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| 70valiant' engine build for 200 HP https://slantsix.org/forum/viewtopic.php?t=43366 |
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| Author: | Dart270 [ Thu Jan 27, 2011 7:24 am ] |
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That will be a good match. You should be around 8.4-8.8:1. Lou |
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| Author: | onemoparman [ Sat Jan 29, 2011 9:06 pm ] |
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what kind of streetable hp can you get out of a well tuned motor keeping the bbd or holley 2280? with decent port work, a good ign(msd), free flowing 2.25 or 2.5 exhaust & normally asp. of coarse? and what cam and compression suggestions? ....... I have a 4 speed od truck. thanks |
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| Author: | 70valiant [ Sun Jan 30, 2011 5:12 am ] |
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I was getting about 138hp at the wheels( 16.35@82 mph 3180pounds, 1/4 mile time calculator) out of my Valiant. 9.8:1, ported, stock cam, electronic ignition with GM HEI, clifford shorties Yed to a 2 1/2" pipe, Cherry Bomb turbo muffler and 2 1/4 " tailpipe, electric fan, BBD, 904 with stock converter, 8 3/4 3.91sg |
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| Author: | DAlexanderW [ Sun Jan 30, 2011 6:03 am ] |
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With flat top pistons and stock length connecting rods, how much would i have to mill the head to get 10.0:1 cr? Can I use pump 91 Octane with this config., or am I going to have to use fancy higher octane? The engine is a '74 225. |
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| Author: | Charrlie_S [ Sun Jan 30, 2011 6:24 am ] |
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Quote: With flat top pistons and stock length connecting rods, how much would i have to mill the head to get 10.0:1 cr? Can I use pump 91 Octane with this config., or am I going to have to use fancy higher octane?
It is impossible to tell. You need to take measurments. The motor in my 66 Valiant is 10.06:1 The short block is stock, the head is milled between .100 and .125. It already had one cut of a forgotten amount, and I had an additional .100 taken off. The chambers are 39 CC's, and a .022 steel shim gasket. As for the octane, it would depend on the cam and ign. timeing.
The engine is a '74 225. |
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