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Street driving your not gonna see much of a difference between a 650 or 750...

Well I thought the same thing,but then why would the factory put the insulation there to begin with?

See an old hotrodder was telling me they did it back in the day.

I have heard of people painting the underside of the valley pan on a bb so that it reduces the heatunerneath the intake.Anyone do it?

Well From the sound of it I think you would want to drop the PV to a 4.5 and start with 68 primary jets and a 72 secondary jetting.Stock pv in that would be a 6.5 and I think just with the cam your running you might want a little smaller one.But even at that A DP aint great with an automatic...

What size motor ,cam and etc.etc.Sounds like a PV.Drop 2 sizes in jets at a time and see what that does.

Not sure about the #'s myself but I think milling the 302's and running a thinner head gasket would get you in the ballpark.

451!!!!Less weight- fits better in an A body....Just my opinion!

Been warm a time or two...Bet that smelled good>>>>>LOL

And you have to mill the intake side of the heads also or mill the intake...Not sure of those #'s (that all sound right?)

I think for every .0040 you take off a head is like 1 cc reduction...so like a -.040 on 906's is like a 10cc reduction in combustin chamber volume...so you go from a 81cc(?) to 71 cc.....which (depending on the year should bring you close to 9:6-1 /9:8-1

Hey SB what is the weight of the car its going in?

MAKE SURE YOU HAVE A GOOD BLOCK CASTING!!!(not yelling)I will talk to a buddy that runs one about his cam and such.I dont think its as big as you would think.

I am trying to think here....Cant remember if the MP dist uses the weights or not(brainfart)Might want to work through some jet changes also

Are you running stock ignition?

LOL my buddy just got one that had 2 sprockets!Maybe I should give you his #....LOL

I am gonna say it sounds like one I had doing the same thing and ended up bein a lobe on the cam.For some reason it went flat on break-in.And I have heard 509 do it pretty often.Dont know for sure.

Well,I am kinda in the same boat so my thoughts were,I would stick with the 360...Mainly because if you trash the motor or something goes bang on it...Lots of parts readily available..And you already have it in.Not that hard to make a good street/strip 360.IMO

Yummy!!!

That sounds about right! :read2:

Hey guy just lookin for some input...Ok i have a 67 dart /6 auto....not enough a$$ for my liking anyhow...I have a few 440's sittin around got trans,pans and fenderwell headers enogh stuff to do the swap!...Now I also have a later modle 318 trans etc.My car is not a cherry but i am not sure i...