Awesome link Catfish! Excellent prices on the fuel pressure gauges and adapter. Exactly what I need to troubleshoot the B250 TBI fuel issues.
I wonder if one of these HiPo 454 Thottle Body's would screw up frscke1's smog numbers? So glad I don't have to deal with that. Some inexpensive Mustang insurance.
You just never know.
Definetely will be installing the CFM 109 ported carb spacer underneath the Rochester 2BBL on my 4.3 OMC
I have had both headers on a 327 2bbl in a 70 C10, and true duals with stock cast iron manifolds in a 97 Sierra 1500 EFI 350, both with no X pipe. No smog on the carbed 327, 160 thermostat. 97 EFI smallblock, 195 thermostat. Both GM Trucks, but the C10 Shorty with the 327/4sp was very different than the Sierra. Both were way too loud. One thing to consider in a Van 4 sure.
If cost was no object, I'd still keep the cast iron manifolds on all my vans. run true duals with an X pipe to one side in back, quiet mufflers, Seen a few red hot Mopar, n, 454 MH motors with glowing headers, and I just think iron manifolds run cooler. What I want under the Doghouse is as cool as possible.