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

IROCZman15 · 03-14-2021, 05:42 PM

had the car out a few times over the past few weeks, but today I did a bit of a longer drive and put 30 miles on it to check some things in the tune and datalog. Also, finally got the car up to "higher speeds" and there is no noticeable driveline vibration or noise with speeds in excess of 100 mph, so I think the gear project is a success. The car does pull well in all gears now when compared to how it was with the 3.55 gears.

Planning on doing the electric vacuum pump setup for the brake booster. Then I can run my fixed orifice PVC valve to the big vacuum opening on the sniper and cleanup the hoses back there. I keep in touch with a few other car buddies and some racers/street guys who do recommend an electric vacuum pump. There are a few complete kits I've seen, and a few options where I could buy the pump, buy the relay, and buy the pressure switch.

One of the better pump options that is more affordable is the GM pump that came on new gen Impalas and malibus. GM part # UP28. I have found them as low as $60 online, but here is a link to an AC Delco version of the pump. https://www.amazon.com/ACDelco-20804...Y05ZQ5759P4CVB I would wire up a relay so the pump would turn on when the engine is on (not key on), and I would also want the setup that has an in-line sensor which will turn the pump(relay) on/off when the vacuum is within the proper range. Generally this vacuum range is 18-22", . I have read mixed reviews about various sensors, and some sensors are not adjustable, while some are, but later become faulty? Here is what I am talking about: https://www.amazon.com/Superior-K058...ct_top?ie=UTF8 or this one (yes it says psi, but those psi numbers are in range for inches of mercury vacuum) https://www.radwell.com/Shop?source=...gleId=39137025

here are a few pumps, and also a few kits. Everything has most good reviews and some bad reviews. The top of my budget for this project is $250 done and done. The Leeds $400 pump setup is just too far out of my budget despite how people seem to love it.

- https://www.speedwaymotors.com/The-R...ump,50355.html

- https://www.jegs.com/i/JEGS+Performa...63016/10002/-1

- https://www.jegs.com/i/JEGS+Performa...2/-1#reviewTab

- https://www.ebay.com/itm/39302794007...xoCnSwQAvD_BwE

- https://www.amazon.com/ACDelco-20804...Y05ZQ5759P4CVB

- https://www.amazon.com/ACDelco-20939..._t2_B075JYWCBJ

- https://www.amazon.com/Auxiliary-Ele...ct_top?ie=UTF8

- https://www.amazon.com/Booster-Vacuu...ct_top?ie=UTF8

- https://www.summitracing.com/parts/sum-760152

aside from that, with Island opening up in a few weeks, I will start looking to get the tune stuff worked out. The car feels a few tenths quicker and that is with these street tires spinning on cold roads.

03-14-2021, 05:42 PM	#263
IROCZman15 10 Second Club / Meet Coordinator Join Date: Dec 2004 Location: Roxbury, NJ Posts: 2,101 iTrader: (8)	had the car out a few times over the past few weeks, but today I did a bit of a longer drive and put 30 miles on it to check some things in the tune and datalog. Also, finally got the car up to "higher speeds" and there is no noticeable driveline vibration or noise with speeds in excess of 100 mph, so I think the gear project is a success. The car does pull well in all gears now when compared to how it was with the 3.55 gears. Planning on doing the electric vacuum pump setup for the brake booster. Then I can run my fixed orifice PVC valve to the big vacuum opening on the sniper and cleanup the hoses back there. I keep in touch with a few other car buddies and some racers/street guys who do recommend an electric vacuum pump. There are a few complete kits I've seen, and a few options where I could buy the pump, buy the relay, and buy the pressure switch. One of the better pump options that is more affordable is the GM pump that came on new gen Impalas and malibus. GM part # UP28. I have found them as low as $60 online, but here is a link to an AC Delco version of the pump. https://www.amazon.com/ACDelco-20804...Y05ZQ5759P4CVB I would wire up a relay so the pump would turn on when the engine is on (not key on), and I would also want the setup that has an in-line sensor which will turn the pump(relay) on/off when the vacuum is within the proper range. Generally this vacuum range is 18-22", . I have read mixed reviews about various sensors, and some sensors are not adjustable, while some are, but later become faulty? Here is what I am talking about: https://www.amazon.com/Superior-K058...ct_top?ie=UTF8 or this one (yes it says psi, but those psi numbers are in range for inches of mercury vacuum) https://www.radwell.com/Shop?source=...gleId=39137025 here are a few pumps, and also a few kits. Everything has most good reviews and some bad reviews. The top of my budget for this project is $250 done and done. The Leeds $400 pump setup is just too far out of my budget despite how people seem to love it. - https://www.speedwaymotors.com/The-R...ump,50355.html - https://www.jegs.com/i/JEGS+Performa...63016/10002/-1 - https://www.jegs.com/i/JEGS+Performa...2/-1#reviewTab - https://www.ebay.com/itm/39302794007...xoCnSwQAvD_BwE - https://www.amazon.com/ACDelco-20804...Y05ZQ5759P4CVB - https://www.amazon.com/ACDelco-20939..._t2_B075JYWCBJ - https://www.amazon.com/Auxiliary-Ele...ct_top?ie=UTF8 - https://www.amazon.com/Booster-Vacuu...ct_top?ie=UTF8 - https://www.summitracing.com/parts/sum-760152 aside from that, with Island opening up in a few weeks, I will start looking to get the tune stuff worked out. The car feels a few tenths quicker and that is with these street tires spinning on cold roads. __________________ 1987 IROC-Z - modified Last edited by IROCZman15; 03-14-2021 at 06:04 PM.