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What is the max boost a stock 85 motor can take without being damaged to much?
 

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Well I dont know a lot about the buicks I am learning everyday but I do know you have to have a gauge or knock detector to make sure your car has no knock, when you have this you can determine your "max boost" on both race and pump gas.
 

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So easy cavemen can do it
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typically 14-15 psi in first and second gear...it will drop after those gears

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http://www.angelfire.com/in4/d0n_3d/

1987 Buick Grand National (owner since 1997) - 80,000 miles, everyday driver (rain, sleet, hail, snow, its seen it all) engine never opened up, basic bolt on upgrades include:

Cold-air induction w/ 9" K&N air filter behind headlights, Accufab adj. fuel regulator (set at 45 psi), Walbro GSS 307 fuel pump w/ Casper's hotwire upgrade kit, adj. wastegate actuator (set at 17 lbs), 160 degree thermostat, tb coolant lines blocked, 3" Poston's DP w/ 2.5" Hooker exhaust & AeroChamber mufflers, 3" hi-flow CAT, basic chrome engine dressup items, stock rims on BF Goodrich P255/60/R15 all-weather rear tires, newer paint, 30lb VDO boost gauge and 100psi fuel gauge

first track times ever this spring:)

Note to all Ford/Import owners: BUICK OWNZ J00;)
 
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