PDA

View Full Version : Bottom end

bodhi
03-04-2004, 11:01 PM
What would be needed to build a bottom end strong enough to handle- say a 300 direct port kit?
Will an aluminum block handle it reliably?
I'm thinking a Lunati crank, Lunati pro-mod rods, Billet mains, ARP head studs, lowered top ring land JE pistons.
Would that do it? or would a cast iron block be needed?
GOT SPD
03-04-2004, 11:18 PM
That is similar to my setup and I run a 300 shot. The block is fine IMO.
bodhi
03-04-2004, 11:59 PM
Do you have any thermal coatings?
GOT SPD
03-05-2004, 01:02 AM
nope. I built it to see how fast a 346 could go.
DebianDog
03-05-2004, 03:01 AM
ummm so a 250 shot would be easy. Hummm.


I need to start saving....
GOT SPD
03-05-2004, 07:23 PM
there is an MTi car that just ran a mid 9 with heads/cam, stock bottom end and a 250 shot. If the tuning is right on and the setup is correct a 250 can be done on a stock bottom end, but I would not bet money on it lasting too terribly long. Even the motor I have in my car will eventually fail and I know it. When it does the real motor goes in ;) :D

Don't build the car if you can't afford to fix it when it breaks. I see way too many people spending all their money on building a killer setup and when it fails the car sits for months because they can't afford to fix it. Just a word of wisdom. :)
CT Morgan
03-07-2004, 10:38 PM
Originally posted by bodhi
What would be needed to build a bottom end strong enough to handle- say a 300 direct port kit?
Will an aluminum block handle it reliably?
I'm thinking a Lunati crank, Lunati pro-mod rods, Billet mains, ARP head studs, lowered top ring land JE pistons.
Would that do it? or would a cast iron block be needed?

Well total power is always the key. A bottom end built with those parts will hold a hell of a lot of power, but you will need to o-ring the block to take full advantage of it. Personally I don't like pushing aluminum sleeved motors over 600 hp, but that is a personal choice. I also like the structural support for the crank provided by the iron block. The new block cost compared to that list you just made is nothing.

Right now I'm turning just over 600 rwhp (about 780 flywheel... 200-4R tranny) with my current setup. I'm running similar internals, but using a hardened stock crank. I don't feel I can safely push that crank more than about another 100 rwhp though. It's not really a big deal though because the driveline really starts taking tremendous abuse at my car's weight.