94 s1 s/c 3800 performance - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 10-25-2007, 03:03 PM   #31
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I just thought I'd update you guys. I dropped the block off at the machinist and he said that he'd have a look later this week or early next week at getting it cleaned and decked. I've also asked him to look into removing the balancing shaft to see what all needed to be done. I'm going to take the lower intake home tonight and start working on refinishing the interfaces and porting it out. I won't be doing a whole lot until I send the heads off to get ported and polished, but I will at least be cleaning it up a bit.

Will - did you port the outlet of your m62 at all?
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Old 10-25-2007, 07:35 PM   #32
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OK, triple post but this post has a completely different point than the last two posts.

After thinking about my options on my trip home from work, i've decided this. For now we're going to go with the m62, since that'* what the engine came with and we really haven't invested a whole lot into the thing other than a pulley. If we're not happy with the power from the supercharger, we'll take it off, replace the LIM with a n/a intake manifold, and look into turbo'ing it. This means I'll still have a hell of a motor after this build, and gives me an upgrade path. You might say, "Hey, why not just turbocharge that sucker now and not worry about it later." My reply will be that the turbocharger will add a lot of expense that I'm not interested in right now. If I want to get this up and running by July that means I'll have to go with the supercharger.

I don't think that as a platform the S1 is a bad idea. It was cursed with an M62 blower and heads that flow a little less, but it isn't a platform that a person can't build on. For right now lets keep the talk about a supercharger to get it up and running, but let it be known that a turbocharger will be in its future as an upgrade path. I hope you understand where I'm coming from with this.
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Old 10-25-2007, 09:10 PM   #33
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Supercharger isn't a problem with an intercooler.

Make sure you take the LIM into account when you deck the heads. (or it won't mate up right).
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Old 11-14-2007, 01:43 PM   #34
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Well I just called napa and received some good news. The machinist told me to expect up to $500, but it ended up being $317.21. This includes -

Decking the block
Line bore
Overbore .040"
Cleaning the block
Cam Bearings
Cam Bearing installation.
Vibration shaft removal

How does this price compare to what you guys normally see?

Also to note, I'll take my parts in to have them balanced after i get the rods polished
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Old 11-14-2007, 02:29 PM   #35
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Hello! Sorry to jump in so late on this. I was looking into something willwren had written on another forum and happened upon this. Strange...

This is an excellent build! Thanks for all those really cool pictures. Do you have any more to show? Please let us all know if stuff on the cam comes up. This is what I'm trying to find with Series 1 cammers (you & Will so far). When you finish this car, will you do suspension work to make it handle better with the heavy engine inside?
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Old 11-14-2007, 02:37 PM   #36
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Hey Radomir, thanks for dropping in!

I was planning on redoing the suspension pretty much completely anyways. The rear springs will be a little bit stiffer to make up for the added weight. The front will also go full tubular with adjustable coil-over shock-absorbers.

I hope to have some pictures up either tonight or tomorrow when I get the engine back on its stand. When I went by the machine shop to look at the block, I didn't think that I could be as pleased as I was to see the block back in tip top shape . Later tonight I might add a few that i left out during the disassembly, we'll see. If there are any specific pictures you'd like me to take just let me know and I'll snap them for ya.
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Old 11-14-2007, 02:48 PM   #37
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Looking good man, are you keeping the stock compression ratio?
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Old 11-14-2007, 03:59 PM   #38
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Quote:
Originally Posted by JamesCurtis
Well the weight will vary for different options and auto/manual. A safe assumption on a fiero is anywhere between 3000-3200lbs. I'm not sure on the weight of the drivetrain.
According to msn...
Curb Weights of a 1988 manual Fiero (no data for auto)
Base - 2602
Formula - 2473
GT - 2790
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Old 11-14-2007, 05:28 PM   #39
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About the curb weight, I remember seeing some people that took their fieros to scales and ended up above 3000. This was a while ago so I could definitely be drawing a blank here. The compression ratio for this engine will be bumped up just a bit by the machinist blocking the deck, but other than that there are no plans to increase the ratio. I'd like this engine to run on 91-93 octane as nicely as possible
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Old 11-15-2007, 12:46 AM   #40
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You did well on the price of your block work. Congrats! It'* nice to see people so enthusiastic and open minded about modding the S1 for a change. I will be following this topic closely.
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