angst911

ok, I was planning on doing a 6.0L Iron block stroker motor, 4.125 stroke x 4.030 bore. Someone mentioned to me possible horrible oil consumption due to blowby, has anyone had any experience with this, or heard anything about this? Thanks.

Pro Stock John

iTrader: (34)

I had a 4.075 stroke x 4.060 bore and did not have weird oil consumption.

I'd talk to knowledgeable folks about the virtues of running a 112 vs a 114 lsa camshaft. I had both and the 112 cam (maybe for a number of reasons) peaked below 6000 and the 114 cam peaked at almost 6200.

angst911

I was planning on a 112 lsa, and spraying the motor.

BIGBOS

It should be fine..I got a 6.0L iron block, with the stock crank, running a good amount of boost...4.030 bore, 372c.i.

angst911

how did you pull that stroke off, I'll I've ever seen is 4" or 4.125"

taqwache

it is probably an off set ground 4" crank that uses a 2.00 rod journal. am i right psj?

angst911

bleh, nevermind

silent1

iTrader: (3)

I know it's too soon to tell but, my 422 iron block w/ a 112LSA cam isn't having any problems of the sort. It's only been a week though.

Pro Stock John

iTrader: (34)

4.125 stroke + 112 LSA, I've been there, and the torque with my 4400 stall and 4.10 gears was so extreme that I could never hook the car on the street below 80mph.

Chicago Crew UnderBoss

iTrader: (1)

I can also tell you from what i have seen, experienced, read about and heard from other major tuners, that any stroke more than 4.00 is TOO MUCH for a LS1/6 motor, ESPECIALLY if its an ironblock, b/c the geometry of the motor will be off and will cause both oil consumption problems, scuffing of pistons and reluctor wheel problems! Stick with a 4.030 bore and 4.00 crank for classic for 409 CUBES! Otherwise, if you sonic test the block for proper thickness and going to stay N/A or only spray 100HP occassinally then 4.060 bore with 4.00 crank will get you 414cid and should be good to go!