come Sat afternoon my 400 build will be running. It's buttoned up with exception of the hei and carb. really excited to see how those parts will pay off...will open it up on premium with some lucas octane boost but Tim built one with higher dcr than i'm running and ran ok on 92 so we shall see.

again the parts as followssince it's been nearly a year!)

comp cam retro roller hyd cam 212, 218 with .520 lift on both
scorpion pedestal roller rockers
aussie heads (56cc) ported and hardened intake and exhaust seats, 2.19, 1.71 valves
matching valve springs (double)
full roller chain straight up- rollmaster with isis chain
5 billion dollar harmonic balancer...romac
using edelbrock streetmaster single plenum intake due to future propane use
1405 edelbrock carb- 650cfm (600 real number) propane carb once swaped over.
line bored and bored .040, balanced of course...went together like a dream!

I want to run it on petrol before i switch to propane...I could end up putting it in my daughters 70.5 falcon and would then swap out the intake. I have a different build in mind for propane using open chamber heads which are supposed to be better with the gas...also with the badgers i have which were initially designed for propane conversion....and some other thing's i've learned.

Should put out about 390-400hp petrol and about 350 propane as is....and great torque as well.




bout time eh?

 

Bout time is right, now i just have to get my crap together (and pay the maching bill lol, probably not till winter, but at least i got a shop to do it in .)

 

yeah 'bout time, lol (I need to tell myself that) What comp. ratio are we at?

 

Roger,

It all sounds good, but that Edelbrock Streetmaster isn't good for any high RPM power, the Holley is better, but not much. Why do you need a single plane?

 

My guess would be for the density of propane.

 

Is the 70 1/2 Falcon a two door or four door? I have a 70 1/2 Falcon Four Door with a 302 and a three speed. It has sat outside for many years but is straight with surface rust. Is restorable but would certainly make a good parts car. It if were a two door I would have restored it years ago.

 

falcon is 2 door, cr is 9.4 or so and dcr is 8.3 or so.... i'm thinking the single plane might work better with propane..I have a performer and weiand standing by....
parts car eh? they are good for all the torino's etc as you know. A 4 door would make someone a good fam car too...

getting close...getting carb on with 4" spacer etc...to clear hei distributor. Tim is supposed to be in the area and asked about meeting up so hopefullly he can hear it run.

 

For gasoline the single plane/dual plane issue is a real issue. This is because you are flowing a MIXTURE of a liquid, atomized into a gaseous form, and air. With propane, you are flowing a pure gas. With a mixture of gasoline and air, the manifold designer has to worry about flowing the fuel/air mixture without the two elements separating. For LPG this is not an issue.

I would THINK that the dual plane would be a better choice because if you ever decide to go back to gasoline, you will have a manifold that will work well for both. This is my theory. There may be someone with real experience in this area.

 

it's not that big of a project to swap intakes and I've got the two others..

Now...issue...

got fire and weak on gas so attacking that tomorrow.

When it does begin to run i'm getting a rubbing (metal on metal) from the flex plate/cover area.

The motor was a big issue getting in with the tools i had and it banged around quite a bit...i was advised to try it with mounts in place -NO-NO. so ya think i might have bent the cover plate a bit?

What else could it be. The starter ingages and disengages fine and the rpm has to be at a bit above idle it seems...not running yet due to fuel delivery probs..

 

Remove the cover and try it.

 

or bolt the tranny/bellhousing to try and flatten the coverplate out? you did install it right? otherwise the starter won't line up.

 

starter works fine...coverplate only goes on one way i think.

 

I'd guess that maybe the bolts on the cover plate (i'm assuming auto and auto. cover plates have the removable plate to get to the torque convertor bolts) are sticking out a tad to far?

 

inspection cover should thread from the front into the C6(?) housing. What size flexplate did you use? 11", 12" ?

 

Yeah, the starter hole can only be in one spot. However different vehicle applications move the starter into different locations. I think if you list the specifics of tranny type, engine (we know that, lol), vehicle, and other little things, we might have a better idea. My experience with the torque converter not being in all the way is the starter won't turn the flexplate over at all due to the bind. Also, removing the starter and blowing a little air in there, does any metal fragments fall out? Aluminum will be the housing being chewed by the flexplate.