That would be + .040 out of the deck in my 470.
That's where your hot-rodding skills will be tested or made, making things work that aren't supposed to. The tunnel ram I have is just a wieand standard port, I welded the outside of the runners and ported it to a larger gasket size.
440 source pistons are Icon.
Atleast Mahle advertising their part number: 930274175 to be 1.32ch. If you have some other realiable info about those let me know. I dont want to order wrong parts. My best shot so far has been try to trust what manifacturer says but of course that could be typo.
I have heard good about 440 Source stuff. Those are used in really strong engines without problems. For street engine i prefer to choose piston that doesnt need support rails for oil ring.
I have stantard port Weiand tunnel ram too, If i find that i need to get bigger ports i will get indy max wedge port tunnel ram or make one from aluminium sheet. I try first with standart port. I already matched top and bottom part and cleaned up runners and plenum. I personally dont find reason to thicken runners from that intake as it needs lots of argon and welding wire or rods and in here Finland those arent cheap and take lots of time. I find it easier to make that from sheet. Dont get me wrong, its cool that someone wants to go bit different route and try things! I still have atleast hundreds of hours to do in body work alone as i make all reinforcements and body work by my self. I also need to shorten up that dana, build that 727 etc. so i dont want to use too much time to work up intake alone.
Yeah, i accidentally found those by looking 1.32 CH 4.375 Bore Pistons from Summit. Atleast those seem quite nice pistons for price.
Wow thats alot! Here 300cf argon bottle fill alone cost about 500$.
