Johnson
The head it self is not the problem for the tranny. But more of a motor issue Because of what ever cam you have.?? and Not knowing the spects on it is the problem for the tranny.Because You may need more stall speed over the stock. Now 2) The head may very well be a issue Again Because of cam. This meaning to Small for how the Head was built. Again Not knowing what your Cam is. The cams that I listed will work with the stock convertor (if it's up to again not knowing anything about it Miles wise) But those cam have a fairly smooth idle. another words Not lumpy.
The tin plate that your are talking about Should be your Gasket(intake/exhasut)That needs to be there. Now as for installing the Lump NO it can Not be done with the head on the motor It HAs to come off. And as for the average Back yard mechanic. I would have to say No. Because of the added Work that yet needs to be done to the Head. It has to be drilled from the Underside and counter sunk, for the bolt that holds the lump in place.Then Comes the work That is Needed to the Lumps themselfs. The flashing that is still on
PES cast lumps need to be cleaned up The Center Main Head Bolt hole needs to be Opened Up at Least On Every set i have bought from them.(Don't take it wrong they are nice Just they need some work) Then You have to tapper/Blend the intake side to the port floor to the intake itself. OR Make a peice to go into the intake. And Then That too would need to be blended to the floor So for the most part it is better to just work the Lump itself with out adding More work to the whole process. They would GREATLY Improve air flow.
But again the cam may very well be a issue Because of the size Of the valves.sorry and again Not knowing the specks.
and not to beat a offen touched topic But when You Build a motor You have to look at the Whole Picture. What you plain on doing with the motor/Car,truck what ever. But Cam, Head,Intake system, Headers Tranny ,Convertor. All has to work together. Or in some cases you end up with some problems Like your running into right Now Or even in the worse case You end Up brakeing alot of parts.
At this point right now with the lack of info about the cam and Tranny/conertor miles.What I would try and do is find a REALY cheap stock head Just clean it up check the spring to make sure non are broke Iwouldn't worry about if it smokes on start up because of maybe worn guides or anything Just make sure the spring are not broke Stick it on the motor If it still won't idle Then I would have to go with the Fact That You have a Problem with the convertor. If it Does run and idle with no Issues. Then I would just take the springs off the other Head ,clean up the test head
do just a good valve job on it clean up the ports. And if your going to have the Boss removed stay with the smaller stock valves. just to give you a idea on how the lump imporves flow. But Not knowing the reall flow numbers on you head the way it is or whos work it is. Ruffly what you maybe flowing with out the lumps could be around 190 cfm give or take like i said. Now with the lump it can flow over 240 cfm
The only other opption I see is to Get a new stall convertor something with a little more then the stock stall speed.(1000-1500(2000?) stall)
PS have you thought about trying to get with the folks that either built your motor Or the Head and see if they may have the card Or to what lift they built the head for (meaning the spring).
sorry a long post but i hope this helps }[oooooo]
God doesn't like ugly.
