402 help please
Thread Starter
Le Mans Master
Joined: Feb 2001
Posts: 8,017
Likes: 2
From: The problem is all inside your head she said to me.
402 help please
Alright, well here's the short version. My brother has a 72 402 SS Chevelle. It's original to the point that he has the build sheet and the block is still the original. Took 3 years to restore and the motor was done when he bought it. 3 years on the body and paint.
Now cam is wiped. The car is set up manual valve body th400, 4.11. The engine has MSD ignition, Victor Jr, Deamon, Headers.
Problem/oppertunity He's looking at it now as a chance to up grade to a roller cam set up. We are going to pull the engine and check/replace all the bearings.
My problem with this is the $ input to do the roller set up on iron chevy heads and only 402Ci. Can another standard chevy crank bring up the Ci's to 427 or 454? Would it be easier/cheaper to just get a 450 HP or so Small block. At this point I don't think BB or sb will be an issue just Hp for dollars???? Thanks Gordon.
Now cam is wiped. The car is set up manual valve body th400, 4.11. The engine has MSD ignition, Victor Jr, Deamon, Headers.
Problem/oppertunity He's looking at it now as a chance to up grade to a roller cam set up. We are going to pull the engine and check/replace all the bearings.
My problem with this is the $ input to do the roller set up on iron chevy heads and only 402Ci. Can another standard chevy crank bring up the Ci's to 427 or 454? Would it be easier/cheaper to just get a 450 HP or so Small block. At this point I don't think BB or sb will be an issue just Hp for dollars???? Thanks Gordon.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The 402 is the 396, bored .030" by the factory. The 366 truck engine, 396, 402, and 427, all shared the same 3.76" stroke. The 454 is the 4.25" bore, 427, with a 4.00" stroke. You can mix and match to your hearts content. The roller cam set up will fit any combination you want to screw together. Aluminum or iron heads won't matter on cam parts application. The above applies to the Mark IV engine, like you have. I haven't gotten into the Gen V engines.
RACE ON!!!
RACE ON!!!
Thread Starter
Le Mans Master
Joined: Feb 2001
Posts: 8,017
Likes: 2
From: The problem is all inside your head she said to me.
Originally Posted by CFI-EFI
The 402 is the 396, bored .030" by the factory. The 366 truck engine, 396, 402, and 427, all shared the same 3.76" stroke. The 454 is the 4.25" bore, 427, with a 4.00" stroke. You can mix and match to your hearts content. The roller cam set up will fit any combination you want to screw together. Aluminum or iron heads won't matter on cam parts application. The above applies to the Mark IV engine, like you have. I haven't gotten into the Gen V engines.
RACE ON!!!
RACE ON!!!
I'll let you know how it all turns out in a few months.
