Jack
Well-known member
- Joined
- Dec 27, 2000
- Messages
- 1,825
- Location
- Florence, SC (Timmonsville SC)
- Corvette
- 71 War Bonnet Yellow VERT 71 BH Blue CPE (SOLD)
Would like your thoughts-opinions on motor swap & stow:
My 71 has has numbers matching motor & drivetrain. Its original unmolested L48 350 (270HP) runs great, no noise or smoke. OE drivetrain (TH400, 3.08 gear) also great shape.
I just acquired a complete 1974 400" sbc by swapping an extra MSD 6 box & blaster coil I had. I measured bores, rods, mains: all standard; no spun bearings and no cracks in block) This motor has been laying around a junkyard (rust) for many years and will need boring (looks like +0.020" over will do it). I'm thinking of 5.7" or 6" rods and just enough cam/heads/pistons to make about 400HP/450TQ w/ about 9.5:1 CR. I can build the 400+.
I'm thinking of pulling the good original L48 350 and stowing it for posterity. Replace with above 400+ so I can play with the car's accelerator without worries of damaging original motor. I can R&R the motor.
What do you think of this motor swap & stow approach for this car & driver?
JACK:gap
My 71 has has numbers matching motor & drivetrain. Its original unmolested L48 350 (270HP) runs great, no noise or smoke. OE drivetrain (TH400, 3.08 gear) also great shape.
I just acquired a complete 1974 400" sbc by swapping an extra MSD 6 box & blaster coil I had. I measured bores, rods, mains: all standard; no spun bearings and no cracks in block) This motor has been laying around a junkyard (rust) for many years and will need boring (looks like +0.020" over will do it). I'm thinking of 5.7" or 6" rods and just enough cam/heads/pistons to make about 400HP/450TQ w/ about 9.5:1 CR. I can build the 400+.
I'm thinking of pulling the good original L48 350 and stowing it for posterity. Replace with above 400+ so I can play with the car's accelerator without worries of damaging original motor. I can R&R the motor.
What do you think of this motor swap & stow approach for this car & driver?
JACK:gap