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04-30-2016
I have a Series 3 motor with Series 2 internals, Gen V, 180* stat, autolite 104 plugs, SP headers, will be buying an exhauast soon, and a ZZP PCM and having a 3800 knowledgeable friend tune it. Still not sure after a lot of research. If not, what size can I run, or what else would be needed to safely use a 3.4"
Thanks
*edit* car is an '4 Comp G and am also doing an EGR delete
04-30-2016
3.6 might be safer with the gen 5.
04-30-2016
Avoid a mail order zzp tune
3.6 for those mods, but you'll need either cam/rockers/ic/e85 can get you to a 3.4 or lower knock free with good timing
Edit: damn u scotty
04-30-2016
I'm just buying the PCM itself and getting it tuned by someone else, and for your list, is all that needed or I can pick one to be able to run the 3.4"?
04-30-2016
Yup pick one
Rockers would be the easier/cheaper out of the list if e85 isn't available
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04-30-2016
Alright cool, thanks for the help
04-30-2016
Also exhaust is not needed at that level unless your after tone of just wanna replace the thing, restrictive part is the stock bend downpipe which you'll be taking care of with headers
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04-30-2016
currently on 3.4 gen5 tog headers with 60# injectors and e85 though.
i suggest e85 because well e85allthe3800s!
lol
04-30-2016
Why not just tune the stock computer??
You don't have to buy another PCM to tune these cars.
04-30-2016
Sweet. A slammed fiero rockin a 3800 in Rochester? Awesome. Love to see it sometime
04-30-2016
That's the goal... But right now its got a stock motor and is being restored. This is all for my GTP
05-01-2016
It will all come down to the tune. Kr being the biggest issue. On my 2000 gtp I had those mods and was able to run 13.5s all day long with only one other mod and that was alky injection.(imitation I/C). Now on my 04 comp the kr was much more of a problem. I had to go a different route and now I'm tuned for a 2.9" but that all came with a much higher price tag. I am equipped to run alky on on 04 but it really doesn't do any good because I don't have any knock.
05-01-2016
Originally Posted by gtpsgofast
you must be on e85. or running no timing at all to use a 2.9 pulley kr free.
05-03-2016
On my 04 I'm running a full size inner cooler, along with a lot of other mods. I'm running fairly low timing but I can run 87oct with no problem this time of year but during the hot summer months it's only 92 Oct.
05-01-2016
I ran 3.4 with air box down pipe cat delete and 103 plugs with no problems in to different gtp I had
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05-01-2016
Good luck with that combo on a GEN 5 supercharger lol, need a junkyard on speed dial for sure.
05-01-2016
Does running gen v that much different my two cars ran that set up minus hen v for year one is still running
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05-01-2016
Gen v is a much more efficient blower. Gen v 3.6 = gen III 3.4
That's the general rule of thumb, don't get pulley happy or you'll met chip soon enough
And what works for one person doesn't mean it'll work for other people
05-01-2016
I know you said it works, but is everything still healthy.
It may run but if you were to log the data from the computer and it shows alot of knock with that pulley and minimal mods, they in reality it's not running good and just hurting power. Using 3 range cooler plugs and only a downpipe/cat delete isn't a real good way of modding. (the air box isn't even a mod that adds power, so I excluded that)
05-01-2016
I didn't realize that gen v made that much difference old cars was running gen 3
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