04-15-2009, 03:49 PM | #1 |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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flywheel help?
I am switching from a 3 speed to a 700r4 and am in need a new flywheel.
I saw a couple and and they have a 153 tooth and 168 i think? its for a 307 out a 1970. anyone tell me exactly what specs i need? Thanks! |
04-15-2009, 04:02 PM | #2 |
Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: flywheel help?
168 tooth is the most common for trucks. As long as the convertor fits the pattern on the flexplate and the starter matches the flexplate, it does not mattter much. There are two different starters, depending on which flexplate is used. One other thing to consider is the dust cover for the convertor. It can be changed, but they move the starter cutout in for the smaller flexplate and move it to the outside edge for the larger flexplate.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
04-15-2009, 11:37 PM | #3 |
Registered User
Join Date: Mar 2008
Location: Warren, Mi
Posts: 32
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Re: flywheel help?
Keep in mind to look out for a flexplate off a 400 cid sbc. Those flexplates had additional weight on them to externally balance the 400. That extra weight could add a harmonic causing a vibration to your driveline. FYI.
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04-16-2009, 10:41 AM | #4 |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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Re: flywheel help?
Just looking quickly at ebay would any of these work?
http://cgi.ebay.com/ebaymotors/SBC-T...3A1|240%3A1318 or i think this one should fit? http://cgi.ebay.com/ebaymotors/SBC-C...3A1|240%3A1318 Thanks for the help, this is my first engine build, and am completely lost!! |
04-16-2009, 06:57 PM | #5 |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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Re: flywheel help?
Can anyone confirm the second one will fit??
Also another problem i just ran into is the starter.. on the three speed it bolts to the tranny, and on the 700r4 it does not have same mounting plate, i know the dust shield has the hole cut out for it, but how do i mount it? do i need a new starter that can mount the motor?? thanks! |
04-16-2009, 07:18 PM | #6 |
member #16
Join Date: Dec 1999
Location: Yuba City Ca.
Posts: 3,618
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Re: flywheel help?
The second one says it is for a 383-400 eng externally balanced. Yes you will need a different starter.
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/ Last edited by john; 04-16-2009 at 07:19 PM. |
04-16-2009, 07:55 PM | #7 | |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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Re: flywheel help?
Quote:
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04-16-2009, 08:52 PM | #8 |
Son of a gun
Join Date: Jan 2007
Location: Hot Springs, Arkansas
Posts: 1,636
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Re: flywheel help?
any 168 tooth flexplate for a SBC with a two piece rear main seal would work for you (not a 400 though, as mentioned before).
Most that you buy now have dual bolt patterns for the two different converter patterns. You could go to the parts store and get a flexplate for a 1970 307 with a th350 transmission and it should work fine. Take your measurements and check it before you walk out the door.
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Bill BEATERS ARE NEATER |
04-16-2009, 09:59 PM | #9 |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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Re: flywheel help?
Alright thanks, i think i found a good one, but the link wont work when i add it in. Its ebay item number 110375574089
Now for the different starter, is it going to bolt to the block? and does anyone possibly have a good picture of a bolted up 700r4? Last edited by bmrrwolfe; 04-16-2009 at 10:01 PM. |
04-17-2009, 10:51 PM | #10 |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
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Re: flywheel help?
Alright one more question, for the starter i need one that bolts to the block, is there only one style that does this? If so will this starter bolt up for me?
link wont work but its ebay item number 150339229896 thanks!! |
04-17-2009, 11:03 PM | #11 |
Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: flywheel help?
You need the starter that has the staggered bolt holes for the 168. Straight across bolt holes fits the 153.
__________________
1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
04-18-2009, 06:40 AM | #12 | |
1970 C10
Join Date: Dec 2007
Location: Cleveland Ohio
Posts: 212
|
Re: flywheel help?
Quote:
i just googled some good pictures of the difference, and think im gonna go with one of skip whites, ebay item number 250404662246 staggered bolt holes for 168 tooth Last edited by bmrrwolfe; 04-18-2009 at 06:43 AM. |
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