Help! I did a search for "modified upper plenum" and "modified doghouse" going back 6 months but most of what I found turned into debates about the merits of larger TBs.
Within a week or so a new motor will be going into my car. The buildup is as follows: girdled stock block, .020 over J&Es, 212/212 cam, and ported iron heads/intake. I'll be stripping the 72's, TE-45 (the car has a V2 FM already), and 62mm TB off the tired old stock motor. I have two upper plenums: my old stock doghouse that was "matched" to the 62mm TB, and another in a box that's been modified (has a curved plate welded/blended in it, very nicely done, I don't know what vendor it came from) that I bought months ago from the Parts For Sale forum but never used.
Would there be any gains to running the modified doghouse, or should I just stick with my old one? The car went low low 11's on the old motor and the goal is medium-high 10s on the new one. A friend felt that the modified plenum might cause the rear cylinders to run a bit lean, hence my inquiry. To anticipate a possible question, no I don't have, nor have I used, an RJC Powerplate.
Thanks in advance for any "been there, done that" replies!
Morgan
Within a week or so a new motor will be going into my car. The buildup is as follows: girdled stock block, .020 over J&Es, 212/212 cam, and ported iron heads/intake. I'll be stripping the 72's, TE-45 (the car has a V2 FM already), and 62mm TB off the tired old stock motor. I have two upper plenums: my old stock doghouse that was "matched" to the 62mm TB, and another in a box that's been modified (has a curved plate welded/blended in it, very nicely done, I don't know what vendor it came from) that I bought months ago from the Parts For Sale forum but never used.
Would there be any gains to running the modified doghouse, or should I just stick with my old one? The car went low low 11's on the old motor and the goal is medium-high 10s on the new one. A friend felt that the modified plenum might cause the rear cylinders to run a bit lean, hence my inquiry. To anticipate a possible question, no I don't have, nor have I used, an RJC Powerplate.
Thanks in advance for any "been there, done that" replies!
Morgan