502bb - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RVFR · 01-09-2007, 09:23 PM

Was curious, has anyone here done the 502 swap? if so whats your thoughts on it? was it worth it? anything you would have done different? just pondering the idea vs rebuild what I have.

Brad · 01-09-2007, 10:32 PM

Someone on the board that actually lives in your neighborhood has done it. I can't remember who it was though. He got his from Sallee and had some problems, but I think he got them all worked out.

brak · 01-09-2007, 10:40 PM

Longhorn Man is running a caddy 500.

I used to have a 1970 Cadillac Deville, with that motor, and it was awesome. I should've pulled the motor when i sold the car

FarmTruk · 01-09-2007, 10:49 PM

RVFR...I don't remember the thread, but a board member put one into a 'burb build-up. I think 502RJ is an EXCELLENT choice for motor-vation.

Bob Moore · 01-10-2007, 04:11 PM

A 502 is going in my "67 GMC" shorty. I don't expect any problems different from anyother BB. If you want to look "original" be prepared to spend some $$$$ as short waterpump brackets are expensive. My 67 C20 with 454 has the long pump and clearance to the radiator/fan is tight.

Holler if you have specific questions.

Good luck - Bob

RVFR · 01-10-2007, 04:34 PM

Quote:

Originally Posted by FarmTruk

RVFR...I don't remember the thread, but a board member put one into a 'burb build-up. I think 502RJ is an EXCELLENT choice for motor-vation.

Now this is what I'm talking about. Nice, wonder thou if it's worth the wiring hassle for the FI? Hmmm

Funny was at the Chev garage yesterday and what is in the shop, ha a 69 camero with a fresh new just out of the crate 572 in it, the owner of the car was letting the chev garage do the install can we say $$$$$$ still 600HPs on stock exhaust manifolds too. ooooeeeee ****, wheres the camera when you need it..

PanelDeland · 01-10-2007, 05:15 PM

RVFR,I wouldn't sweat the wiring.From all the descriptions I've read the FI for the "Ram Jet" engines is plug and play.You just need a power wire and the rest is a standard motor swap.I haven't done one but from all the literature I've seen it seems like it would be easier than dialing in an ignition/Carb set-up.Try searching www.scogginsdickeyperformance.com or some other GM performance dealer.You might also try GM performance parts.

71chevylowrider · 01-10-2007, 05:34 PM

There's a guy on this board with I think, a beautiful black 72 cheyenne with a 502 in it.

71chevylowrider · 01-10-2007, 05:43 PM

The guy with the 502 is jhow66 & here's a link that shows big block trucks his is about halfway down the page it's a bada$$ black truck!

http://67-72chevytrucks.com/vboard/s...d.php?t=216339

FarmTruk · 01-10-2007, 06:01 PM

One thing I've heard about the "plug & play" aspect of the FI is...the motor will run in "open loop", ie: no "talkback" from emissions sensors to the FI (or is that "closed loop"

). This could lead to a richer than ideal stachiometric ratio (air/fuel ratio), neccesating more frequent oil changes and greater greenhouse gas pollution. But, if that was a concern, you'd be driving a Toyota Prius, not a BBC !

Now, that being said, there is another board member (gosh...I'm new here and can't remember everyone's name and links) who installed a 350RJ and even hooked up cat converters and O2 sensors to enable the FI to operate in "closed loop" Better fuel mileage, lower emmisions. I can't remember his name, but I applaud his efforts at updating to 21st century technology.

Still, if I had a 502RJ sitting around, I wouldn't worry myself too much about the "open vs. closed" loop issues.

71chevylowrider · 01-10-2007, 06:14 PM

I think this might be the guy & here's a post on his truck with the 350RJ

http://67-72chevytrucks.com/vboard/s...d.php?t=187680

dwaite72lnghrn · 01-10-2007, 08:47 PM

I put the HT502 in my truck. with the OEM water pump and pulleys fit fine. I then put the Serpentine setup on and it is TOO close for stock fan and shroud. The ZZ502 or RJ502 would fit the same. The early RamJet502 was just fuel and power, later Ramjet 502 needs +12v and O2 sensor. You also need the high pressure fuel pump for it.
The OEM wireharness for the BBC works with the HT/ZZ engines.

01-09-2007, 09:23 PM	#1
RVFR New Member Join Date: Jan 2007 Location: Olympia, WA. Posts: 21	502bb Was curious, has anyone here done the 502 swap? if so whats your thoughts on it? was it worth it? anything you would have done different? just pondering the idea vs rebuild what I have.

01-09-2007, 10:32 PM	#2
Brad Out of the carpool lane. Join Date: Jan 2000 Location: Clark Co, WA Posts: 5,672	Re: 502bb Someone on the board that actually lives in your neighborhood has done it. I can't remember who it was though. He got his from Sallee and had some problems, but I think he got them all worked out. __________________ 1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten...

01-09-2007, 10:40 PM	#3
brak Registered User Join Date: Apr 2006 Location: MinneSNOWta Posts: 1,381	Re: 502bb Longhorn Man is running a caddy 500. I used to have a 1970 Cadillac Deville, with that motor, and it was awesome. I should've pulled the motor when i sold the car __________________ 2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill

01-09-2007, 10:49 PM	#4
FarmTruk In Memoriam... Join Date: Nov 2006 Location: Wallburg, NC Posts: 1,216	Re: 502bb RVFR...I don't remember the thread, but a board member put one into a 'burb build-up. I think 502RJ is an EXCELLENT choice for motor-vation. Attached Images __________________ '68 C10 SWB 307ci 2BBL *FarmTruk Pics Here* *"You know, doing what is right is easy. The problem is knowing what is right."*

01-10-2007, 04:11 PM	#5
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Re: 502bb A 502 is going in my "67 GMC" shorty. I don't expect any problems different from anyother BB. If you want to look "original" be prepared to spend some $$$$ as short waterpump brackets are expensive. My 67 C20 with 454 has the long pump and clearance to the radiator/fan is tight. Holler if you have specific questions. Good luck - Bob __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

01-10-2007, 05:15 PM	#7
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: 502bb RVFR,I wouldn't sweat the wiring.From all the descriptions I've read the FI for the "Ram Jet" engines is plug and play.You just need a power wire and the rest is a standard motor swap.I haven't done one but from all the literature I've seen it seems like it would be easier than dialing in an ignition/Carb set-up.Try searching www.scogginsdickeyperformance.com or some other GM performance dealer.You might also try GM performance parts. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

01-10-2007, 05:34 PM	#8
71chevylowrider Senior Member Join Date: Sep 2006 Location: Vancouver, WA Posts: 1,015	Re: 502bb There's a guy on this board with I think, a beautiful black 72 cheyenne with a 502 in it.

01-10-2007, 05:43 PM	#9
71chevylowrider Senior Member Join Date: Sep 2006 Location: Vancouver, WA Posts: 1,015	Re: 502bb The guy with the 502 is jhow66 & here's a link that shows big block trucks his is about halfway down the page it's a bada$$ black truck! http://67-72chevytrucks.com/vboard/s...d.php?t=216339 Last edited by 71chevylowrider; 01-10-2007 at 05:43 PM.

01-10-2007, 06:01 PM	#10
FarmTruk In Memoriam... Join Date: Nov 2006 Location: Wallburg, NC Posts: 1,216	Re: 502bb One thing I've heard about the "plug & play" aspect of the FI is...the motor will run in "open loop", ie: no "talkback" from emissions sensors to the FI (or is that "closed loop" ). This could lead to a richer than ideal stachiometric ratio (air/fuel ratio), neccesating more frequent oil changes and greater greenhouse gas pollution. But, if that was a concern, you'd be driving a Toyota Prius, not a BBC ! Now, that being said, there is another board member (gosh...I'm new here and can't remember everyone's name and links) who installed a 350RJ and even hooked up cat converters and O2 sensors to enable the FI to operate in "closed loop" Better fuel mileage, lower emmisions. I can't remember his name, but I applaud his efforts at updating to 21st century technology. Still, if I had a 502RJ sitting around, I wouldn't worry myself too much about the "open vs. closed" loop issues. __________________ '68 C10 SWB 307ci 2BBL *FarmTruk Pics Here* *"You know, doing what is right is easy. The problem is knowing what is right."* Last edited by FarmTruk; 01-10-2007 at 06:05 PM.

01-10-2007, 06:14 PM	#11
71chevylowrider Senior Member Join Date: Sep 2006 Location: Vancouver, WA Posts: 1,015	Re: 502bb I think this might be the guy & here's a post on his truck with the 350RJ http://67-72chevytrucks.com/vboard/s...d.php?t=187680

01-10-2007, 08:47 PM	#12
dwaite72lnghrn Registered User Join Date: Jun 2002 Location: central pa Posts: 1,525	Re: 502bb I put the HT502 in my truck. with the OEM water pump and pulleys fit fine. I then put the Serpentine setup on and it is TOO close for stock fan and shroud. The ZZ502 or RJ502 would fit the same. The early RamJet502 was just fuel and power, later Ramjet 502 needs +12v and O2 sensor. You also need the high pressure fuel pump for it. The OEM wireharness for the BBC works with the HT/ZZ engines. __________________ 72 longhorn c30 502BB/th400/fact air/4.11rear/ custom camper 72 bug(the better half's) under reconstruction 2009 HHR aqua blue 71 GMC k20 350/sm465 2009 Chevy hd3500 6.6 Victory Red crew cab dually Dave & Jeanne

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