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Old 05-04-2013, 12:49 PM
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305 Engine

hey i have a chevy 305 engine out of a monte carlo, i also have a eaton m90 just sitting around would that be a waste to come up with a way to fit that on? if so do you guys have any ideas what would be dicent for adding boost to this engine? its pretty stock right now

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Old 05-04-2013, 01:29 PM
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Quote:
Originally Posted by monte79flow View Post
hey i have a chevy 305 engine out of a monte carlo, i also have a eaton m90 just sitting around would that be a waste to come up with a way to fit that on? if so do you guys have any ideas what would be dicent for adding boost to this engine? its pretty stock right now
Although there's probably easier ways to boost a sbc, you could do it and if it's the stock 79 305, it would only improve performance, though it would probably only help it on the low end of the power spectrum. I think 5.0L is about the limit of the m90. If it's actually the m62 you're really running out of wiggle room with it. The user Ramzoom on here adapted the eaton M62 supercharger to a carb'd quad4 in a draw-through setup. It was a very novel idea. I would start there.

Here's the thread:

Rambler American engine conversion #2

Edit:

This might be the most helpful post for you:

Rambler American engine conversion #2

Last edited by Valkyrie5.7; 05-04-2013 at 01:38 PM.
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Old 05-04-2013, 02:04 PM
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so I should look for a m62 setup? I'm just looking for opinions and optians
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Old 05-04-2013, 02:15 PM
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so I should look for a m62 setup? I'm just looking for opinions and optians
No, the M62 is meant for smaller displacement motors. Check out the pictures in the link I provided. If that kind of fabrication is beyond what you believe you can do, I'd just go with a simpler solution like an Edlebrock E-force supercharger kit, if boost is what you really want.
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Old 05-04-2013, 10:14 PM
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An M90 on a stock 305 is not a bad combo. You can go on youtube and find some videos of custom m90 conversions.

I used to rebuild eaton superchargers and had a couple customers install them on 305's and where very happy with them. I used to include a CD with all my rebuilds, articles pictures, videos of custom eaton install's ect. However my computer died and I lost all 99% of the stuff. I'll look around my desk and see if I can find an old CD.

I made a twin eaton setup for my 383 and it went like crazy! It's going to be very time consuming, carburetor tuning on a budget is not easy. You will need to weld pretty good and have the willpower to continue on as everyone says you cant do it.
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