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Iron Duke performance... NOS Edelbrock Performer Pontiac TBI intake manifold... NEW!   (The Mall - by bkaab, started: 10-15-2013, last post: 2014-08-05 15:45:21 CEST)
Well the Fiero is gone. Never got around to installing these parts I collected over the past few years mainly because my Fiero wasn't nice enough to put them on. I'll listing them as I pull them out of the basement. What I have is pretty rare. Its an Edelbrock Performer Pontiac TBI intake manifold....
Score: 1000, Size: 90 bytes

Performance Cam in a Duke... PERFORMANCE ?'s   (Archive: TD&Q - by BroCar 87, started: 09-05-2000, last post: 2001-07-06 10:40:22 CEST)
Just wondering if anyone knows how much more power or performance I can get out of using a performance cam kit from CompCams. It would go into my lil 2.5 Iron Beast. Would it be a good deal of performance or would it not even be worth gettin at all? Would I be able to tell the difference?I am...
Score: 1000, Size: 57 bytes

I created a new website to aggregate all Duke 2.5 performance data   (General Fiero Chat - by mckaymotoworks, started: 11-07-2014, last post: 2015-02-13 12:21:42 CET)
I have collected quite a few bookmarks, thought it would be handy for anyone else interested in proven modifications for the 2.5L Duke. I have given credit to all the original sources, if you prefer I pull this data down or have any other concerns, please do not hesitate to contact me. Also, to all...
Score: 775, Size: 81 bytes

My budget performance buildup for the 2.5 Duke   (Technical Discussion & Questions - by Ventura, started: 02-10-2015, last post: 2015-04-12 04:40:27 CEST)
So what exactly is the performance problem with the 2.5 and why do so many people say it's a dog? I've been thinking about that and researching the 2.5 for several years trying to wade through all of the misinformation that's out there.I realized I had to stop thinking about how I would improve on...
Score: 775, Size: 54 bytes

Serious little known Duke performance tip   (Technical Discussion & Questions - by uhlanstan, started: 05-11-2014, last post: 2014-05-14 20:36:48 CEST)
The holley model 3739 throttle body unit was introduced in 1985 as a replacement TBI unit for G.M. four cylinder owners clamoringfor more horse power.. The 3739 is single barrel model that offers more airflow than the stock unit .. when combined with a holley intake manifold & after market...
Score: 775, Size: 52 bytes

Performance Valve Springs, duke   (Archive: TD&Q - by ScotMac, started: 06-12-2009, last post: 2011-05-02 10:44:26 CEST)
Hi, looking for some performance valve springs and retainers for the duke. Anyone know a good source? I did a search, but didn't see anything.
Score: 775, Size: 41 bytes

duke performance site   (Archive: TD&Q - by uhlanstan, started: 05-23-2007, last post: 2009-02-19 10:45:35 CET)
the best performance site for the duke ,this site has information from different sources you can actually use these inexpensive modifications will give a good boost to fiero 4
Score: 775, Size: 33 bytes

Duke Performance Parts   (Archive: TD&Q - by Pontiatic, started: 12-28-2001, last post: 2002-05-11 09:53:28 CEST)
I know this has probably been discussed a billion times but i need help. I have a Duke engine, what kind of performance add-on's can I do to this engine? I went to the local speed shop and all they could get me was an air filter. Any suggestions?
Score: 775, Size: 34 bytes

duke performance T B I   (Archive: TD&Q - by uhlanstan, started: 05-26-2007, last post: 2009-02-19 10:45:32 CET)
Is there a tbi from another car,,a marine engine?? possibly a larger engine T B I that can be adapted to the duke?/ there must be one out there,has any one attempted this,, I know people have put carbs on the duke but I have not heard of any one trying a larger tbi input??
Score: 775, Size: 34 bytes

DUKE TBI best performance , orge   (Archive: TD&Q - by uhlanstan, started: 12-07-2007, last post: 2009-02-19 10:44:19 CET)
I just read the ogres T B I section" WOW", I am posting because if you have an 87,88 duke this is "required reading",I know something about engines and TBIs and I was impressed by the simplicity and readability,my post are difficult for some to follow, this is easy to understand.If you have an...
Score: 775, Size: 46 bytes

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