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Old 09-29-2007, 12:18 PM   #1
Sohc_dreamer
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Dizzy another noob question(difference between pre 95 intakes and post 95 intakes)

whats the difference between pre 95 intakes and post 95 intakes on a sohc

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Old 09-29-2007, 12:47 PM   #2
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Sohc_dreamer View Post
whats the difference between pre 95 intakes and post 95 intakes on a sohc
On a SOHC? UH, the 95+ SOHC's have the DOHC intake, and multi port fuel injection. No more POS TBI 85hp after 94.

SOHC
91-94 TBI single injector 85hp POS
95-2002 MPFI 4 injector 100hp semi-POS (still missing a cam)

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Old 09-29-2007, 12:53 PM   #3
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

ok thanx cause i was wondering if it cauld be converted for use on a 92 sl1

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Old 09-29-2007, 12:55 PM   #4
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

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whats the difference between pre 95 intakes and post 95 intakes on a sohc
Open the hood on a 1991-1994 SOHC and a 1995+, the difference will be obvious. Also no one makes an aftermarket 1991-1994 SOHC intake.

...
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Old 09-29-2007, 12:57 PM   #5
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Question Re: another noob question(difference between pre 95 intakes and post 95 intakes)

i know no body makes one thats why i was wondering if a 95 one would fit
what about transplanting a 95+ engine in to a 92 body w/transfered wireing

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Old 09-29-2007, 01:03 PM   #6
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Sohc_dreamer View Post
i know no body makes one thats why i was wondering if a 95 one would fit
what about transplanting a 95+ engine in to a 92 body w/transfered wireing
You cant swap a 1995+ SOHC into a 1991-1994 SOHC. But can swap a 1991-1992 DOHC into your 1992 SOHC.

You would need:
  • 1991-1992 complets DOHC motor (including all brackets and manifolds)
  • MP3 or MP7 transmission (depending on weather you have a manual or auto)
  • 1992 DOHC PCM
  • 1991-1992 DOHC instrument cluster
  • DOHC throttle cable
  • 1991-1994 DOHC fuel pump
  • 1991-1992 engine wiring harness
  • 1991-1992 exhaust header and downpipe

I did a very similar swap in my 1993 SW1
http://www.cardomain.com/ride/484404

...
Mike

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www.differentracing.com

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Old 09-29-2007, 01:09 PM   #7
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Question Re: another noob question(difference between pre 95 intakes and post 95 intakes)

ok that seems kinda exspensive

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Old 09-29-2007, 01:11 PM   #8
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Low Saturn View Post
You cant swap a 1995+ SOHC into a 1991-1994 SOHC. But can swap a 1991-1992 DOHC into your 1992 SOHC.

You would need:
  • 1991-1992 complete DOHC motor (including all brackets and manifolds)
  • MP3 or MP7 transmission (depending on weather you have a manual or auto)
  • 1992 DOHC PCM
  • 1991-1992 DOHC instrument cluster
  • DOHC throttle cable
  • 1991-1994 DOHC fuel pump
  • 1991-1992 engine wiring harness
  • 1991-1992 exhaust header and downpipe

I did a very similar swap in my 1993 SW1
http://www.cardomain.com/ride/484404
Sure you could swap a 95+ SOHC into a pre 95 SOHC car....just use the same procedure as the DOHC swap, but use all post 95 SOHC parts for it, right? I wouldn't do it....just saying, it has to be possible...

...
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Old 09-29-2007, 01:14 PM   #9
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Happy Re: another noob question(difference between pre 95 intakes and post 95 intakes)

ok i'm just wondering right now since i am unemployed at the moment
but when i get some money it will be a dohc swap

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Old 09-29-2007, 01:32 PM   #10
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by JADEDSL2 View Post
Sure you could swap a 95+ SOHC into a pre 95 SOHC car....just use the same procedure as the DOHC swap, but use all post 95 SOHC parts for it, right? I wouldn't do it....just saying, it has to be possible...
These only one speed bump in that plan. Depending on the year of the car, a 1991-1994 MFPI PCM would be required to run a 1995+ SOHC engine in a 1991-1994 car. A 1991-1994 MPFI SOHC PCM doesnt exist.

...
Mike

-1991 Turbo SL2.
11.809 @ 116.488 mph
www.differentracing.com

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Old 09-29-2007, 01:35 PM   #11
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Sohc_dreamer View Post
ok that seems kinda exspensive
There's a lot of inexpensive options. Depending on where you live, junkyard part prices can vary. It possible to get everything needed from $100 to well over $2000. Its also possible to just buy an entire car to get the parts you need. You can find cars that have body damage but no drivetrain damage for really cheap in craigslsit.org. I've bought entire running Saturns for $0 to $300.

...
Mike

-1991 Turbo SL2.
11.809 @ 116.488 mph
www.differentracing.com

-2000 SC2
-2001 Limited Edition SC2 (#78)
-2001 Chevrolet Suburban
-2011 Rally Yellow Chevrolet Camaro 2SS RS

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Old 09-29-2007, 01:43 PM   #12
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

ok thanx

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Old 09-29-2007, 01:57 PM   #13
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Low Saturn View Post
These only one speed bump in that plan. Depending on the year of the car, a 1991-1994 MFPI PCM would be required to run a 1995+ SOHC engine in a 1991-1994 car. A 1991-1994 MPFI SOHC PCM doesnt exist.
Of course it doesn't. but if you're dragging over a 95+ sohc engine, you'll of course need the engine harness, and of course also need the pcm. It's not a speedbump, you just have to grab a pcm from the same car as the newer engine, just like you'd have to do with a DOHC anyway.

...
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"1G8ZF5594PZ249184"-Trinity, for three are now one.

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Old 09-29-2007, 02:21 PM   #14
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by JADEDSL2 View Post
Of course it doesn't. but if you're dragging over a 95+ sohc engine, you'll of course need the engine harness, and of course also need the pcm. It's not a speedbump, you just have to grab a pcm from the same car as the newer engine, just like you'd have to do with a DOHC anyway.
The PCM has to match the recipient vehicle, not the donor. A 1995 PCM in a 1991-1994 would cause another entire headache of problems. And if an automatic transmission is involded, then you're really screwed.

When doing a DOHC swap you would need the DOHC PCM from the same year the DOHC engine is going into, not the year the DOHC came out of.

IE:
Say you have a 1993 SL1 and have a 1998 DOHC engine. You need a 1993 DOHC PCM. If you have a 1997 SW1 and a 1993 DOHC engine, you'd need a 1997 DOHC PCM.

...
Mike

-1991 Turbo SL2.
11.809 @ 116.488 mph
www.differentracing.com

-2000 SC2
-2001 Limited Edition SC2 (#78)
-2001 Chevrolet Suburban
-2011 Rally Yellow Chevrolet Camaro 2SS RS

Last edited by Low Saturn; 09-29-2007 at 02:26 PM..

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Old 09-29-2007, 03:28 PM   #15
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Low Saturn View Post
The PCM has to match the recipient vehicle, not the donor. A 1995 PCM in a 1991-1994 would cause another entire headache of problems. And if an automatic transmission is involded, then you're really screwed.

When doing a DOHC swap you would need the DOHC PCM from the same year the DOHC engine is going into, not the year the DOHC came out of.

IE:
Say you have a 1993 SL1 and have a 1998 DOHC engine. You need a 1993 DOHC PCM. If you have a 1997 SW1 and a 1993 DOHC engine, you'd need a 1997 DOHC PCM.
Yeah, I understand what you're saying, and I'm not meaning to argue with you, I know you have experience with this.

But I have a 93 SL manual base, using a 99 DOHC engine AND the 99 DOHC PCM from the car it came out of, that I drive everyday. (see my gallery) Yes, it is a major headache to do, and your method is MUCH easier, I'm just saying it's possible, that's all. I'm definitely NOT saying it's a good idea...trust me on that one!

...
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"1G8ZF5594PZ249184"-Trinity, for three are now one.

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Old 09-29-2007, 04:43 PM   #16
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by Sohc_dreamer View Post
whats the difference between pre 95 intakes and post 95 intakes on a sohc
the difference is no one makes an aftermarket performance intake for the 91-94 sohc with tbi. the 95-02 sohc mpfi can use the same part as a 91-99 dohc so you have options.

...
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Old 10-02-2007, 04:14 PM   #17
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by JADEDSL2 View Post
Yeah, I understand what you're saying, and I'm not meaning to argue with you, I know you have experience with this.

But I have a 93 SL manual base, using a 99 DOHC engine AND the 99 DOHC PCM from the car it came out of, that I drive everyday. (see my gallery) Yes, it is a major headache to do, and your method is MUCH easier, I'm just saying it's possible, that's all. I'm definitely NOT saying it's a good idea...trust me on that one!
You had to swap in a whole dash, just to drive the right cluster, IIRC, which involved some structural surgery, right?

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Old 10-02-2007, 10:34 PM   #18
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

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Originally Posted by madpogue View Post
You had to swap in a whole dash, just to drive the right cluster, IIRC, which involved some structural surgery, right?
Yeah, technically. Mechanically, it had nothing to do with anything. I swapped the whole dash so the cluster had a place to "fit" in properly. It wasn't so bad really, lots of planning, and looking, but it only took 3 minutes of "cutting" to fit it in. Wasn't that bad.

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Old 10-03-2007, 12:01 AM   #19
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Default Re: another noob question(difference between pre 95 intakes and post 95 intakes)

Quote:
Originally Posted by eRic 02sc2 View Post
the difference is no one makes an aftermarket performance intake for the 91-94 sohc with tbi. the 95-02 sohc mpfi can use the same part as a 91-99 dohc so you have options.

when i supercharged my 94 sl1 i moded a carberator intake to fit over the tbi unit. was quite simple. and it was a universal part from auto zone.
i also added a few injectors to keep up with the supercharger.
I did this is 94 before they had the mpfi set up on the sohc other wise i would have swaped the intake and harness ect.

In hind site it would have just been better to have bought a twin cam to start with.

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