Buy C4 Corvette Air Foil Throttle Body Booster Fits: 85 through 96 L98 LT1 LT4 Corvettes: Air Filters - Amazon.com FREE DELIVERY possible on eligible purchases. This Chevrolet L98 TPI engine has its displacement stroked to 383 cubic inches and has stealth mods installed including a new cam and an extrude honed tuned port. Oct 23, 2013 This is the final segment in a 4 part video on how to rebuild a Corvette C4 throttle body. In this video I demonstrate how to install the new idle air.
I get asked frequently if installing a larger than the stock 48mm TPI throttle body will significantly help on a corvette engine, Ill save you some reading right off if you want, yes a 58mm can potentially increase hp if your engines highly modified and your still useing a stock 48mm throttle body. But the restriction a stock 48mm throttle body represents is not as significant and the gains to be had are not that large in most cases, your intake manifold and cam selection, plus your stock heads are the major restrictions.
Those TPI throttle body air foils I frequently get asked if the throttle body air foils are worth the money? The first thing Id point out its theres several versions and some can be potentially dangerous to use, because theses small components that can come loose under rare conditions but when they occur they can damage the engine.
Snow White 1987 Full Movie more. ID suggest you avoid the types that use a bolt that screws in from the front like the black plague summit sells a 58mm throttle body, obviously youll need to verify it fits and works in your application USE THE CALCULATORS to match port size to intended rpm levels. Un Program De Mixat Melodii. But keep in mind valve lift and port flow limitations YOU REALLY NEED TOO read these RELATED linkS IF you find your throttle body is starting to wear and the throttle blade shaft binds or leaks air or the TPS sensor seems to bind, Ive had new bushings and throttle blade shafts installed in older TPI throttle bodies,the cost locally was at that time parts& labor near $170 Id never do it again, the BBK 52mm-or 58MM throttle body seems to be at least to me a better deal in every respect. Now I have had my bbk 58mm throttle body on my 383, used both on an extensively ported TPI and Holley stealth-ram intake, both as delivered and later with several custom plenum designs, and after using it id be hesitant to go back to a factory throttle body, it just seems to operate better and while it may not be a significant increase in power it looks better, it operates smoother and I'm sure it flows more air.
Came across this info while doing some research and thought I'd share. TPI Intakes and runners The following airflow tests were performed on the University of Northwestern Ohio's SuperFlow SF600 Flow Bench. All CFM values are corrected for airflow at 28 inches of water. Injector flow rates are flowed at 43.5 PSI on an injector flow bench using test fluid with same density as gasoline.
This is the final segment in a 4 part video on how to rebuild a Corvette C4 throttle body. In this video I demonstrate how to install the new idle air control valve (IACV) as well as new gaskets for the throttle body assembly.
I also discuss replacing original screws (worn down, brittle and some broken during the tear down in Part 1) with after market screws. What is not shown is how to reinstall the throttle position sensor (TPS) we removed in the first video but it's easy enough (see Part 1). For more details and info visit www.gasgearsgarage.com.