[F-BIRD'88]

If it has a long duration cam you will never get it right untill you address the distributor advance curve. A low stall converter will not allow an engine to idle correctly in gear if the cam is big.

fix the distributor

Cam or converter swap, pick one.

[F-BIRD'88]

The idle quality of the Weiand 7546 manifold is not that great in general.
Of al the different SBC intakes I have used this was by far the worst for idle quality, in general. Good power on a racey motor thou.
A really bad choice for a truck.

[foodstamp]

well i know its been a while since i last posted, ended up putting truck in the shop. carb issue never got fixed, but found out what cam was in it... it had a 292 comp cam... with 2 lobes completely wore off, 2 lobes thatrounded smoothly... so i had a howards cam and lifters installed. cam specs are

Strong Low & Mid-Range Torque
.447/.447 lift
280°/280° in/out
208°/208° in/out @050
111° lobe seperation

lifters came with the cam, says they are matched, but i think its more snake oil than anything...

a few more details about engine/trans: 3970010 block punched 30 over, the new cam/lifters,1.6 rollers,small camel hump heads and a 700r4 trans.

hope this helps