theres not really any reason you need to seal off your intake manifold. it's just a spot that exhaust gas heated under the carb to help the fuel vaporize.
i've been running a stock intake and headers for the better part of 6 months around the house, screwing around and what not with the 292. it starts up everytime...and thats with the automatic heat coil operated choke unhooked. cold starts really aren't a problem...there was snow on the ground here in Wis. when i did...with temperatures in the 30's and 40's...she still started and ran.
so, thats my 2 cents. wait and see how it runs. don't worry about it until after that.
.later days.
.sam.
1969 K20 , with a '67 front clip. fleetside. 292, 3x1 offy, headers. sm465 4spd. getting put back together, almost ready for paint.
doing it all myself.
19 and lovin' it.
"proper" is so over-rated.
.later days.
.sam.
