NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - Getting my new 406 SBC installed, running, and driving

IROCZman15 · 03-04-2020, 12:52 PM

WBT : I am using this timing light. https://shop.advanceautoparts.com/p/...cal&store=7681 I don't think it is a "dial back" style right? Timing/tuning is a very new topic for me so bear with me as I learn!

grazi : what value are you referring to? IAC ? I have read about adjusting throttle blades. I get the whistle when the TPS sensor reads above 30% open or so, it happened 3 times today and I saw about 30-35% on the TPS reading at that time. Unsure of the IAC value at that moment though

I have so far put 105 miles on the car/engine since saturday; almost one full tank of gas, but lots of idleing and stationary running time. Did a good 40 miles of highway today. It is definitely no slouch! It pulls hard in every gear except 4th(OD). I like it, I will check and verify timing at full advance(should be 38 deg right)? I think the sniper is learning, since throttle response and drive-ability is seeming to get better. I just want to be sure I'm not operating at a reduced capability of what the engine is capable of, thats what I meant by my previous posts... it reaching its full potential..

Last night I de-greased the underside completely. Very clean chassis now. This was because, yesterday I was sad to see a drip of oil coming form the pan/flexplate area when I pulled out of the garage. I checked, and it looks like leaking at the rear main? I am thinking this is because I do not have a PVC valve... I have seen some light smoke vapor coming from both valve cover breathers when the hood is open and engine is idling while hot. I think I have too much crankcase pressure. I will remove one breather and put in a PCV valve. Any suggestions on one that is not just a cheap-o plastic chineese component? I would like something nice, reliable, shiny, and compact. I only will be doing a PCV on the one valve cover and the other one will retain a breather. I am not in the market for expensive new valve covers yet, so we are going to try one PVC and see if ti works.
-Question, if the rear main seal is now leaking, is there a chance that it can NOT leak if I install a PCV, or is it pretty much now that the seal leaks, it will always leak? I am going to call Pat at Nyes too, but figured I would ask here.

The car is indeed fast. The engine has power, thats for sure. I hope to get it all dialed in somewhat soon, but there is a chance that if Island dragway is open for test and tune this sunday, I might go. Despite my 5 year old and worn out Nitto 555 street tires, I would hope for a mid-low 12 ? Thoughts? in full street trim.

I determined the source of the exhaust rattle. I took down the Hooker AeroChamber muffler and found that an internal pipe in the muffler broke off of its bracket inside the case. No way to remove it and no way to fix it without cutting open the whole muffler case and re-welding it. No thanks. Holley/Hooker is replacing it at reduced cost and free shipping. short video explaining what the heck I'm talking about https://www.youtube.com/watch?v=PojNWPOOwKk

I don't mind the whistle, but i want to try to adjust IAC and throttle blades if that might clear up the whistle and also maximize performance. I still might do an inexpensive Phenolic spacer, in order to reduce heat soak to the sniper ecu. Just preventative. thoughts? I have read that ONLY 4 barrel/hole spacers are suggested with the sniper. somethign liek : https://www.ebay.com/i/261328386669?...hoC7UUQAvD_BwE thoughts? I STILL have every intention of hooking up my nitrous to this engine one day. I am wondering if the above spacer will play nice with a wet nitrous plate??

My shorter trans dipstick arrives today. will install it while cleaning up the trace amount of oil at the rear seal that I can see. I really hope the seal issue can go way with a PCV system.

I am probably going to be buying/installing hood pins soon. I was doing some "testing" and at high speeds I can still see my fiberglass hood lift. I have all new hood bumpers and pads and they are adjusted as best as I can get, but I would really really hate to have the fiberglass hood lift and crack or fly open/off. I love the clean look of my hood, but I think a nice set of hood pins would be ok. I am not into the areocatch or quick latch style for this car, so something like : https://www.summitracing.com/parts/d...oaAl_lEALw_wcB with the lanyards/cables removed.

03-04-2020, 12:52 PM	#50
IROCZman15 10 Second Club / Meet Coordinator Join Date: Dec 2004 Location: Roxbury, NJ Posts: 2,101 iTrader: (8)	WBT : I am using this timing light. https://shop.advanceautoparts.com/p/...cal&store=7681 I don't think it is a "dial back" style right? Timing/tuning is a very new topic for me so bear with me as I learn! grazi : what value are you referring to? IAC ? I have read about adjusting throttle blades. I get the whistle when the TPS sensor reads above 30% open or so, it happened 3 times today and I saw about 30-35% on the TPS reading at that time. Unsure of the IAC value at that moment though I have so far put 105 miles on the car/engine since saturday; almost one full tank of gas, but lots of idleing and stationary running time. Did a good 40 miles of highway today. It is definitely no slouch! It pulls hard in every gear except 4th(OD). I like it, I will check and verify timing at full advance(should be 38 deg right)? I think the sniper is learning, since throttle response and drive-ability is seeming to get better. I just want to be sure I'm not operating at a reduced capability of what the engine is capable of, thats what I meant by my previous posts... it reaching its full potential.. Last night I de-greased the underside completely. Very clean chassis now. This was because, yesterday I was sad to see a drip of oil coming form the pan/flexplate area when I pulled out of the garage. I checked, and it looks like leaking at the rear main? I am thinking this is because I do not have a PVC valve... I have seen some light smoke vapor coming from both valve cover breathers when the hood is open and engine is idling while hot. I think I have too much crankcase pressure. I will remove one breather and put in a PCV valve. Any suggestions on one that is not just a cheap-o plastic chineese component? I would like something nice, reliable, shiny, and compact. I only will be doing a PCV on the one valve cover and the other one will retain a breather. I am not in the market for expensive new valve covers yet, so we are going to try one PVC and see if ti works. -Question, if the rear main seal is now leaking, is there a chance that it can NOT leak if I install a PCV, or is it pretty much now that the seal leaks, it will always leak? I am going to call Pat at Nyes too, but figured I would ask here. The car is indeed fast. The engine has power, thats for sure. I hope to get it all dialed in somewhat soon, but there is a chance that if Island dragway is open for test and tune this sunday, I might go. Despite my 5 year old and worn out Nitto 555 street tires, I would hope for a mid-low 12 ? Thoughts? in full street trim. I determined the source of the exhaust rattle. I took down the Hooker AeroChamber muffler and found that an internal pipe in the muffler broke off of its bracket inside the case. No way to remove it and no way to fix it without cutting open the whole muffler case and re-welding it. No thanks. Holley/Hooker is replacing it at reduced cost and free shipping. short video explaining what the heck I'm talking about https://www.youtube.com/watch?v=PojNWPOOwKk I don't mind the whistle, but i want to try to adjust IAC and throttle blades if that might clear up the whistle and also maximize performance. I still might do an inexpensive Phenolic spacer, in order to reduce heat soak to the sniper ecu. Just preventative. thoughts? I have read that ONLY 4 barrel/hole spacers are suggested with the sniper. somethign liek : https://www.ebay.com/i/261328386669?...hoC7UUQAvD_BwE thoughts? I STILL have every intention of hooking up my nitrous to this engine one day. I am wondering if the above spacer will play nice with a wet nitrous plate?? My shorter trans dipstick arrives today. will install it while cleaning up the trace amount of oil at the rear seal that I can see. I really hope the seal issue can go way with a PCV system. I am probably going to be buying/installing hood pins soon. I was doing some "testing" and at high speeds I can still see my fiberglass hood lift. I have all new hood bumpers and pads and they are adjusted as best as I can get, but I would really really hate to have the fiberglass hood lift and crack or fly open/off. I love the clean look of my hood, but I think a nice set of hood pins would be ok. I am not into the areocatch or quick latch style for this car, so something like : https://www.summitracing.com/parts/d...oaAl_lEALw_wcB with the lanyards/cables removed. __________________ 1987 IROC-Z - modified Last edited by IROCZman15; 03-04-2020 at 01:02 PM.