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| Forged crank in cast crank block https://www.slantsix.org/forum/viewtopic.php?t=28550 |
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| Author: | WyldeBill6 [ Wed Apr 23, 2008 8:59 pm ] |
| Post subject: | Forged crank in cast crank block |
Is it possible to put a forged crank in a cast crank block? I think you have to do some machining to make it work. Am I correct? Wylde Bill |
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| Author: | Joshie225 [ Wed Apr 23, 2008 10:36 pm ] |
| Post subject: | |
Why? The cast crank is plenty strong. What is it you need to accomplish? |
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| Author: | LUCKY13 [ Wed Apr 23, 2008 11:19 pm ] |
| Post subject: | |
Yea, the cast crank also has smaller journals and that will allow you to find rods cheap. Remember the engine in the Mopar Muscle mag ( I believe that was the one) they made 320hp and used the cast crank. Jess |
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| Author: | blasphemous [ Wed Apr 23, 2008 11:52 pm ] |
| Post subject: | |
The reason I'm interested in this is because I can get a forged crank cheaper than a cast crank, both remaned. |
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| Author: | slantzilla [ Thu Apr 24, 2008 6:11 am ] |
| Post subject: | |
Quote: The reason I'm interested in this is because I can get a forged crank cheaper than a cast crank, both remaned.
It will not fit though, so savings will be moot.  It shouldn't be too hard to find a steel crank block. I've been using a Car Quest reground steel crank in my nitrous motor for years. So far, so good. One other bit of basically useless trivia, when Mike J ran the first 10 second pass by a door car, he used a cast crank motor. 
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| Author: | DusterIdiot [ Thu Apr 24, 2008 7:02 am ] |
| Post subject: | Lol... |
I wish you were near me you could have a forged crank block for pretty darn cheap...LOL... either motor is fine to work with, the added benefit of the cast crank motor is the crank is quite a bit lighter than the forged crank unit, so it tends to wind up faster than the forged crank (this will be moot in day to day traffic , of course...) -D.Idiot |
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| Author: | blasphemous [ Thu Apr 24, 2008 10:13 am ] |
| Post subject: | |
I have a 77-ish block in my car. I found out when I replaced the bearings and the rod bearings were too big. I'm assuming this is probably a cast crank engine now? |
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| Author: | Joshie225 [ Thu Apr 24, 2008 10:17 am ] |
| Post subject: | |
Yes, the change to cast cranks was mid '76. If you got rod bearings that were too wide that would indicate the cast crank engine. I have some standard size cast crank rod bearings if you need them. Cover shipping and they are yours. |
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| Author: | blasphemous [ Fri Apr 25, 2008 7:34 am ] |
| Post subject: | |
You're not the first to offer me standard bearings, but I thank you. My crank is already .010/.010 and it needs to be turned again. |
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