HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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C-5 Bell Housing

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C-5 Bell Housing

Post  Tehone on Sat Nov 13, 2010 7:32 pm

Other than the user friendliness of the two piece BH over the one piece will the one piece work just as well?

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Re: C-5 Bell Housing

Post  xschop on Sun Nov 14, 2010 9:15 am

1 piece requires more $$ for an aftermarket starter and a smaller clutch. The $80 Truck starter fits the 2-piece C5 BH even and you need to be able to inspect the Pilot adapter for proper insertion depth of the TT shaft anyways (well not according to RH)
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Re: C-5 Bell Housing

Post  robstah on Sun Nov 14, 2010 10:47 pm

Rob, I thought a lot of that information was debunked. I plan on running the 1 piece automatic BH with a 12" clutch and flywheel. Since the motor did not come with a starter, installing a smaller one won't hurt me, though I still don't see what people are talking about with that. I may pick up a cheap used truck one and test fit it.

Just to note, the C6 manual bellhousings are now a 1 piece from the factory (and look almost identical to the C5 auto ones). I take it that they noted a strength issue with the 2 piece and changed it all. As for the automatic bellhousings, you can find them pretty cheap. There's one on ebay right now for 75 shipped. I think I paid 80 for mine. Don't get me wrong though, you will have to modify it, but there is no doubt that it will be stronger than the manual one.

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Re: C-5 Bell Housing

Post  xschop on Mon Nov 15, 2010 1:25 am

Has anyone installed a 12" clutch in the 1-piece Auto BH? I may have not seen the post. I've seen the post where the car starter doesn't fit inside the Auto BH, that would be a deal maker if the Truck Starter fit the Auto BH. I know first hand that it fits the 2-piece and gives mega-clearance for the headers Very Happy

If someone doesn't get this one in the next few hours it's mine LOL......

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Re: C-5 Bell Housing

Post  robstah on Mon Nov 15, 2010 2:00 am

Greg posted a thread about it here:

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I'll try and do some mock testing, even though I am at no point of taking the motor off the engine stand.

Also, that ebay post has 2 available. Wink

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Re: C-5 Bell Housing

Post  xschop on Mon Nov 15, 2010 2:20 am

Until someone bolts a 12" flywheel, clutch disc and pressure plate and then slaps on the Auto C5 BH, it is still unknown. Maybe someone has done it and can chime in. But for Factory HP engines, the smaller clutch will work just fine in the Auto BH's anyways.
I'm all for it either way, I'm cookin' some more C5 adapter plates tonight LOL. Friggin 2:30 am


Last edited by xschop on Mon Nov 15, 2010 2:34 am; edited 1 time in total
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Re: C-5 Bell Housing

Post  robstah on Mon Nov 15, 2010 2:32 am

Damnit Rob, you're right. I just tried sitting my bellhousing over the flywheel with pressure plate and it's definitely a no go. Embarassed

Looks like I will be selling my auto bellhousing as well. Anyone have a manual one lying around by chance?

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Re: C-5 Bell Housing

Post  xschop on Mon Nov 15, 2010 2:39 am

Which Flywheel, disc, and Pressure plate do you have? When you bolt down the PP to the flywheel most of them gain another 1/4" or so inner BH clearance.
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Re: C-5 Bell Housing

Post  robstah on Mon Nov 15, 2010 2:40 am

Flywheel and pressure plate are stock LS1 and the clutch disc is a custom 11 3/4" one with Porsche spline made by Gripforce. The PP sits flat on the flywheel.

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Re: C-5 Bell Housing

Post  xschop on Mon Nov 15, 2010 2:48 am

That sucks, hoped it would fit. Make no mistake, when the C5 adapter plate is bolted down to the 2-piece manual BH, the structure is strong as an ox. Stronger even than the cast alloy C5 TT interface when bolted down. As far as cracked BH's go that's a no brainer. Avoid them like your mother in law.
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Re: C-5 Bell Housing

Post  robstah on Mon Nov 15, 2010 2:54 am

Well, as mentioned before, it's only 173 new from GMPD. I'll go that way and then run a truck starter. At least it didn't hurt me too bad, especially if I would be forced to run an expensive starter in there with the auto BH.

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Re: C-5 Bell Housing

Post  xschop on Mon Nov 15, 2010 3:00 am

No diggity. Another internet "fact" debunked. You can sell it off to the LT1 crowd running a 153T FW

Better yet, send it over to Renegade and tell them it's for a Big Block Razz
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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 12:26 pm

Hey Robstah, what is the Auto BH inner diameter near flywheel teeth? and how far does your clutch setup go inside before it touches the inner wall?
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Re: C-5 Bell Housing

Post  v8carreragts on Tue Nov 16, 2010 4:44 pm

If you are using this on an LT (or Gen I for that matter) this makes sense. In order for the bellhousing to sit in the correct relationship with the PP it needs to be spaced away from the block. GM Performance Parts makes an adapter to use the late auto transmissions on the LT and Gen I which includes a bellhousing spacer. The flywheel is recessed further into the block on the LS than the LT and Gen I.
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 5:11 pm

Here are the pictures:

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There is about a whole cm worth of space between the counter and the bellhousing. You can see where it scrapes the PP. A lot of that has to do with the lack of roundness with the auto BH. It's not perfectly round.

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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 5:22 pm

Debunked.
Are you sure the FW is centered in relation to the auto BH there?

Edit: the LS flywheel sits further OUT than the LT flywheel, Thanks V8......

So the Auto BH on the LS engine with a 12" clutch is NO GO!
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 5:44 pm

Yup, I centered it up a couple times actually. Also, looking at my block, the crankshaft clearly sits past the BH mounting points. If anything, mounting it on the engine would make the situation even worse.

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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 5:47 pm

And to clarify, you mean the LS crankshaft/flywheel mating surface relation to the LS block/C5 bellhousing mating surface?
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 5:52 pm

Yes.

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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 6:03 pm

Just like my iron-block 5.3 truck engine.
Now since I never saw the old board posts (PORH), why is it that the SBC/LT1 swaps with the C5 BH require a shorter (by 0.40") pilot bearing adapter?
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 6:06 pm

Speaking of pilot bearings, got a link to your updated dimension one? I still need to order one.

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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 6:08 pm

Are you using my C5 adapter plate? (it's CNC marked C5-944) It is machined 0.615 thick....
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 6:11 pm

Yup. I believe it was one of your firsts.

EDIT: Actually just measured with my digital caliper and it's at .600"? The top has C5 and then 944 marked.


Last edited by robstah on Tue Nov 16, 2010 6:13 pm; edited 1 time in total

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Re: C-5 Bell Housing

Post  xschop on Tue Nov 16, 2010 6:13 pm

If you got one of my C5 plates you should have a 1.00" tall 944 pilot adapter. It's always been the same. I have it in my swap with the C5 2-piece BH at 5.87" depth. I also haven't seen anyone mic the depth of the 944 Auto BH to confirm it matches the C5 2-piece depth. Stranger things have happened over on cricketville LOL.


Last edited by xschop on Tue Nov 16, 2010 6:16 pm; edited 1 time in total
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Re: C-5 Bell Housing

Post  robstah on Tue Nov 16, 2010 6:16 pm

I've got the 1" adapter, but I need the bearing itself. Apparently you are running a thicker one now? I am curious about the exact one you bought.

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Re: C-5 Bell Housing

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