Whats the cheapest easiest perfomance mods for a L36 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-09-2005, 07:24 AM   #1
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Default Whats the cheapest easiest perfomance mods for a L36

I have a 1995 bonnie se series II 3800 and was wondering what are the cheapest easiest mods u can do to get extra horsepower I know on ebay u can get a K+N intake setup like this http://cgi.ebay.com/ebaymotors/K-N-B...04006980QQrdZ1 for $35 plus shipping think with a high flow cat u get some hp? Also it looks like I have 3 inch exhaust from my engine to the cat and then like 2.5 inch exaust from the cat back??? Are roller rockers ez to install do they each have like different tourque specs on each one or is there a special way of doing those? Also wana high velocity TB 180 stat.... Give me some options please and some good sites with l36 performance parts thanks
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Old 10-09-2005, 01:07 PM   #2
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that intake is too short for the engine bay of a Bonne. Thay intake is made for the W body.
For a Good intake setup, Like most of us have look here http://www.bonneville.fearthepearl.c....php?page=mods towards the bottom. You have a 2.5 mandrel bent exhaust tubing
Rockers are not really hard to do but you have to know what you are doing
A HVTB really wont show any gains for you
I would get a 180* in there as your First mod
and look at www.intense-racing.com and www.zzperformance.com for the L36 parts
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Old 10-09-2005, 03:19 PM   #3
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The best bang for your buck would probably be ported exhaust manifolds for $175.
http://www.hulkspeed.com/proddetail....618927d57ace59
Your manifolds are 1995/Bonneville specific and NOT interchangeable. Trust me I found this out the hard way.
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Old 10-09-2005, 03:37 PM   #4
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Yes, those manifolds are a great cheap mod. Along with that intake and t-stat, you'll be off to a good start.
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Old 10-09-2005, 03:49 PM   #5
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Before modding be sure you do a full tune-up so the mods will add power rather than get you somewhat close performance-wise to where you would be with a tuned up bone stock car.
Tune-up should consist of:

Spark Plugs (can do NGK TR-55'* as they are a good plug for a stock or lightly modded car)
Spark Plug wires (might as well get the good ones right away -I suggest Belden Premium Blue wires from NAPA)
Fuel filter
PCV valve
clean the throttle body

Then do the 180* t-stat, CAI and start your exhaust work.

Team up the ported manifolds with rockers and this high flow cat and you will have a noticable gain in power (not supercar power, but enough to make you smile). The tuneup and these mods would probably net you another 20-25 hp, and probably a 15.5 -15.7'ish 1/4 mile.

http://cgi.ebay.com/Magnaflow-High-F...QQcmdZViewItem
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Old 10-09-2005, 06:23 PM   #6
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Quote:
Originally Posted by 1993 SLE
You have a 2.5 mandrel bent exhaust tubing
Don't know if the 95 SE is different, but my L36 Series II 95 SLE has 2-1/4 factory exhaust. I just changed the muffler a couple weeks ago...Just an FYI...
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Old 10-09-2005, 06:39 PM   #7
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Quote:
Originally Posted by rel3rd
Quote:
Originally Posted by 1993 SLE
You have a 2.5 mandrel bent exhaust tubing
Don't know if the 95 SE is different, but my L36 Series II 95 SLE has 2-1/4 factory exhaust. I just changed the muffler a couple weeks ago...Just an FYI...
its weird some L36 SE/SLE'* have the the 2.25 and some have the 2.5 and there is no rhyme or reason why you would have one or the other
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Old 10-09-2005, 06:43 PM   #8
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yes, that is weird..
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