94 s1 s/c 3800 performance - Page 3 - 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 10-15-2007, 01:26 PM   #21
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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.

edit: and also, I'm not looking forward to figuring out what cam profile to tell a cam company to make. I know the basics about cams and what to avoid in boosted applications, but not enough to tell them exactly what I need :(

Will I need to know all the *'* BTDC for where the lobe starts and all that good stuff? Also, how much info on s1performance.com'* cams can I take to heart, will they be a good reference?
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Old 10-15-2007, 01:59 PM   #22
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S1performance dosen't make, specify (or sell) cams.

The cams you see there are from www.crowcams.com

Austrailian Holdens. Note that the Aussies never got the S1 L67, so the cams you'll be looking at are the Series 2 (yes, that'* right) L27 cams. Not optimized for blowers.

Our Series 2 is their Ecotec.
Our Series 1 is their Series 2.
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Old 10-15-2007, 04:02 PM   #23
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What about headers for these engines? Does anyone make them?
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Old 10-15-2007, 04:11 PM   #24
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No. And you don't really need them. The S1 manifolds are the best-flowing OEM GM exhaust manifolds produced to date. The flow more freely than S2 ported manifolds.

Nor do you need to port them (unless you severely chop/port/mutilate your cylinder head exhaust ports).

You WILL need to repair the cracks. Micro-cracks can hardly be seen, but I assure you that they are there.
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Old 10-15-2007, 04:51 PM   #25
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Quote:
Originally Posted by JamesCurtis
What about headers for these engines? Does anyone make them?
You got an answer in this thread.
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Old 10-15-2007, 07:55 PM   #26
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thanks 95na, I can't believe I didn't remember posting that in a different section! I posted that and almost immediately forgot about the post. I'm hoping to keep all of my posts inside this thread so that we don't run into this problem again.

On a side note - I just got off the phone with compcams and really enjoyed talking with the person I got ahold of. He was very helpful and explained that all they needed would be a *detailed* description of the application and they could come up with some suggestions ranging from mild to wild. This car will not be a daily driver so I will be putting a slightly wild cam in it. By the way, what do you guys suggest for a pulley size in this application. I will need to know what psi to expect so that compcams can design around the amount of boost I will be running.

Here are the images I promised you. Rest assured this engine will be put back together in a clean environment.

Yuuuck...
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the state of the spark plugs (ms paint skillz)
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It looks like I may have a buddy
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6-4-2 in that order


Lots of carbon buildup on exhaust manifold
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Oil Galley, I don't think it looks toooo bad.
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5-3-1, a pretty good view of the rust
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The worst cylinder
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Both heads off
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6-4-2
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Thanks again for the help guys
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Old 10-15-2007, 11:33 PM   #27
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How long was that motor sitting? I sure hope the cyl walls can be fixed up..
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Old 10-15-2007, 11:41 PM   #28
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That thing is just nasty. Personally, I'd ditch it and find a better candidate. Sad looking proud old motor there.
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Old 10-16-2007, 12:42 AM   #29
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why ditch it when you can rebuild it and know it was done right. well at least only have yourself to blame if something should go wrong. if all works you could gain a few horsepower.
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Old 10-16-2007, 01:19 PM   #30
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Hey will, I saw that you have done some research on throttle bodies between the different 3800 models/series. Would a northstar throttle body conversion work and/or help the flow on this engine? And if so how hard would it be to make an adapter and work with the inlet to get it to work?
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