200hp 200ci

mattri

Well-known member
Know this has been flogged before and there's a simmilar post couple of pages back, want to rehash with new head info etc.
Using Mike's head and a 4bbl intake/carb, headers and keeping close to 9.5 comp and a streetable cam how realistic is 200hp?
 
It is a certainty! Mike and co have done there research, and, if anything, there expectations are coservative!

As an example:-
Even stock 1-bbl 3.3's Holdens with 260 degree cams, a good exhast and 1.63/1.48" valves in Aussie do 165 hp and low 16 second quarter miles.

An Aussie 3.3 Holden with iron Yella Terra head and 2-bbl 500 carb, headers and a good 280 cam gives over 200 hp straight out of the box, reving to 5500 rpm.

245 hp is possible with about a 312 degree cam and a 600 cfm carb and high stall auto, reving to 6500 or more.


295 hp is possible with the same HX grinng 312 degree cam and DellOrto DHLAs or Weber DCOE's. 8000 grand is reportedly possible, but 7000 rpm is dead reliable on these engines, with power at about 6800 rpm. Some have suggested you'd get better power with less cam, so theres heaps of potential there.

In a 2300 pound Torana, the 200 hp one does low 14's.

The 245 hp one does 13's,

the 295 hp does high 12's.

On a gutted out Fox 2-dr or 65 Stang, there is a similar amount there.
 
just the head alone is supposed to be good for an extra 70hp. Add all the other goodies and I believe 300hp will be quick approaching.
 
ill be soooo glad when the new head gets here---since im wanting to build a holeshot car (0-60, 1/8, street) id be interested to see the torque figures. not being so familar with aussie cars i could easily be wrong---but i thought holden was Gm of OZ. or am i to understand they source parts from various manufacturers?
 
Holden sure is General Motors, and no parts were designed to be shared orginally.

Considering the first Canadian Ford engines were designed in Dearborn in 1958, the similarites between it an the 1963 Holden Red motor are startling!

Unlike Holden and Chrysler Australia, Ford sort of held the door open for the little 202 Holdens and 265 Valiants. Some versionsmade between 1970 to 1973 had triple carb engines from the factory, able to do low 15's and 14 second quarters.

Ford never made hot I6 engines untill 1992, so you don't find very many hot Log or 2V 200's or 250's. Its all crossflows or Clevelands and Windsors.

Bascially, Holden 186 and 202 sixes share the same 4.08" bore centres, the same Bosch ignition and Bendix Stromberg 1 and 2-bbl carbs, and latter on, the same Borg Warner gearboxes to the Aussie 200/250 sixes. Cranks are interchangeable with some work, and rods and pistons can be swaped over. Around 85 235 cubic inche Holden 202 engines were made with Ford 221 I6 cranks between 1970 and 1983.
 
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