Join Date: Jul 2001
Location: Houston, Tx, USA
A4 blocks do not come in two different deck heights, but the Darts do. There are FMS offerings at other deck heights but they are different part numbers.
A4 and R302 blocks if never been touched of course will REQUIRE machine work, they do not even come in a standard bore size. They will REQUIRE more machine work than the Dart offerings. The Dart comes machined but usually requires SOME machine work.
A4 blocks have not been made in years, so chances of finding one that has never been touched is pretty slim.
Once you do the machine work on either a new R302 or new Dart, chances are you will have the same amount of money or close to it in either offering. Although the Dart Sportsman is a little cheaper from the get go, so might come out a little cheaper at the end of the day.
Can anyone show any proof of a A4 block breaking from too much power? It would probably be the weakest out of the three options and I personally have never seen one break from too much power. I have seen tons of them in the 1400hp power ranges and no breakages. I'd bet someone not wanting to spend $10k on a motor, is not looking to ever get in that power range anyway, but again I'd like to see where their "weakness" has ever been a problem.
You can try piecing a motor together yourself in hopes of saving money, but chances are it will end up costing more than some of the built ones out there. I have seen built Dart shortblocks new in the $4-5k range, I think AD Performance sells them for around $4300 just as an example.
How and why would you ever have $3500+ tied up into a R302 or A4 block? I own a A4 block in my LX, I think I paid $1700 new for it and then $400-500 in machine work to have it ready to build. I bought this before there was a Dart block and before there was a R302. Matter of fact it was back when A4 blocks were flat out hard to come by but your only real option besides maybe a Boss block.
This $10k motor offering, what all did it include? I have every bit of $15k in my 347, you would be surprised how quickly somethings end up adding to. For instance as I pointed out I have $2200 in my block, then $1800 in lifters, $1800 in rods, $1500 or so in the crank, $1000 in the pistons, $300 in the cam, probably $500 in the balancings, $1000 in balancer/flywheel/flexplate ... look I am around $10k already and I have not counted all the ARP bolts/studs, oilpan, oil pickup, oil pump, the heads(big $$$ here), the pushrods, the rockers and god only knows what else I am leaving off. But I have billet internals and all the other fun high hp stuff that is supposed to last, it could be done for cheaper with cheaper parts.
Personally if I was doing a motor, I'd do a Dart Sportsman block because it lets you run regular lifters(although this is minor since the Iron Eagle can use them with som mods) and a regular oil pan(which I would want on a street car). Plus it is the cheapest new option and still so strong that you need not worry about ever breaking it. I'd go with whatever the affordable steel crank/rod combo is today, probably something made by Eagle or one of those companies. What I am describing I bet is what AD Performance is selling and probably what other companies in the same price range are selling.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.