Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Dual quads

<< < (8/8)

chance:
The 400 block I have is a 71, the car originally came with a 301. the guy i got the car from didn't know anything about the car or engines so someone put it in there before he got it. So is there an N cast into the crank I should  be looking for or a special number to Identify the crank?

Thanks!
Take care!!
God Bless!!!

Cliff Ruggles:
Most of the nodular cranks I've seen have a huge "N" cast into them.  It can also be identified by researching the casting number on it.....Cliff

chance:
Hello my friend. Hope all is well with you and yours. Since our last talk I've identified the crank i pulled out of the 400 and it's a 350 crank. maybe that's why it tore itself apart in such a short time??? Anyway I picked up a set of 061 big valve heads with 72cc CC , which are better than the 4x units i have. So I should't have to go with dome pistons after all. flat tops should be adequate. Should I get a 400 crank vs turning the 350 crank? cost wise it seem to be with in 100 bucks of just replacing it.
Thanks for your time!!
Have a Merry Christmas and a Happy New Year!!
God Bless!!!   

Cliff Ruggles:
The crankshafts are the same dimensions, just different balance.  Replacing it would depend on if it needs heavy metal added to work with a 400 spinning assembly.

CC the 061 heads they may have small enough chambers you don't need a domed piston in it.  I do NOT like or used domed pistons in Pontiac engines, they work much better with flat top pistons due to the flat chamber floors, machined chambers, and 30 degree intake seats.....Cliff

chance:
OK thank you! The 350 crank is grooved pretty deep so I'll be making even lighter than it already is. sounds like I better get another crank. Thanks for the info....as always your the man...LOL
Take care!
God Bless!!

Navigation

[0] Message Index

[*] Previous page