Originally posted by dr_bowtie
Also FMX....look for an emissions manual...Autozone used to carry them...

They have the emissions hose routing for a lot of vehicles.....

So I have to wonder....My last 350 I built I got 210,000 on the rebuild and I used a 160 thermostat.... I also had 4.56 rear gears and 38in tall tires (1ton van) it got 18mpg in town and 24highway with a 350 turbo.....

So....If had I used a 180 thermostat I may have gotten 420,000 miles out of it..... Hell it'd still be running if I hadn't checked the oil and not ran it low and toasted the cam which in turn impregnated the bearings with crap....

any argument....
A 1 ton van that gets 24 m.p.g. with out an overdrive and a 4.56 gear.All I can say is WOW.Are you an engineer for G.M.?