The age old question, supercharging a N/A but w/ a twist - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-10-2003, 03:22 PM   #1
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Default The age old question, supercharging a N/A but w/ a twist

Ok i know this question has been asking and answer the same numerous times but after pulling info that people have found, and doing some searching on ebay, yeah i should be doing work, but oh well Anyways, heres a slight twist for series 1 motors only. The compression for series 1 n/a'* was the same for series 1 */c, therefore if u had the entire top end from a series 1 */c, dis regarding the tranny, and possible need for the computer, would this seem more reasonable to be able to do to series 1 motors. I ask because http://cgi.ebay.com/ebaymotors/ws/eB...tem=2418582294 is the entire top end of a 95 buick ultra.

Just food for thought

Michael
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Old 06-10-2003, 08:47 PM   #2
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Been there already, done my reseach on this too for the last two years.
The compression is different as the SC uses low compression pistons. The rest of your homework holds true though. I was going to do this very same thing myself, until I found a Series II complete engine for $200.00 Cdn.
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Old 06-10-2003, 09:41 PM   #3
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how did you find that, DR??? I know you are dying to tell us... Do you have any more for the same price? I know of a '98 SE with over 140k miles that could use a new motor...
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Old 06-10-2003, 11:06 PM   #4
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Drop in an entire L67. Even if you can somehow install the Eaton SC on an N/A, you're gonna tear up the inside of the engine. I know, it would rock...but reality is a bitch.
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Old 06-10-2003, 11:39 PM   #5
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Quote:
Originally Posted by macho_mike21
how did you find that, DR??? I know you are dying to tell us... Do you have any more for the same price? I know of a '98 SE with over 140k miles that could use a new motor...
I work for a GM Dealership remember? It was a Core that I bought from a wrecking yard return that we installed in the shop. Since I already knew what was wrong with this engine (bottom end knock), I decided to buy it. the donor car was a 96 Regal, but when I'm done it will be a SC'd 98 Bonneville version but with more bite than a junk yard dog! I'm keeping my Bonneville SE badging, but only the losers will know it'* not a SE after I fly by them. This engine came with everything including injectors, TB, entire PCM harness, coils & module, all sensors too. The only components missing were P/* Pump, Alternator, A/C Compressor & Starter, all of which I can use from my present Series I.
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Old 06-11-2003, 03:10 AM   #6
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On the original question.....you'll need the L67 heads as well, I believe, and the PCM and wiring harness as well. Then the trans won't hold up.

Turbo, NOS, or CSC. Those are much more economical and capable solutions for you.
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Old 06-13-2003, 10:08 PM   #7
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Think the CSC would be the best move guys.
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Old 06-15-2003, 02:18 AM   #8
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Yes, I was thinking CSC as soon as I read the first post. Don't waste your time with engine swaps (thats basically what it would be) unless you wanna get hardcore. There is a guy running 12.1'* in a CSCed Monte Carlo, and that is pretty hardcore in my opinion without a swap. Unless you want to run 11'*, which it doesn't sound like is the case, get a CSC and beef up your L27.

To change it over you will need at least the following:

L67 Heads
L67 PCM & Wiring Harness
L67 Intake Manifold
L67 Blower (obviously)
L67 Throttle Body

There are a lot of other things too, but those are some of the big items you would need. That would be high dollar, and you would still only have a Series 1 L67 (I'm not saying Series 1'* are bad, just that a series 2 would obviously make more ponies). That my friend, would be the reason to get a CSC and not mess with converting.
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Old 06-16-2003, 12:59 AM   #9
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Now i was thinking along the same lines with a CSC, how much $$ would a decent one be and could it be "turned off" or similar to save gas while not in "need-for-speed" mode? Oh and how much HP/torque are we lookin at?
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Old 06-16-2003, 09:15 PM   #10
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CSCs dont really make boost when in the low RPM range, they behave simiular to a turbo, but without the piping. If you want more info go check out:

http://www.grapeaperacing.com/GrapeA...supertypes.cfm

kudos to DrJay for the link, i took it from his post...
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