1wild&crazyguy
Banned
so they flow 350cfm ootb?
not ootb, thats the plastic mold thats epoxy modified n such.
Really i was hoping somebody would come out with a head that flowed [email protected] OOTB and still had a 2.02 and 195-205cc int runner, i wouldnt care if required a special intake or spacers just as long as the exhaust was factory flange.
They were indeed fugly.......i would never recommend running a set of edelbrock mopar heads, i purchased mine BNIB, with a bright yellow sticker on the box that stated "bolt on, no machine work required"
well..........86 ports were "twisted" and didnt even have .050 on the runner walls, the springs had 4 shims and not even 90lbs seat pressure, they also needed to be resurfaced they were not true. the valves need a grind, and the pushrod holes needed to be redrilled. not to mention almost all the holes were helicoiled.
heres a pic of the ports the way they came from the box. i called a REP over the issue, and he said to me "chevy heads are our #1 seller, we dont have nearly as strict quality control on the ford/mopar heads, sorry but i dont see an issue, just minor clean up with a dremel." i noted the sticker "bolt on and go, no machine work required"....needless to say, it cost me $1200 in machine work to have them fixed, upon the $1600 purchase price.
AFTER the work
not to mention almost all the holes were helicoiled.
this is what they do.....
just for your information: the helicoils are there to give the threads more strength. A thread in Aluminium is not as strong as a thread in steel or cast iron regarding tensile strength given the same length. This is plus in my opinion! i agree about the other issues.....not good.
Michael
+1...anything threaded into aluminum that has any kind of torque or stress on it should be helicoiled...far stronger than threaded aluminum.
just for your information: the helicoils are there to give the threads more strength. A thread in Aluminium is not as strong as a thread in steel or cast iron regarding tensile strength given the same length. This is plus in my opinion! i agree about the other issues.....not good.
Michael
That's a race head. I'm sure the thought process is there is little but B1-BAs as an intermediate between the street type heads (RPMs, Indys,W2/W5) and the exotic race stuff (W9,Pseries). Note the choice of lifter angle, the threaded coolant passage points for additional coolant flow, and the 18-bolt potential. It's not a street head.
As far as aftermarket... They ALL are like that. They ALL need to be checked and corrected. Tehy will bolt on, and they will run in many cases better than a non-performacne oriented shop's basic repair/rebuild factory heads will. But, as far as what I want them for, that means consistently fixing the too-tight guide clearances, replacing the springs, having an accurate 5 angle valve job done, fixing the cut on the valves, and having the decks cut properly. I also will hand blend and gasket match. Usually the total cost for a set of RPMS, ready to run to my standards, is $2500. I'll add Hughes is, in terms of machining quality, just as bad and Indy is worse...
I liken it to Denny's telling me how good their food is. It's food I don't have to cook and can eat without getting sick. So it's defiantely food, but as they sell it - not good food by my standards...lol.