i have just bought a 400 donk, just last weekend
2V closed chamber heads, stainless valves, hardened seats, heavy duty springs, mild porting
Yella terra roller rockers,
Edlebrock performer manifold,
etc etc etc,
pics are here,
it has a crow cam/double row timing chain etc with it, but i will get new ones, the cam isnt what i want, its model # 21771
2nd on on this page, so if anyone wants it, make an offer, comes with lifters, done between 5000-8000km in the 400.
Now i was planning to run a single impco 425 on it, should i be looking at twin impco setup, or dual GRA?? it will be mainly a cruiser anyway, and is going into my 81' LTD,
I currently have an Impco 425 with a Impco model E convertor, actually in the gas place today getting gas line changed from 1/4 to 5/16 and another tune, its a fairly close to stock 351 ,
with a stage 2 cam (previous owner couldnt tell me specs, but it was bigger than standard)
2V closed chamber heads that were put on last weekend when i cooked the bloody thing for the 2nd time...lost water and did a headgasket.
story on that one here
Weiand X-cellerator manifold,
dual 2 1/2 exhaust, tri-Y motorvator extractors...
picked up alot since going straight LPG from dual fuel,
with dual fuel on LPG (had a small LPF brand mixer and convertor) it made 100rwhp, bit sad...
then after bolting the impco 425 and Model E convertor it went to 140rwhp leaning out really bad anywhere after 3800rpm, so it had more in it.....
and well i will find out this afternoon some time what difference the bigger feed line and a better tune does, probably nothing spectacular, getting replaced with the 400 in the coming months anyway, thought i might as well squeeze what i can out of the 351 in the meantime.