TBIThrottle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.
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Ok guys got a set of nice chrome valve covers thanks to a fellow tbi'er i believe he's irockid85 or something on here. He hooked me up for a wicked deal but looking at em the stock covers have the oil fill on the drivers side rear of the cover and pcv on the drivers side front. The passenger has the breather hole on the rear. For the chromers to work the pcv would have to be on teh back and the oil fill on the front same as the pass side with the breatehr on the front instead of the back. Confused anyone yet?? The holes will be backwards from stock. I dont think there would be a problem but is it alright to just extend the pcv hose a little and run with the oil fill up front and then have the breather on the front instead of back. Stupid question i think i know the answer but want to make sure of it.
Heres where my holes are currently as i take everyones are
__________________ 91 Camaro-Gone but never forgotten
06 Ram 2500-687hp/1468ftlbs
06 Hayabusa stretched and slammed
91 S10 cummins powered pro street in the works
I have valve covers from a Vortec truck, and the oil filler is in the front of the drivers side, instead of rear. I simply relocated the PCV to the passenger side, where it sits up front as well. The rear of the drivers side is for the breather now.
TBI & TPI Camaros & Vettes use valve covers with the breather hole on the left, while '90 TPI Camaros, Firebirds and TBI Trucks use valve covers with the breather hole on the right. Just a bit of info there. But you can mix & match you'll just have to do some hose routing for your PCV system. When you use longer hoses with the wrong valve covers just be sure to use some gasoline or good thick grade hose so it don't suck together.
__________________ '91 Camaro RS 305 TBI TH700R4 NOW TOTALED OUT
Moroso Air Filter, 4-Wire Heated O2 sensor, MSD GM Blaster Coil, Holley Blue Fuel Pump with Moroso Upgraded Spring, LT1 cam, BBK Underdrive Pulleys, Energy Suspension Tranny Mount, B&M Downshift Kit, B&M Transpak, B&M Drain Plug Kit, B&M Trick Shift fluid, Moroso 20lb radiator cap, Milodon 160* thermostat, Edelbrock Victor Water Pump,
Earl's Hyperfirm Stainless Brake lines,
Summit 1900 Stall Converter,
B&M Flexplate, AC Rapid Fire plugs,
Flowmaster Cat-Back Exhaust, Jet Fan Switch, 40-Below Water Weter,
Ultimate TBI mods, Tuning by TBIChips.com, Spoon Performance sway bar set, Removed EGR,
Removed Cat. Conv., Removed Smog Pump
__________________ 91 Camaro-Gone but never forgotten
06 Ram 2500-687hp/1468ftlbs
06 Hayabusa stretched and slammed
91 S10 cummins powered pro street in the works
I always hated the oil filler on the rear. It makes it such a pain when you are changing it. FYI, I think 91-92 Z28 valve covers have the filler in the front and the pcv in the back. I am thinking of buying a set of those to keep the stock look while making it a lot easier to change the oil.
Hmm...I'm not sure about that. I have a '90 and to my knoledge the 91&92 look just like mine. My PCV is on the driverside closest to the nose, and the breather on the back of the passenger...
Then again don't listen to me I probly just totally missed the main question...
Bruce (90RS305)
__________________ "The INFAMOUS Bruce" Gun-Metal Grey 1990 Camaro RS L03' 305 TBI 5 speed One Of Only 2,787 Produced!! --1/4mile = 15.3 @ 87.00mph--
Only '90 TPI Camaro's , Firebirds and TBI Trucks have thefiller up frount. All TBI Camaros are the same with the filler in the rear just like yours 90RS305.
Originally posted by chevypower Only '90 TPI Camaro's , Firebirds and TBI Trucks have thefiller up frount. All TBI Camaros are the same with the filler in the rear just like yours 90RS305.
Correct. My 90 is the same as both my buddeis '91 and '92 cars.
The 91-92 Z28, aka tpi, valve covers have the filler towards the front. Late 92 cars even got black valve covers just like ours, but with the hole towards the front.
Here is a pic of a stock 1992 Camaro Z28 engine bay, with the 5 speed 305 tpi. If you look close you will notice the filler towards the front. This may have only came on the 350 autos and 305 5 speed cars though.
