pont stroking a 400 to 455
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Senior Member
Joined: May 2002
Posts: 636
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From: Fredericksburg, VA
Car: '84 Z28
Engine: 350
Transmission: th2004r
pont stroking a 400 to 455
if i start with a pontiac 400 from a 78 T/A can i use the whole rotating assembly from a 455? or do i need to use the 455 rods with 400 pistons?
Supreme Member
Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
You need to have the 455 crank turned down to the 400 main size. Then you could bore the block to the 455 pistons stock being +.030" compasred to 400 bore. Then you could use the 455 rods and pistons.
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