View Single Post
  #3  
Old January 19th, 2023, 10:20 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 478 V6, SM420
Posts: 386
Rep Power: 183
Prowbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the roughProwbar is a jewel in the rough
Default Re: 305E vs 351E design differences

All blocks 305-478 are the same size. 305 has the smallest bore at 4.25". 351 is 4.56" and 401 is 4.87". All have the same stroke, 3.58". The 478 has a 5.125" bore with a 3.86" stroke. The 379 and 432 are a stroked 351 and 401 respectively.
Reply With Quote