Brake booster with big block

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Cilver Beast

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489
im putting a 489 into an 86 c10. Anyone know what size booster I’ll need?
 

Charlie

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:welcome:
 

Cilver Beast

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Thanks. The 489 has tall valve covers, I bought the truck pretty much stripped down. I’m guessing a stock booster isn’t going to fit with engine in.
 

nvrenuf

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I've got a 91 Blazer with a 454, tall valve covers and Off Road Design poly motor mounts, no issues with the original booster.
 

Cilver Beast

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Thanks. Engine is still at builders. Just want to get something done on truck while I wait. Appreciate the reply
 

nvrenuf

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Valve cover extensions?
 

Cilver Beast

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Thanks Shorty. Exactly what i needed to see. Your engine bay is top notch.
 

Kim Burke

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It'll fit
 

Cilver Beast

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I appreciate the help kim and nvrenuf. Are you able to get the valve cover off on the drivers side? Reason I ask is that this will be more of a strip/strip project. High compression with a solid cam. I'll be making adjustments quite often.
 

nvrenuf

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Yeah - unbolt it, move it towards the carb then up/off. Mine clears roller rockers and poly locks.
 

malibuman402

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C10 Silverado
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BB 402+.060 = 413.8CI
mine clears with stock booster

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