502 big block? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CoreyK · 12-10-2007, 11:34 AM

Has anyone put a 502 big block in there 67-72 chevy? I have a 70' k10 that i want to put a big block in. i have a chance to get a 502 right now but can't find a decent priced 454 to buy and put in. How much harder is it to stuff a 502 in there? thanks

xBabyJesus · 12-10-2007, 11:41 AM

Same as a 454. I'm putting a ZZ502 in my '69 SWB

J

Rooster's 67 · 12-10-2007, 11:42 AM

externally the demensions are the same as the BBC cause it is a BBC.

CoreyK · 12-10-2007, 11:47 AM

Thank you for the fast reply's, i had a feeling they wont be about the same because they are both BBC's.

sick69 · 12-10-2007, 11:49 AM

All the big blocks have the same outside dimensions and all the small blocks have the same outside dimensions. It's the crank,rods,pistons and cylinder bore that changes to make the different sized engines.

If you have room for a 396 then you have room for a 402,427,454,502,576
same goes for the small blocks. If a 283 will fit then so will a 305,307,327,350,400 or any combination of each family.

So to answer your question,,, Yes a 502 will fit.

Frank

bowtieboy93 · 12-10-2007, 12:11 PM

im planning to put a ZZ502 in as well. for hp and tq you cant beat the price!!!
lets just say i know someone who it cost 10k to build a 400 hp 350 so its well worth it

**Ron 586** · 12-10-2007, 12:21 PM

Who has the best price on a crate 502?

bowtieboy93 · 12-10-2007, 12:26 PM

for price everyones pretty much the same
Disassembled :$7,799.99
Assembled :$8,076.99
plus carb, intake, distributor, wires, water pump, and headers
but you still cant beat it!
and you get a warranty

jhow66 · 12-10-2007, 01:42 PM

Here's my 502HO in my '71:

CoreyK · 12-10-2007, 01:59 PM

How much did you have to modify the firewall in your 71'?

71Chevy4-speed · 12-10-2007, 02:15 PM

Quote:

Originally Posted by bowtieboy93

im planning to put a ZZ502 in as well. for hp and tq you cant beat the price!!!
lets just say i know someone who it cost 10k to build a 400 hp 350 so its well worth it

Seems like your questions was answered if it will fit but I have one now. Who do you know that spent 10K on a 400hp 350 and how did they accomplish that? No offense but thats just stupid or they built it about 3 times? I could see 10K on 550hp pump gas 7000 rpm 350.

yoyokidss · 12-10-2007, 02:20 PM

i just spend $3200 on a rebuild on my 350.. new everthing besides a crank and ablock... 375hp so $6800more gives me 25hp sweet.. lol i cant see it.

bowtieboy93 · 12-10-2007, 03:19 PM

Quote:

Originally Posted by 71Chevy4-speed

Seems like your questions was answered if it will fit but I have one now. Who do you know that spent 10K on a 400hp 350 and how did they accomplish that? No offense but thats just stupid or they built it about 3 times? I could see 10K on 550hp pump gas 7000 rpm 350.

yeah, its was a little darastic, but this guy is doing this car right and thats the whole motor done with a LOT of chrome

68racer · 12-10-2007, 04:17 PM

I put a 502 on to the L6 stands, I beefed them up and used later type mounts. I had to cut the firewall on the drivers side, it's real close on the passenger side. I had to use a MSD distributor to clear also.

71Chevy4-speed · 12-10-2007, 04:22 PM

Quote:

Originally Posted by bowtieboy93

yeah, its was a little darastic, but this guy is doing this car right and thats the whole motor done with a LOT of chrome

That'll do it. To each his own I guess, everyone has there opinion of done right, more of a paint and as cast aluminum guy myself, cheap, clean and mean.

**70cst** · 12-10-2007, 04:30 PM

Quote:

Originally Posted by bowtieboy93

lets just say i know someone who it cost 10k to build a 400 hp 350 so its well worth it

WOW $10,000 for a 350 I'm spending about $4000-$5,000 for a complete 402BB/350-375hp rebuild and I thought that was high.

jhow66 · 12-10-2007, 08:10 PM

Quote:

Originally Posted by CoreyK

How much did you have to modify the firewall in your 71'?

None. It came from factory with BB 402 (this is a 2 wheel drive PU).

'71c204x4454 · 12-10-2007, 11:04 PM

Just so you know there is quite a few people on here that put big blocks in 4x4's. We've all run into little problems. Some not much at all. But don't be surprised to have to modify the firewall or some poeple have used body lifts for valve cover clearance and some are able to fit HEI but it wouldn't fit for me. I used 2wd exhaust manifolds for '71 BB and just had to shave some nubs but fit well. If you have any specific question just ask. Someone on here has run it to it before.

**Yukon Jack** · 12-12-2007, 10:37 AM

Jump over to the 4x4 subforum and you will find some old posts about putting bbc's in the 67-72 4wd's.

Ackattack · 12-12-2007, 01:03 PM

Isn't there a Tall Deck BBC like the 572 and certain Truck 427s?

albertarose · 12-12-2007, 01:09 PM

[IMG]http://render1.snapfish.com/render2/is=Yup6lQQ%7C%3Dup6RKKt%3Axxr%3D0-qpDofRt7Pf7mrPfrj7t%3DzrRfDUX%3AeQaQxg%3Dr%3F87KR6xqpxQQnPxPGoxenexv8uOc5xQQQGQQoelJJlaqpfVtB%3F*KUp 7BHSHqqy7XH6gX0QQ0l%7CRup6aQQ%7C/of=50,332,442[/IMG]

webfoot · 12-12-2007, 01:16 PM

Quote:

Originally Posted by Ackattack

Isn't there a Tall Deck BBC like the 572 and certain Truck 427s?

Yes, and there is also a 366 that is a tall deck block.

albertarose · 12-12-2007, 01:22 PM

look

retodd7711 · 12-12-2007, 03:22 PM

Strangest looking injection system I have ever seen.

webfoot · 12-12-2007, 03:25 PM

Is dog piss high in octane?

12-10-2007, 11:34 AM	#1
CoreyK Registered User Join Date: Oct 2007 Location: Connecticut Posts: 18	502 big block? Has anyone put a 502 big block in there 67-72 chevy? I have a 70' k10 that i want to put a big block in. i have a chance to get a 502 right now but can't find a decent priced 454 to buy and put in. How much harder is it to stuff a 502 in there? thanks

12-10-2007, 11:41 AM	#2
xBabyJesus Registered User Join Date: Jan 2005 Location: Monroe, WA Posts: 6	Re: 502 big block? Same as a 454. I'm putting a ZZ502 in my '69 SWB J

12-10-2007, 11:42 AM	#3
Rooster's 67 Registered User Join Date: Sep 2003 Location: DFW Posts: 765	Re: 502 big block? externally the demensions are the same as the BBC cause it is a BBC. __________________ The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself?

12-10-2007, 11:47 AM	#4
CoreyK Registered User Join Date: Oct 2007 Location: Connecticut Posts: 18	Re: 502 big block? Thank you for the fast reply's, i had a feeling they wont be about the same because they are both BBC's.

12-10-2007, 11:49 AM	#5
sick69 Registered User Join Date: Sep 2006 Location: colorado springs colorado Posts: 737	Re: 502 big block? All the big blocks have the same outside dimensions and all the small blocks have the same outside dimensions. It's the crank,rods,pistons and cylinder bore that changes to make the different sized engines. If you have room for a 396 then you have room for a 402,427,454,502,576 same goes for the small blocks. If a 283 will fit then so will a 305,307,327,350,400 or any combination of each family. So to answer your question,,, Yes a 502 will fit. Frank __________________ 70 chevy lwb c10 454/th400 and a 9" rearend suicide doors, marker light fuel fill, 4" cowl , mini tub Last edited by sick69; 12-10-2007 at 11:54 AM.

12-10-2007, 12:11 PM	#6
bowtieboy93 Registered User Join Date: Feb 2007 Location: (Cloverdale) Surrey BC Canada Posts: 1,566	Re: 502 big block? im planning to put a ZZ502 in as well. for hp and tq you cant beat the price!!! lets just say i know someone who it cost 10k to build a 400 hp 350 so its well worth it __________________ Travis travis_moffatt@hotmail.com 1969 Chevrolet C-10 LWB, 350c.i., TH350, In Pieces. 1991 GMC Sonoma, IROCS s10 grill 1963 Ford Galaxie 351/C4

12-10-2007, 12:21 PM	#7
Ron 586 RIP Mr Ron Join Date: Dec 2005 Location: Big Sandy, Tn. 38221 Posts: 8,150	Re: 502 big block? Who has the best price on a crate 502? __________________ Ron (Mr Round Tuit) Be kinder than necessary, for everyone you meet is fighting some kind of battle TN Message Forum TN Facebook Group SETN Truck Show My Photobucket

12-10-2007, 12:26 PM	#8
bowtieboy93 Registered User Join Date: Feb 2007 Location: (Cloverdale) Surrey BC Canada Posts: 1,566	Re: 502 big block? for price everyones pretty much the same Disassembled :$7,799.99 Assembled :$8,076.99 plus carb, intake, distributor, wires, water pump, and headers but you still cant beat it! and you get a warranty __________________ Travis travis_moffatt@hotmail.com 1969 Chevrolet C-10 LWB, 350c.i., TH350, In Pieces. 1991 GMC Sonoma, IROCS s10 grill 1963 Ford Galaxie 351/C4 Last edited by bowtieboy93; 12-10-2007 at 12:28 PM.

12-10-2007, 01:42 PM	#9
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: 502 big block? Here's my 502HO in my '71: Attached Images __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

12-10-2007, 01:59 PM	#10
CoreyK Registered User Join Date: Oct 2007 Location: Connecticut Posts: 18	Re: 502 big block? How much did you have to modify the firewall in your 71'?

12-10-2007, 02:20 PM	#12
yoyokidss Registered User Join Date: Feb 2007 Location: Gramercy,Louisiana Posts: 120	Re: 502 big block? i just spend $3200 on a rebuild on my 350.. new everthing besides a crank and ablock... 375hp so $6800more gives me 25hp sweet.. lol i cant see it.

12-10-2007, 04:17 PM	#14
68racer Yeah baby! Join Date: Feb 2001 Location: United Kingdom Posts: 436	Re: 502 big block? I put a 502 on to the L6 stands, I beefed them up and used later type mounts. I had to cut the firewall on the drivers side, it's real close on the passenger side. I had to use a MSD distributor to clear also.

12-10-2007, 11:04 PM	#18
'71c204x4454 '71k204x4454 Join Date: Jan 2004 Location: Hood River Or. Posts: 137	Re: 502 big block? Just so you know there is quite a few people on here that put big blocks in 4x4's. We've all run into little problems. Some not much at all. But don't be surprised to have to modify the firewall or some poeple have used body lifts for valve cover clearance and some are able to fit HEI but it wouldn't fit for me. I used 2wd exhaust manifolds for '71 BB and just had to shave some nubs but fit well. If you have any specific question just ask. Someone on here has run it to it before. __________________ 1971 K20 4x4 1964 buick skylark convertible

12-12-2007, 10:37 AM	#19
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: 502 big block? Jump over to the 4x4 subforum and you will find some old posts about putting bbc's in the 67-72 4wd's. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

12-12-2007, 01:03 PM	#20
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	Re: 502 big block? Isn't there a Tall Deck BBC like the 572 and certain Truck 427s? __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index



Register or Log In To remove these advertisements.

12-12-2007, 01:09 PM	#21
albertarose Registered User Join Date: Dec 2005 Location: alberta canada Posts: 162	Re: 502 big block? [IMG]http://render1.snapfish.com/render2/is=Yup6lQQ%7C%3Dup6RKKt%3Axxr%3D0-qpDofRt7Pf7mrPfrj7t%3DzrRfDUX%3AeQaQxg%3Dr%3F87KR6xqpxQQnPxPGoxenexv8uOc5xQQQGQQoelJJlaqpfVtB%3FKUp 7BHSHqqy7XH6gX0QQ0l%7CRup6aQQ%7C/of=50,332,442[/IMG] Attached Images Last edited by albertarose; 12-12-2007 at 01:19 PM.*

12-12-2007, 01:22 PM	#23
albertarose Registered User Join Date: Dec 2005 Location: alberta canada Posts: 162	my dog can do it! look Attached Images

12-12-2007, 03:22 PM	#24
retodd7711 chrome makes it go FASTER! Join Date: Feb 2007 Location: Cleveland Tennessee Posts: 2,884	Re: 502 big block? Strangest looking injection system I have ever seen. __________________ She can't cook and she won't clean. But she looks good in a skirt and she brings me beer. She can stay for now. EDIT:: But she left me anyway, So forget her. 1962 GMC Stepside V6 4 speed My rolling resto thread http://67-72chevytrucks.com/vboard/s...d.php?t=324226 My old farm truck http://67-72chevytrucks.com/vboard/s...=1#post3465005

12-12-2007, 03:25 PM	#25
webfoot Registered User Join Date: Nov 2007 Location: Hermiston, OR Posts: 947	Re: 502 big block? Is dog piss high in octane? __________________ *Running in place gets you nowhere fast.* -me 1968 GTO 4-spd covnvertible 1970 K-20 4-speed, factory AC.

Register or Log In To remove these advertisements.