hay i have a 540 dart and 345dartpro1 heads and i am making 718hp at 5900rpm you should talk to rmbuilder he can set you up rigth. .i was told if i went with the smaller head i could of got 50 more ponys. the bigger heads you have to trun 6000 to 6500rpm . if you are runnig a bravo drive it is nice to keep the rpm down5500rpm

I thought "special" engine builders could easily get 700 hp even out of 454's with Edelbrock heads , if not I heard they just raise the correction factor!!! I guess "he" went the other direction-big mongo heads!!! Bob, maybe you could make a cam install video for the builders that get confused on which way to install roller lifters, Smitty

...

[QUOTE=articfriends;3261288! Bob, maybe you could make a cam install video for the builders that get confused on which way to install roller lifters, Smitty [/QUOTE]


Round end facing UP right ?

A few years ago a guy surfaced on here claiming to make ridiculous hp from common combinations that used the same old garden variety parts. This self proclaimed engine builder created a fancy website and became a advertiser on here, he then posted dyno sheets with inflated numbers (correction factors over 20% in mid 60 degree weather).He then proceeded to defraud several members of OSO by building them engines that had MAJOR flaws and upon inspection in one instance the pair of motors he built were 10 mph SLOWER then before, failed at 10 or so hours, had several lifter sets in backwards to where the tie bars were bound up and the wheels were eating into the cam on a angle, the pistons that were SUPPOSED to be new were the original ones, the deception goes on and on. It got to the point of involvement of law enforcement and this self proclaimed engine builder relented and refunded some of the money but even then nowhere close to the actual defrauded amount or lost boating, destroyed parts, etc, etc, Smitty

bajabob what compression do you have, also do run solid or hyd roller
thanks

i think i am 9.6comp went with solid roller cam 675lift dart pro1 heads 345 dart single intake 1000holley msd 34timing 718hp at 5900rpm dyno

on my heads 5angle vale jop and jessel rockers other wise stock out of the box