We plan on upgrading the block in our car and I thought I would ask for input and experiences from the members here.

Currently we're running a 74 factory RB block 4.25 stroke .055 overbore Callies crank and rods Diamond pistions 13.5-1 Cam Motion custom grind solid roller aprox .730 lift Out of the box Pro-Comp heads Team G intake with 1250 Dominator in a 3400 Lbs 73 Cuda It has run a best of 9.85@136.mph We knew when we built the engine the stock block would be the weak link and have been fortunate to get two seasons out of this combination by keeping the rpms down and running the car sparingly 200-250 passes the last two years.

We've finally got the funds to order the block and tweak a few things in the engine I.E. a jump in compression and some port work. We've looked at the Koleno World and Keith Black blocks. Were going for aluminum for weight savings and repair-ability. Looks like the KB has the most room to grow. I'm also wondering if we should go with the raised cam position? Any input or personal experiences would be greatly appreciated Thanks Randy

PS I'm aware of the lack of pickup in the KB block and the absence of fuel pump mounting and factory engine mounts We'll be going with a front motor plate

KB is nice if you can afford it. Picking up a World block from the local dealer is a cost effective way to go but those blocks are heavy.

Once you have a good block you'll be able to pick up a bunch of power by just just changing a few parts. That Team G intake is costing you hp and porting the heads should be good for a bunch.

MW port size I'd run a Super Victor intake.

Get the the raised cam...wish I would have, when I think of possible new combos with my stuff that is the one limit that always comes up.

Has anyone seen the HP Performance block? They were at the nats and looks like a great block!

Casey

Another vote for KB

Since you want to buy new.... KB alum is the one

KB

Whats rong with the Indy MAXX block? 4 bolts on all mains.

Is it not a good block?

Any idea on pricing, and availability of his aluminum 440 block?

About every post on blocks here the majority points to the KB.
Aluminum is the way to go, and that is my biggest regret; not going aluminum when I had the chance. At about where you are at, you can't get a better weight savings much cheaper than the $$ difference between aluminum and steel.

Well after talking to the builder and weighing the pros and cons we decided on the World products aluminum block. The KB was a fine piece. The KB can go to 667 Cubic inches, but requires an external oiling system (no provision for a sump) The cost was 5700.00 750.00 for the oil pump (which may have clearance problems with stock k-frames) plus shipping.They said horsepower in the range of 2000 was not out of the realm for this block! They were very friendly on the phone and informative. Turn around time was 12 weeks from order.

Now the reasons we went with the World. We have a certain budget for this build. We knew going forward that we had to upgrade the rockers (been using Pro-Comp rockers!) Have to have headers made, port the heads,Jesel belt drive, yada yada yada. The builder explained that the World Products is a quality piece, granted it can only grow to 630 ci's, but has a provision for an internal pickup. The World aluminum block came in at 4500 shipped. Twelve week turn around. The cost difference will help offset the cost of other components. Its gonna be a long time before we ever approach the power levels the KB block can withstand!

We are going with the raised cam position. Upping the compression from 13.5 to 15.0 to 1 Porting the heads Super Victor intake. Custom headers (something a little bigger then 1-7/8 LOL)

I'll come back and let you know how things go with the build Randy

KB if you have the time to spare & $$

Indy Max would be my second choice, just purchase it thru one of their dealers.

In my dealings with World Products, I will effectively say, they match Indy for horrible customer service and $hitty attitude...And I will NEVER buy anything again with their logo on it, keep it I don't need the issues or the attitude that comes with it!

Randy,

Read my "514 on the dyno" thread when you get a chance. I've already been down the road that you're taking. I used a World iron block but the rest if fairly similiar. If you read that thread carefully and look at the pictures you'll get some ideas.

I'm a naysayer when it comes to N/A motors and aluminum blocks do to the inherit problems on ring seal They won't hold as good as ring seal as the cast grey iron, high nickel and compact graphite iron will The iron blocks are heavier, 325 lbs.+