GMC 305 V6 Rebuild with pics - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Shaky · 12-03-2010, 04:55 PM

Quote:

Originally Posted by 1LOW4X4

I called my machinist and he got pretty excited when I spoke of the engine. He's usually a pretty serious guy and only talks when he needs to, but he was like "I havent seen one of them in 15 years"! lol

You found the right guy.

GMR-PERFORMANCE · 12-03-2010, 04:58 PM

Looks like is spun a rod bearing, which means that rod will need work and more than likely the crank as well. Rods spinning a bearing no big deal crank spin a main that gets to be pricey as a line bore is needed etc. Make sure you number the rods and rods caps, as well the mains ...do not mix them up. As well I have found that a digital camera rocks for things like this you cannot take too many pictures. Looking good, I would not do any machine work or buy any parts until block is magnafluxed maybe even the heads as well... I do not think parts are going to be easy to find so take your time.

*1LOW4X4* · 12-03-2010, 05:01 PM

Oh believe me I have more pics than youd want to see. I used my customary way (way I was taught) of marking the side of the rod cap with a punch, and then the same side of the rod, that way number of dots and sides match up. But then I was happy to see that they are factory marked; on one side of the rod and cap it has a number stamped. Pretty cool.

The rod is going to need work and the crank is going to need a lot of work

duallyjams · 12-05-2010, 09:40 AM

You have two good threads going on this.

*GMC4wheels71* · 03-26-2011, 02:25 AM

How's this coming? Any updates?

duallyjams · 03-26-2011, 08:14 AM

The account has been suspended so until that is resolved there will be no updates.

*GMC4wheels71* · 03-26-2011, 12:42 PM

I didn't notice that. What a shame.

Maybe an admin will pop in and let us know what's what. Maybe it just needs downgrading to a regular account?

KIC · 07-15-2011, 10:56 PM

Wish this would have continued since my V-6 will be getting some attention sometime soon..

NorthstarGMC · 11-08-2011, 02:24 AM

This thread gets a lot of traffic so I thought I would post this up here:

305E rebuild specs:
Piston clearance .0027 - .0033
Compression ring end gap .017
Oil ring end gap .015
Wristpin Diameter 1.24
Rod bearing shaft diameter 2.8107 - 2.8117
Rod bearing clearance .0015 -.004
Main bearing shaft diameter 3.123 - 3.124
Rear main shaft bearing diameter 3.1225 -3.1235
Main bearing clearance .002 -.005
Rear Main bearing clearance .0025 - .0055
Thrust bearing on #3

FetchMeAPepsi · 03-16-2012, 01:45 PM

This thread gets alot of traffic because it was a great idea. If he just needs reupping his sub to the site I'd be happy to chip in to see some progress.

1Low4x4 - If you're on here by another name and need some $$ for this account to be re-enabled PM me and I'll get you back on track.

**Corts60** · 03-16-2012, 04:02 PM

Quote:

Originally Posted by FetchMeAPepsi

This thread gets alot of traffic because it was a great idea. If he just needs reupping his sub to the site I'd be happy to chip in to see some progress.

1Low4x4 - If you're on here by another name and need some $$ for this account to be re-enabled PM me and I'll get you back on track.

Wow, super nice offer. I don't think the mod's suspend accounts for just not re-upping do they? I figured they would just downgrade the account automatically.

ahaynes106 · 03-30-2014, 10:22 AM

Quote:

Originally Posted by FetchMeAPepsi

This thread gets alot of traffic because it was a great idea. If he just needs reupping his sub to the site I'd be happy to chip in to see some progress.

1Low4x4 - If you're on here by another name and need some $$ for this account to be re-enabled PM me and I'll get you back on track.

Hey Fetch. Looks like the rest of the story can be found on this forum...
http://www.truckmodcentral.com/forum...mething-12884/

12-03-2010, 04:58 PM	#27
GMR-PERFORMANCE Registered User Join Date: Aug 2010 Location: Keller TX Posts: 836	Re: GMC 305 V6 Rebuild with pics Looks like is spun a rod bearing, which means that rod will need work and more than likely the crank as well. Rods spinning a bearing no big deal crank spin a main that gets to be pricey as a line bore is needed etc. Make sure you number the rods and rods caps, as well the mains ...do not mix them up. As well I have found that a digital camera rocks for things like this you cannot take too many pictures. Looking good, I would not do any machine work or buy any parts until block is magnafluxed maybe even the heads as well... I do not think parts are going to be easy to find so take your time. Last edited by GMR-PERFORMANCE; 12-03-2010 at 05:00 PM.

12-03-2010, 05:01 PM	#28
1LOW4X4 Account Suspended Join Date: Jul 2010 Location: Southeast Texas Posts: 189	Re: GMC 305 V6 Rebuild with pics Oh believe me I have more pics than youd want to see. I used my customary way (way I was taught) of marking the side of the rod cap with a punch, and then the same side of the rod, that way number of dots and sides match up. But then I was happy to see that they are factory marked; on one side of the rod and cap it has a number stamped. Pretty cool. The rod is going to need work and the crank is going to need a lot of work

12-05-2010, 09:40 AM	#29
duallyjams Registered User Join Date: May 2007 Location: Deale Md Posts: 4,663	Re: GMC 305 V6 Rebuild with pics You have two good threads going on this. __________________ James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change!

03-26-2011, 02:25 AM	#30
GMC4wheels71 Account Suspended Join Date: Mar 2011 Location: Norman OK Posts: 67	Re: GMC 305 V6 Rebuild with pics How's this coming? Any updates? Last edited by GMC4wheels71; 03-26-2011 at 02:26 AM.

03-26-2011, 08:14 AM	#31
duallyjams Registered User Join Date: May 2007 Location: Deale Md Posts: 4,663	Re: GMC 305 V6 Rebuild with pics The account has been suspended so until that is resolved there will be no updates. __________________ James 63 GMC V6 4speed carryall 65 chevy swb bbw V8 auto 68 K20 327/4 speed, buddy buckets 2002 GMC CC Dually Duramax 64 GMC lwb 3/4 V6 4speed SOLD 66 GMC swb bbw buddy buckets SOLD IG duallyjams The only thing that stays the same is constant change!

03-26-2011, 12:42 PM	#32
GMC4wheels71 Account Suspended Join Date: Mar 2011 Location: Norman OK Posts: 67	Re: GMC 305 V6 Rebuild with pics I didn't notice that. What a shame. Maybe an admin will pop in and let us know what's what. Maybe it just needs downgrading to a regular account?

07-15-2011, 10:56 PM	#33
KIC 1960 GMC Burb Join Date: Jan 2008 Location: Arizona Posts: 385	Re: GMC 305 V6 Rebuild with pics Wish this would have continued since my V-6 will be getting some attention sometime soon.. __________________ 1960 GMC Suburban 1/2 ton V-6 2nd generation original owner 60 Burb Build thread: http://67-72chevytrucks.com/vboard/s...=1960+Suburban 60 to 66 Burbs only Thread: http://67-72chevytrucks.com/vboard/s...ighlight=burbs 2003 Tahoe LT

11-08-2011, 02:24 AM	#34
NorthstarGMC Registered User Join Date: Jul 2011 Location: Michigan Posts: 44	Re: GMC 305 V6 Rebuild with pics This thread gets a lot of traffic so I thought I would post this up here: 305E rebuild specs: Piston clearance .0027 - .0033 Compression ring end gap .017 Oil ring end gap .015 Wristpin Diameter 1.24 Rod bearing shaft diameter 2.8107 - 2.8117 Rod bearing clearance .0015 -.004 Main bearing shaft diameter 3.123 - 3.124 Rear main shaft bearing diameter 3.1225 -3.1235 Main bearing clearance .002 -.005 Rear Main bearing clearance .0025 - .0055 Thrust bearing on #3 __________________ 1963 GMC Wideside powered by a LH2 32v Northstar

03-16-2012, 01:45 PM	#35
FetchMeAPepsi Registered User Join Date: Apr 2011 Location: Edmond, Ks Posts: 595	Re: GMC 305 V6 Rebuild with pics This thread gets alot of traffic because it was a great idea. If he just needs reupping his sub to the site I'd be happy to chip in to see some progress. 1Low4x4 - If you're on here by another name and need some $$ for this account to be re-enabled PM me and I'll get you back on track.



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