[AD removed for archives] ------------------------------------------------------------------- Free CD Player - makes a great stocking stuffer. caacSnNb7yoMza/PermissionData ------------------------------------------------------------------- Ken, The Poly manifold that I have is NOT a single plane. It is a duel plane manifold, square bore. I don't have a dual quad manifold, it is a SINGLE quad manifold...... Cam is a function, but if you check flow numbers on Polys you will find that they flow much better than the later 318s, their ports are bigger to start with. It does not take much to cut down the velocity and then the horse power. I was just reviewing a dyno report on a supped up 318 (not Poly) and it was making 325HP with 318 heads that were mildly ported, they then put 360 heads on it, (yes they were milled to get the compression up) and the HP dropped to 293. On my 500IN motor, I am being very careful with the port size - VS - cam and compression to make sure I have the velocity needed. It is more important than most people think. Earl Earl, Would it have the velocity if it were stroked to a 400 CID? I would hate to go back to the HEAVY cast iron stock manifold. ...and I've said it before and I'll say it again. The factory iron dual quad manifold has the SAME single plane design as the Weiand (I have put them side by side) and no one has said that one has a velocity problem. In fact Ma Mopar must have thought is was good since they put it on their cars. It looks to me like Weiand just turned the factory dual quad into an aluminum single 4 barrel. I know my 318 really starts to pull when the RPMs come up, but I think that is also a function of the cam. Does anyone have any hard data on the manifolds? Regards, Ken -----Original Message----- From: Earl Helm [mailto:earlh@xxxxxxxxxxxxxx] Sent: Thursday, November 18, 2004 2:11 PM To: 1962to1965mopars@xxxxxxxxxx Subject: RE: 318 Poly manifold and carb Yep, a little better, but not much.... I just don't think that Polys have the velocity for a single plane. Earl, have you tried a 4 hole spacer on the Weiand? This often picks up a little low end by making the runners a bit longer and improves signal to the carb. The taller the better. Just a thought....Joe [AD removed for archives] ------------------------------------------------------------------- Are you serious about buying a NEW car or truck soon? Research before stepping on the car lot and save THOUSANDS! Get NO OBLIGATION price quotes from car dealers in your area. caacOlPbV1hOjf/LeadClick ------------------------------------------------------------------- ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. [AD removed for archives] ------------------------------------------------------------------- Free recipes to get you in shape caacQ4Ob7yoMzf/PermissionData ------------------------------------------------------------------- ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.