PY Online Forums - Bringing the Pontiac Hobby Together - Pontiac - Boost https://forums.maxperformanceinc.com/forums/ en Tue, 21 Jul 2026 15:07:32 GMT vBulletin 60 https://forums.maxperformanceinc.com/forums/images/SultanThemeVB3R/misc/rss.jpg PY Online Forums - Bringing the Pontiac Hobby Together - Pontiac - Boost https://forums.maxperformanceinc.com/forums/ 4 cylinder Thompson blower setup https://forums.maxperformanceinc.com/forums/showthread.php?t=886141&goto=newpost Sun, 05 Jul 2026 01:26:24 GMT This is on FB Marketplace now. Tony is a great guy, always has good stuff for sale. Thought someone might be interested in it. Not easy to come by! (blower not included)

https://www.facebook.com/commerce/li...are_attachment
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]]> Pontiac - Boost misterp266 https://forums.maxperformanceinc.com/forums/showthread.php?t=886141 Timing with Boost - Carburetor Version - No Frills here... https://forums.maxperformanceinc.com/forums/showthread.php?t=886096&goto=newpost Wed, 01 Jul 2026 13:17:04 GMT I have narrowed down my timing and before I make my first pull, I thought we could discuss it here to make sure I don't mess up!

Specs: 455" at 9.5:1 static, with 84mm Torqstorm Centrifugal Supercharger and 3.1 pulley. CSU 750 e85 Carb for blow through. Aeromotive 13202 bypass regulator - boost referenced. MSD Boost Timing Master to pull timing (can pull 15° at max boost), MSD 7AL-3 Box has other timing functions if needed.

The Blower is capable of 20+ psi but I figure a solid 16psi may be about it. I am starting at 34° Total Locked. I figure the BTM ill start at 1 Psi, pulling timing - let me know if I should change this. My curve should look like this (target is 19° under full boost):



I'm always going to use the recommended 1° per PSI setting on the BTM because turning the dial up 2 and 3 degrees flattens out the timing curve too early in my opinion and creates more heat in the exhaust. Im looking at these AFR's: Idle 14.0 - 14.7, Boost Transition 12.5, Moderate boost 11.5 - 11.8 and Peak Boost at 10.8 - 11.2 keeping it below danger zone of 12.0. Please recommend AFRs here on gasoline scale if you have them.

I am asking for your input, so please let me know what you all think.
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]]> Pontiac - Boost Nacs Fab https://forums.maxperformanceinc.com/forums/showthread.php?t=886096 Boost Referenced line connection points - Carb Blowthrough https://forums.maxperformanceinc.com/forums/showthread.php?t=886000&goto=newpost Wed, 24 Jun 2026 13:13:59 GMT I need to make sure I have everything hitting the correct points for boost reference. I have 4 items that receive a signal: Blow Off Valve (BOV), Aeromotive Fuel Regulator A2000, MSD Boost Timing Master (BTM) and Boost Gauge on dash. Currently I have the Regulator getting its signal from the... I need to make sure I have everything hitting the correct points for boost reference. I have 4 items that receive a signal: Blow Off Valve (BOV), Aeromotive Fuel Regulator A2000, MSD Boost Timing Master (BTM) and Boost Gauge on dash.

Currently I have the Regulator getting its signal from the Carb Hat - This is the only thing referencing there.

Currently Below Carb blades in base plate of carb is BOV, BTM and Boost Gauge ran from a single 1/4" push lock style air hoses and full size tees.

I am thinking I need to change the below carb blades to a tapped source in the intake or perhaps a 1" open spacer with a port.

Just checking with the Pro's before I step on this thing. Sounds very healthy and I dont want to hurt anything.

https://youtube.com/shorts/2O3BpAfJl...A-sn0Y59XKDinZ ]]> Pontiac - Boost Nacs Fab https://forums.maxperformanceinc.com/forums/showthread.php?t=886000