engine swap - Team Camaro Tech
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post #1 of 11 (permalink) Old Aug 30th, 04, 04:10 PM Thread Starter
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Steve
 
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Bought a 350 cu. in motor and went to swap it for a dead 350 cu. in motor. When I pulled the old one out and removed the flex plate in measures 12 7/8 in in dia. The new 350 came with a fly wheel on it for a manual transmission and a starter motor and it measures 14 1/8 inches.When I switched them the old flex plate is not large enough to touch the starter. I can't switch starters because the bolt patterns are different. What am I missing here?. I thought any 350 would bolt right up [img]graemlins/clonk.gif[/img] the tranny is a 72 350 Any advice?

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post #2 of 11 (permalink) Old Aug 30th, 04, 04:49 PM
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Bill
 
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tweb,
Just get a large 168 tooth flywheel (flexplate) for the 350. They cost around $20 most anywhere and it would be the easiest way to go.

Bill Koustenis
Owner
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Waldorf Md
1971 Chevelle "Heavy Chevy" original owner


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post #3 of 11 (permalink) Old Aug 30th, 04, 04:52 PM
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Al
 
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Is your block tapped with 3 starter bolt holes? I have seen some that aren't.

The small flywheel takes a starter nose that has bolts which are inline with each other, 1 long and 1 short.

The big flywheel uses a starter nose that has the bolt holes staggered, both bolts the same length.

If your block is not drilled for the type of starter you need, I'm not sure what to tell you. I have used the starter as a template and drilled and tapped the block myself, but it's kind of a scary proposition.

I think some of the afertmarket mini starters are adjustable - you might look into something like that.

Or like Bill said - get the big flexplate. (Make sure it's not for a 400 ci motor)
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post #4 of 11 (permalink) Old Aug 30th, 04, 07:10 PM
 
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The best thing you can do is use a 305 flywheel and starter because of clearance sakes .
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post #5 of 11 (permalink) Old Aug 31st, 04, 02:45 AM Thread Starter
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Thanks a bunch.The flex plate sounds like the way to go.
81 can you clarify. Clearance for what? What's different with a 305.

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post #6 of 11 (permalink) Old Aug 31st, 04, 04:13 AM
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First make sure your 350 isn't drilled for both starter bolt patterns... Closest to the block, if there's a second hole, an inch to the rear (lined up with the outer hole) you can just use the starter and flexplate from the old motor.

If not, go to the parts store or dealerr, and ask em for a flexplate for a 78 caprice with a 350. Bring your manual trans flywheel with. If the ring gear is the same size (it should be), you're in. Be sure to use NEW bolts, they come with a locking compound on the threads.





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post #7 of 11 (permalink) Old Aug 31st, 04, 07:14 PM Thread Starter
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OH CRAP I just finished installing the motor tonight before I read JimM's post. Exactly how important is the locking compound. My damn book didn't mention it. I torqued them to 55 ft pds. Man am I ever @#%$ off. I did get to use the old flywheel and starter. [img]graemlins/clonk.gif[/img]

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post #8 of 11 (permalink) Old Sep 2nd, 04, 07:11 AM
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I wouldn't pull it apart just to put thread lock on the bolts. I have done the same thing and never had a problem.
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post #9 of 11 (permalink) Old Sep 2nd, 04, 05:56 PM Thread Starter
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Thanks deerhunter, hope you're right. The bolts did have the lock washers on them. If they ever came loose, I'm sure I'll hear some strange noises first.

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post #10 of 11 (permalink) Old Sep 3rd, 04, 05:49 AM
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I wouldn't worry about the thread locker too much it is always a good idea to use thread locker on almost every bolt when doing reassembly but i have done many many clutches taken off the flywheel everytime to have it refinished or replaced and have never had a problem ( I have used lock-tite 50% of the time approx.) and i really haven't had any problems with either one .. now with a real high horsepower application this may differ due to extreme vibrations and so forth but for moderate applications you should be ok!

1969 Z/28 CLONE 350
4 SPD MUNCIE,
4 WHEEL DISK BRAKES,
4:11 POSI
BLUE W/WHITE STRIPES


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post #11 of 11 (permalink) Old Sep 4th, 04, 04:21 PM
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Just keep your fingers crossed...

Next time tho... new arp flexplate bolts cost about $5. They come with a bead of red locking glop about half way down the threads. New Chevy bolts are the same way but cost more.

And yes, once apon a time, I had some work loose. They get trapped by the torque converter, and the dowels transfer the power... you don't know nuttin till the center rips out of the flexplate from the vibration!





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