Tuned port injection good or bad
i have 87 iroc with the tpi 305 and auto with 3.23 rear gears. i was wondering why they droped the tpi set up for tbi
alsio, i have not even had my car out for a spin yet since i got it and everyone says these 305 are dogs but then someone says they are good and yes i would rather have a 350 and 3.73 gears but i don't and i won't be changing anything unless they they become unrepairable, as my car is all original except the stereo. is my car going to be able to put its tail lights in front of mustang? |
The TPI setup stayed around, it wasn't dropped. The 305 TBI was available but the top dog motors were the LB9 305 TPI and the L98 350 TPI.
Judged within the context of its time, the TPI was a good setup. Nowadays the LTx and LSx series of motors have surpassed and then some the capabilities of the TPI. That being said, a TPI motor has a unique look and feel. As far as performance... well, thirdgens are all over the place. Option one right and you have a mid to low 14-second car (good for the 87-92 era). Make one or two mistakes on the option block and that car could drop to a mid 15-second car. A lot of people checked the motor box and forgot to check the appropriate gears or suspension to go with it. It's not as easy as the fifthgen where you can say, "Give me the SS," and you have about all the speed you can get. |
Good low end, but it runs out of steam at higher RPMS. Former Formula 350 owner here.
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ok, so i know i have the LB9 motor is there anyway to find out what cam it has without opening the motor?
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thanks, i am really looking forward to my second and third ride in it, as the first ride will a little timid to get a feel for it before i start driving it like it was meant to be driven
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Probably won't show many fox or better mustangs the tail lights unless its an 8th mile maybe, but they have enough grunt to be fun to drive.
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I WILL HAVE FUN WITH IT FOR SURE, I REALLY WANTED IT FOR ITS RAIL LIKE HANDELING ANYWAY
THANKS |
It also depended on what year it was,They changed cam specs from year to year.
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The old TPI polished up in my opinion is the best looking intake ever... and most of the technology is still in the new LS* motors, just redesigned with newer technology.
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The TPI setups can be a little tempermental, but all in all, still a desirable setup.
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