Originally Posted by daviddoughty1
Thanks, that site has a lot of stroker info. My crank was supposed to be done yesterday so I'll drop back by the machine shop and get some specifics on the parts list, how far he planned to deck and shave things, etc
Please post up what you find. Hopefully your engine guy is on the ball.
It sounds ignorant of me to be so generic of "make sure you use the correct combination of parts" without specifics. When I built me stroker there was little in the way of rods and pistons to choose from. Used Eagle H beam rods that were longer then the stock 4.0 (4.2 is shortest then 4.0 next is the Eagles) and then had custom pistons made to order. I knew I wanted a zero deck with just enough shaved from the block to flatten the deck surface and a relatively tight quench of the mid.040`s. Head volume was around 62 cc`s IIRC. Since then several compaines have introduced pistons for strokers but I have not kept up on the combinations. The guys on the strokers forum can help with that.
I like the 4.0/Eagles longer rods because of the rod to stroke ratio but also piston engagement within the bore at BDC. Be sure your engine guys checks/corrects for length as the factory rods are all over the place.
Not a big fan on Comp Cams. Quality control and cam/spring specs are not the greatest. Lunati`s have some good numbers but their ramp angles are a bit aggressive IMHO and the journal finish has eaten more then one set of cam bearings for folks. Hesco is a good choice.......Link below. If your going to run much more then stock lift roller rockers are a worthwhile investment. Mopar and Harland Sharp are strong considerations. Not a fan of the Terra`s.
LS1/LS6 vales/springs/retainers and keepers are cheap and effective. Worthwhile investments. There is plenty of meat under the spring pockets if your engine guys wants (he will need to in order to keep spring pressures down) needs to machine for spring height. Keep close to the factory valve sizes as anything much larger gets shrouded by the bore.
Hesco while not cheap makes some very good parts. Hesco was contracted by AMC/Mopar for their racing endeavors back in the day. Leee (yes 3 E`s) and Bennie know more about strokers then most anybody.
The Hi Flow water pump has a machined vane rather then a simple stamped vane and flows much better. The Hi Flow thermostat housing is a worthwhile investment. Another is the Melling HV oil pump they sell. It is blueprinted (generic term) and also has a sqruiter (sp) for the cam gear/dist. Make sure the oil pump sets flat on the block. It is not common but sometimes the block has a raised machined ridge that needs to be flattened. In any case Hesco have parts you cannot get anywhere else and the proven track record of parts that perform.
Be cautious of anything written by Dino. Real nice guy whom does his best to help. He lives in the land of sand and his fuel is so much different then what we burn here as to not be comparable. Important when your working with the combustion process. He is good with numbers but has little actual proof to back them up. You will find plenty of theory but again little practical proven data.
Welcome to PM me if you want to yak. A quick search will bring up some specs on the engine I run as well as some dyno pulls.