[firebirder]

Hi community,
in the past you helped me with a lot of problems. That was so great. Here is my new wish: at the weekend I bought a completely remanufactured chevy 454. Nothing big. Will run in my Camaro. Price was very fair.

The seller had another BBC engine there and I could not dispute.

It is a 402 Chevy BB. He said it is out of a 70's Chevelle. It runs fine, but is burning oil. So I have to rebuild it. Last night I decided to tickle more power from that engine.

So my question is, what can I do, to make a great engine from that? Are ~500hp or more ralistic w/o supercharger? Build a stroker? What parts should I need?

The only numbers I have at the moment are from the engine (3999290) and from the heads (6272292).

Best regards...Daniel

[bracketeer]

Stick with the 454. Both are BB. Almost every part, excluding the crank, are interchangeable. So there is no cost savings in buying parts for the 402, which is just a .030 over 396. There is no replacement for displacement.

[firebirder]

Maybe we missunderstood. I got both engines and I want to build up the 402 for a rat car / dirt car or something like that. My Maro gets the 454. The 402 is for fun and learning effect only.

So when the blocks are the same, what would be a good upgrade for this engine? Is there a payable 502 stroker kit or something like that?

[Bowtie man]

The 402 has a 3.76 stroke an a smaller bore than the 454.

The 454 is a 4.00 stroke with a 4.250 bore.


They are made on the same principle but with different parts.

The 3.76 stroke crank an a 454 block (4.250) will give you a 427.
There is not much you can change without going to a different block. Unless you just wanted to build the 402.

[cool rockin daddy]

My "Maro"?!?!?!??!?!?!?!?!?!?!?!? Please stop that. It is an insult to all of us Camaro owners. It is as ridiculous as one of the magazines that insists that calling a Chevelle a "Velle" is cool. Cut it out. Please.

[techinspector1]

Probe makes a 30cc dome piston. With some 112cc open chamber heads (like maybe some 049's decked down to 112), zero deck and 4.125" bore, you would be right at 10.0:1. Use a cam something like this solid flat tappet cam with EDM machined lifters to spit oil directly onto the lobes from the bottom of the lifter housing.
http://www.summitracing.com/parts/ISK-396266/
http://www.probeindustries.com/Chevy...ons_s/1026.htm