o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o
This model fits the  earlier GM "long rod / deep" master cylinder design
o All engines with PS pump on driver's side - compatible with rack and pinion conversions
o For use with disc / drum or disc / disc brakes (not for use with 4 wheel drum brakes)
o
Features an adjustable brake pedal rod to allow for a range of brake pedal height adjustment
o Models with 4' / 6' PS line set include overlength hoses with re-usable / re-buildable hose ends  
7 1/4 " installed length from firewall to MC mounting flange - no firewall modifications required
1980 - 1987 Chevrolet / GMC C/K Truck Hydraulic Brake Assist Unit - Model # 3540
Price: $575 THIS IS THE BASE MODEL BRAKE ASSIST UNIT ITSELF - ADD OPTIONS BELOW





*GM deep vs. shallow master cylinder design:
"early / deep"                      "late / shallow"
NOTE: Part # 3040L is the brake unit itself without power steering line set. Part # 3040 is the brake unit with the 4' power steering line set
This model is identical in all ways to the 3540 model except for being equipped with the late / shallow style short MC pushrod 
1980 - 1987 Chevrolet / GMC C/K Truck Hydraulic Brake Assist Unit - Model # 3040
o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o
This model fits the later GM "short rod / shallow" master cylinder design
o
All engines with PS pump on driver's side - compatible with rack and pinion conversions
o For use with disc / drum or disc / disc brakes (not for use with 4 wheel drum brakes)
o   Features an adjustable brake pedal rod to allow for a range of brake pedal height adjustment
o Models with 4' / 6' PS line set include overlength hoses with re-usable / re-buildable hose ends   
7 1/4 " installed length from firewall to MC mounting flange - no firewall modifications required
NOTE: Part # 3540L is the brake unit itself without power steering line set. Part # 3540 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3040 model except for being equipped with the early / deep style long MC pushrod 

1980 - 1987 Chevy / GMC C/K Series Truck

SHOW PREPARED MODEL
SHOWN WITH PS LINE SET

Price: $575 THIS IS THE BASE MODEL BRAKE ASSIST UNIT ITSELF - ADD OPTIONS BELOW





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"early / long MC pushrod"                                               "late / short MC pushrod"  


If your truck is factory equipped with the later design plastic / aluminum QTU (quick take up) design master cylinder (with a rear register size larger than 1.800"), it will be necessary for you to replace it with a later model '96-'99 C/K series version factory equipped with hydraulic brake assist - MC8126 or equivalent applicable cross reference version.

 


All with factory vacuum booster as shown above using a stamped steel firewall standoff bracket riveted to the booster (factory booster stands about 3" from the firewall and bolts down from the engine side of firewall)


All Chevy / GMC Trucks with Old Body Style (OBS) front end as shown above including the "V" Series Suburban

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