intake

  1. 19971997

    5.7L spider injectior assb cleaning?

    I've had this 97 CPFi unit for a while now unassembled. My question is, is it feasible to go about cleaning the spider unit? All but one injection port is cleanish looking. Cylinder #5 port is covered in soot or burnt up ethanol gunk or the other.. Would soaking the injector tips in a product...
  2. T

    Increase power and get better performance.

    Ive got a 91 350 with the TBI. Ive got a Holley 650 carb that im going to use to replace the TBI unit. Any suggestions on a intake and a cam/lifters? I want it to sound good and boost the performance. Truck still has the TBI heads but i plan on getting a set of vortec heads and some headers in...
  3. H

    AC compressor brace bars: Are they needed?

    I am installing a new intake on my stock Chevy 350 TBI engine, as the old intake is in bad shape. My new intake doesn't really have a provision for the AC brace that goes straight across the old intake, front to back. I am still able to use the one on the driver side, but I'm wondering if it's...
  4. H

    86 and below intake manifold swap onto a Chevy 350 TBI

    I got an older Holley intake manifold that typically can only be used on a pre-87 Chevy 350. I want to install it onto my Chevy 350 TBI engine which will require the holes to be drilled. How do I drill out the holes correctly? And no, replacing this intake with a proper one is not on the table...
  5. W

    What is this for?

    There is a small square piece of plastic holding this flap open in my intake. I’m assuming this was put there by the previous owner to keep it open. It has the heat riser still attached so maybe the flap doesn’t open when it gets warm? Is there a way to remove the flap rather than prop it open...
  6. 19971997

    Why do i smell gas?

    I can (along with others) smell gas strongly after turning my truck on. Doesnt happen right away but if i drive a little whiles we can smell it once it parked or shortly after started. Ive checked for leaks or drips around the tank and anywhere it doesnt leak anything. I do see a wet spot where...
  7. chris2323

    Increasing Fuel Pressure on Spider Injectors

    Does anyone have any experience increasing fuel pressure on the spider injectors? Its my understanding that there is a torx adjustment screw on the fuel pressure regulator. Some people have said they were able to increase pressure up to 70psi. Currently seeing over 100% injector duty cycle at...
  8. McSweeney

    Possible vacuum leak not sure need help

    So i have a 97 305 vortec that I replaced spider injectors on and i never bothered to check the intake manifold pressure prior to install. So after i checked it with one of those fixd scanners and map is reading 4psi at idle which from my experience is way too low. Replaced map and nothing...
  9. M

    EGR help

    I just recently put a new to me engine out of a 78 corvette into my 88 C1500. Truck has shorty headers no cats and dual exhaust with glasspacks and is running the original TBI setup from the factory. My intake had been modified to fit the engine that was in it last which I believe was out of an...

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