-05-2008, 02:29 AM

thanks....got all the parts on the way.

but how does the dohc man pcm(perf man) work w the dohc mated to the base man trans

i meen is there any posiable problems?

sorry for all the dumb ?

grass roots perf guy here

65 mustang 289 hipo EB performer intake /4bbl Holly double pumper /shelby headers hopfully soon to get 5sp gearbox 9"or dana44 rear and a body kit
83 eagle SX4 w 258 I6 w 4.0 ho head and mpfi /t-4 /hurst shifter
82 full size jeep w/t chearokee 360ht AMC not chrysler built to pull /727 dana 44s front and back /33x14 buckshot maxis mudder IIs on 15"steels ect

RC1488 · 04-05-2008, 09:21 PM

The man PCM doesnt care about the tranny at all. Actually if you look at the transmission there are only 2 sensor, the VSS and the Reverse sensor on top of the shift tower. Other than that the PCM doesnt see anything from the tranny.

The only possible problems with having a MP2 tranny with a DOHC car is the cruise control (if equipped) May be off. You'll have to see. Your DOHC will be running at much lower rpms than if it had the MP3 tranny on it. Thats really the only difference.

onemoresaturn · 04-10-2008, 03:39 AM

OK go the pcm and um...... the harness wont plug in it?

harness ends are pink and the pcm has blue plug holes.

am i supposed to modify the harness ends(trim the plastic) to fit the holes in the PCM?

or do i got the wrong pcm?

RC1488 · 04-10-2008, 04:33 AM

You need a '95 Man DOHC PCM. Since they are from the same year and are both manual the engine harness' are the same and there for should just plug in. I suspect you got the wrong PCM.

onemoresaturn · 04-10-2008, 02:54 PM

idk i purchased it online and the part is a perf/man on the factory lable
the part tag says 95 saturn however they could have made a mistak or

it does not have the original harness?

guess ill have to check into it

RC1488 · 04-10-2008, 10:07 PM

If they say thats the right part then the only thing I can think of is that a '95 the SOHC harness is different than a '95 DOHC harness. However I cant picture this being true.