400 Small Block Ideas
Thread Starter
Racer
Joined: Jan 2004
Posts: 261
Likes: 0
From: Belgium WI
400 Small Block Ideas
Just got my hands on a standard bore 400 small block, 4 bolt #1511 casting. Looking for ideas for crank, pistons, cam, etc for starters. Want a 400HP+ street/strip car naturally aspirated. Should I consider a 421, or less?
I am willing to sacrifice some driveability, but I have to drive 50 miles to get to the track. Also would still like some weekend cruises around town.
Looking for some ideas and I am taking my time on this build. 700R4 Auto tranny and 3.07 gears right now.
I am willing to sacrifice some driveability, but I have to drive 50 miles to get to the track. Also would still like some weekend cruises around town.
Looking for some ideas and I am taking my time on this build. 700R4 Auto tranny and 3.07 gears right now.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
It will be easy to make 400hp. Cam Hyd/roller in the 230 range, crank 3.75 stroke eagle, 6" eagle rods, SRP pistons 10.5 to 1 comp., Have the rotating assembly internally balanced, Heads Brodix Track1 cnc ported, intake SuperRam or Mini ram take your pick, 1.6 roller rockers, fluidampner, it would probably put you in the 500hp range... 
As for the 400 4bolt block I'm with CFI they are known for being weak. It is better to convert a 2 bolt 400 to a splayed 4 bolt. The other option is to by an aftermarket block...
As for the 400 4bolt block I'm with CFI they are known for being weak. It is better to convert a 2 bolt 400 to a splayed 4 bolt. The other option is to by an aftermarket block...
Last edited by chriswtx; Oct 22, 2004 at 07:47 PM.
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 20
From: San Marcos Texas
If you are looking to make more power and you want it to be bulletproof ditch the 4 bolt and find a 2 bolt or spend the $$$ for an aftermarket block...
Last edited by chriswtx; Oct 22, 2004 at 10:01 PM.
