72' 402 BB rebuild - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gvw5400 · 04-24-2016, 08:37 PM

Great idea about swinging a used 454 and building the 402 correctly when time and money are better. Good luck, and I hope you have good solid work soon!
Just remember to do things right BUT don't get too freaked out about a $7000.00
Rebuild. Your rebuilding a BBC not a Full Race ZL-1.
All the Best , Dirk

davepl · 04-25-2016, 11:46 AM

Must be sub-sub-stations then :-)

57taskforce · 04-25-2016, 06:33 PM

Quote:

Originally Posted by davepl

Must be sub-sub-stations then :-)

There are 8.1s down here in the San Juan basin, but not to many. The company I work for mainly uses Ajax,arrow, 5.9 cummins, and Waukesha engines. We use Ajax, ingersol, and Quincy compressors.

PIG-TECH · 04-25-2016, 10:49 PM

the 454 i looked at today had 96,000 miles and was attached to a rusted out 91'chevy dually for $2300. i passed on it. tore the top half of my engine this evening to get a head start, incase i do not find a local engine in the next couple days. got to have my truck running early next week. i have a siding job to start and it would not lookto good if i show up with my ladders tied to my wife's car lol

PIG-TECH · 04-25-2016, 11:06 PM

cly. walls look very good i think, but the piston heads look like they have a lot of carbon buildup? what do you think? plus i found a some type of rag in the coolant area. all the push rods and lifters look good

MARKDTN · 04-26-2016, 07:06 AM

Looks like an OK builder, but there is no way to do a quality rebuild in less than a week.

Coley · 04-25-2016, 12:06 PM

Count me in on the idea of finding a good running 454 and putting that in it....
As stated, these can be picked up pretty inexpensively...often with the TH400 still attached.
Make sure you check it out tho'...maybe a quick compression test?
Keep us posted on how the search is going.

All Good
Coley

davepl · 04-26-2016, 01:08 PM

What are you going to do, clean and new bearings, or what's the actual plan besides removing the rag (!) someone left in the valley?

davepl · 04-27-2016, 12:20 PM

How does one go about finding a motor that can be cleaned up, maybe the ridge knocked off, but small enough taper that it can be deglazed rather than bored out?

No idea myself, so asking. But I've come across a couple of my own, so it can't be uncommon. I guess they're already apart?

04-24-2016, 08:37 PM	#1
gvw5400 Registered User Join Date: May 2013 Location: Colorado Rocky Mountains Posts: 263	Re: 72' 402 BB rebuild Great idea about swinging a used 454 and building the 402 correctly when time and money are better. Good luck, and I hope you have good solid work soon! Just remember to do things right BUT don't get too freaked out about a $7000.00 Rebuild. Your rebuilding a BBC not a Full Race ZL-1. All the Best , Dirk

04-25-2016, 11:46 AM	#2
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 72' 402 BB rebuild Must be sub-sub-stations then :-) __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

04-25-2016, 10:49 PM	#4
PIG-TECH Registered User Join Date: Jun 2015 Location: weirton WV Posts: 76	Re: 72' 402 BB rebuild the 454 i looked at today had 96,000 miles and was attached to a rusted out 91'chevy dually for $2300. i passed on it. tore the top half of my engine this evening to get a head start, incase i do not find a local engine in the next couple days. got to have my truck running early next week. i have a siding job to start and it would not lookto good if i show up with my ladders tied to my wife's car lol

04-25-2016, 11:06 PM	#5
PIG-TECH Registered User Join Date: Jun 2015 Location: weirton WV Posts: 76	Re: 72' 402 BB rebuild cly. walls look very good i think, but the piston heads look like they have a lot of carbon buildup? what do you think? plus i found a some type of rag in the coolant area. all the push rods and lifters look good Attached Images

04-26-2016, 07:06 AM	#6
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,144	Re: 72' 402 BB rebuild Looks like an OK builder, but there is no way to do a quality rebuild in less than a week. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

04-25-2016, 12:06 PM	#7
Coley Registered User Join Date: Oct 2011 Location: Victoria, B.C Posts: 3,794	Re: 72' 402 BB rebuild Count me in on the idea of finding a good running 454 and putting that in it.... As stated, these can be picked up pretty inexpensively...often with the TH400 still attached. Make sure you check it out tho'...maybe a quick compression test? Keep us posted on how the search is going. All Good Coley __________________ ....for some men, there is experience, skill and effort....for the others...there is visa and UPS LOL 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax 2000 Dodge Ram 1500

04-26-2016, 01:08 PM	#8
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 72' 402 BB rebuild What are you going to do, clean and new bearings, or what's the actual plan besides removing the rag (!) someone left in the valley? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

04-27-2016, 12:20 PM	#9
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: 72' 402 BB rebuild How does one go about finding a motor that can be cleaned up, maybe the ridge knocked off, but small enough taper that it can be deglazed rather than bored out? No idea myself, so asking. But I've come across a couple of my own, so it can't be uncommon. I guess they're already apart? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

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