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| Going from truck with 225 to a 170 out of a valiant... https://slantsix.org/forum/viewtopic.php?t=38146 |
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| Author: | krivman65 [ Sun Nov 29, 2009 4:46 pm ] |
| Post subject: | Going from truck with 225 to a 170 out of a valiant... |
So, I bought an '85 Ram a while back and found out that the valves were stuck. I pulled the motor and bought a running 170 out of an early Valiant, thinking it might be cheaper than rebuilding the 225, because I think it has more problems than not. I have been running into small things because the 225 was made for a truck, and the 170 obviously wasn't. So today, I went to put the 225 oil pick up on(because the pan is different), and found that it wouldn't fit. Any thoughts? Did I maybe bend the pick up? Has anyone ever tried this? Should I just give up on the 170 and go back to the 225 and hope that it doesn't need to be rebuilt? Any thoughts would be greatly appreciated. Thanks! |
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| Author: | hantayo13 [ Sun Nov 29, 2009 4:55 pm ] |
| Post subject: | |
the 170 head will fit on the 225 |
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| Author: | Charrlie_S [ Sun Nov 29, 2009 5:26 pm ] |
| Post subject: | |
What year is the 170? There should not be a problem swaping the oil pan and pick up, BUT: You mentioned early 170. If the engine is 1967 or earlier, you will be unable to use the auto trans from the 85 truck, with out buying a special torque converter. If the truck is a standard shift, you will need a early (1967 down) flywheel. Check the hub and counter-bore size on the rear of the crankshaft before doing anything more. |
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| Author: | coconuteater64 [ Sun Nov 29, 2009 6:02 pm ] |
| Post subject: | |
Swapping the 170 will work if these issues are addressed, but it'll be way down on torque compared to a 225. Swapping the head and using the hydro valvetrain is one option, |
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| Author: | krivman65 [ Sun Nov 29, 2009 8:59 pm ] |
| Post subject: | |
Well, actually the 170 is a '62.. and the truck is a manual(so was the '62). Yeah, I realize that I will be losing some torque... hopefully not too much. I have the flywheel out of the '62 as well... Any other thoughts? Thanks guys! |
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| Author: | 63Valiant [ Mon Nov 30, 2009 6:19 am ] |
| Post subject: | |
Be forewarned, the 170 does fine in a car, but a heavy vehicle is a bit much for it. I had an extended box 70's Dodge Tradesman van that the PO swapped in a 170. I tuned that engine to where it ran like new, but it had such a hard time pushing that big van around. I had the gas pedal to the floor most of the time I was driving it, not an exaggeration here, it was wide open most of the time just to keep up with traffic. This got old after a couple of years and I swapped a 225 back in. The power gain was such a relief! |
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| Author: | krivman65 [ Mon Nov 30, 2009 1:55 pm ] |
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well... It sounds like maybe the 225 is the way to go... Maybe this project will have to be on hold for a bit... Thanks for the input guys! I didn't realize that it would make that much of a difference! |
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| Author: | sandy in BC [ Mon Nov 30, 2009 2:10 pm ] |
| Post subject: | |
Living in Kansas might make that 170 a better pick than around here. If you want to do 70 into a headwind on the Interstate you will want the 225. |
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