cool man, let me know when you are ready and ill help
tri power, power gain?
- Thread starter 64 200 ranchero
- Start date
just got quoted on the head, 300 - 350 bux to rebuild, reseat, valvejob. ill prob have it up and running by next month :mrgreen:
sp_alloy_head
Well-known member
sweet! 
damm just got told by the machenist that the head was ported so much that he is afraid to put new seats in it 
sp_alloy_head
Well-known member
Well you have the offy, that's the expensive part so don't fret.
yeah, the head is still rebuildable but needs someone who specializes in the 200 head, he said its a risk if he does it and id have to pay him, this was deffinently a hace head, if anyone thinks they can work with it let me know but im going to buy a guaranteed rebuildable head from martinez engine cores and have it rebuilt with the offy and bigger valves
my buddy told me that on v8 tri power, they block off the idle circuit and close the butterfly all the way, would this work on a six? sounds like it would cause vac leaks however it would keep the idle mixture from being too rich if it worked 
64 200 ranchero":20ms3ycu said:my buddy told me that on v8 tri power, they block off the idle circuit and close the butterfly all the way, would this work on a six? sounds like it would cause vac leaks however it would keep the idle mixture from being too rich if it worked
Simple observation : Offy and most home-built tri's use the same Progressive linkage setup. The log head sixes flow requirements for drivability are low flow/light throttle with the outer "progressives" snapping wide-open at a tune-able throttle position. The outer carbs are typically shut down until needed. The center carb is typically higher flow and need to be tunable to compensate for outer vac/fuel idle-accel' transitions. (Balancing leaky outers to follow center/main carb is the trick)
Pics of Hillborn Injected and other radical early engines (car-porn 8) ) were mostly WOT tune specific - not very "drivable".
Of course NOW,you can get the Hilborn injecter bodies with electronic FI installed in theinjector body.SNEAKY.
Leo
if i were to use the holley 1904's what venturi should i use for the secondaries, i have a small 60 style and a 61 style, im thinking the small one?
64 200 ranchero":399urdnk said:my buddy told me that on v8 tri power, they block off the idle circuit and close the butterfly all the way, would this work on a six? sounds like it would cause vac leaks however it would keep the idle mixture from being too rich if it worked
On factory V8 tri-powers the outer carbs have no idle mixture controls. The throttles are completely shut at idle and the engine idles only on the center carb.
