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Corvette
C3 Forum
New wheels and New Problem
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<blockquote data-quote="Jr. Corvette" data-source="post: 111441" data-attributes="member: 1906"><p>Thank you so much Jeremiad for offering to help me. I really appreciate that. However I have good and surprising news for everyone!</p><p></p><p>I HAVE FINALLY FIXED IT! I bet no body could have guessed this and in all honesty, I probably should have thought about this more.</p><p></p><p>During my engine build and ordering parts, it became time to balance the engine. I was at the parts store and wasn't sure if my engine was internal or external. I phoned up GM while I was there and they told me it was external. Now, yes my 350 is technically external because it is a late model first gen. Both the 400 and the late 350's are however the 350 uses the same neutral balancer as all other 350's but the flexplate is weighted. The 400's use a external balancer (that is weighted) and a weighted flexplate. My parts guy tells me he is all out of 350 balancers but that the 400's would work just fine seen as how they are both externally balanced..... He didn't know that the balancers were completely different and couldn't be swapped. I phoned up my tranny guy and he did some research for me and made me aware of this. I now know to never trust what any guy in a part store says. What an idiot I was to not double check what he said. </p><p></p><p>Anyway, the guy who sold me all my parts moved to Newfoundland but the store agree to warrenty the part and gave me a new balancer at cost netting me $26 back for an issue that could have wrecked my $10,000+ engine.</p><p></p><p>Moving on. It didn't cause any damage. The vibration is gone and boy, it is smooth as glass literally feels like driving on glass compared to before. Major difference. </p><p></p><p>I have also fixed the cooling issue by installing some Derale 4000 CFM fans. I was a bit busy fixing some rust on my parents suv and in my raste and excitement to get my car running and install electric fans, I failed to accurately measure the fan depth. I went with the close enough approach. I ended up having to drop my left suspension and clearance the fan so the A-arm actually sits inside the fan (but has room for suspension travel and room between the fan blades). It barely clears elsewhere. We are talking 1/8" here and a 1/16" there! I don't believe anyone else has installed these fans before on there C3 and I can see why. Nobody's just as stupi... special as me<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />. Just to top of how.. special I am, I also forgot to check how much these fans draw. 50Amps! I had the factory 63 and actually calaculated my amp usuage before the fans and I was overpowering the alternator. I had to buy a new 150A alternator. Everything runs fantasti now. No engine bogging rolling up and down the windows. I even found a new light on my dash. I never knew we have a 'brights' light. I always thought it was for cruise control or something because it never worked. That's how bad my alternator situation was. Haha.</p><p></p><p>I love how it turned out though. Keeps the new engine farely cool at 192-195 at idle and no more than 203-206 elsewhere. Might have to consider an electric water pump if I want it cooler, or just wait until my engine breaks in a bit more. </p><p></p><p>Thanks for all the help and suggestions!!! I greatly appreciate this forum and you guys, the Corvette community.</p></blockquote><p></p>
[QUOTE="Jr. Corvette, post: 111441, member: 1906"] Thank you so much Jeremiad for offering to help me. I really appreciate that. However I have good and surprising news for everyone! I HAVE FINALLY FIXED IT! I bet no body could have guessed this and in all honesty, I probably should have thought about this more. During my engine build and ordering parts, it became time to balance the engine. I was at the parts store and wasn't sure if my engine was internal or external. I phoned up GM while I was there and they told me it was external. Now, yes my 350 is technically external because it is a late model first gen. Both the 400 and the late 350's are however the 350 uses the same neutral balancer as all other 350's but the flexplate is weighted. The 400's use a external balancer (that is weighted) and a weighted flexplate. My parts guy tells me he is all out of 350 balancers but that the 400's would work just fine seen as how they are both externally balanced..... He didn't know that the balancers were completely different and couldn't be swapped. I phoned up my tranny guy and he did some research for me and made me aware of this. I now know to never trust what any guy in a part store says. What an idiot I was to not double check what he said. Anyway, the guy who sold me all my parts moved to Newfoundland but the store agree to warrenty the part and gave me a new balancer at cost netting me $26 back for an issue that could have wrecked my $10,000+ engine. Moving on. It didn't cause any damage. The vibration is gone and boy, it is smooth as glass literally feels like driving on glass compared to before. Major difference. I have also fixed the cooling issue by installing some Derale 4000 CFM fans. I was a bit busy fixing some rust on my parents suv and in my raste and excitement to get my car running and install electric fans, I failed to accurately measure the fan depth. I went with the close enough approach. I ended up having to drop my left suspension and clearance the fan so the A-arm actually sits inside the fan (but has room for suspension travel and room between the fan blades). It barely clears elsewhere. We are talking 1/8" here and a 1/16" there! I don't believe anyone else has installed these fans before on there C3 and I can see why. Nobody's just as stupi... special as me:). Just to top of how.. special I am, I also forgot to check how much these fans draw. 50Amps! I had the factory 63 and actually calaculated my amp usuage before the fans and I was overpowering the alternator. I had to buy a new 150A alternator. Everything runs fantasti now. No engine bogging rolling up and down the windows. I even found a new light on my dash. I never knew we have a 'brights' light. I always thought it was for cruise control or something because it never worked. That's how bad my alternator situation was. Haha. I love how it turned out though. Keeps the new engine farely cool at 192-195 at idle and no more than 203-206 elsewhere. Might have to consider an electric water pump if I want it cooler, or just wait until my engine breaks in a bit more. Thanks for all the help and suggestions!!! I greatly appreciate this forum and you guys, the Corvette community. [/QUOTE]
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