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Author
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Topic: 429 CJ or SCJ?
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Fastback68
Gearhead Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-05-2002 10:26 AM
   
Guys, I have spent most of the day scouring the web, hoping I could solve this without bothering you, but when push comes to shove, M&M delivers!!!!! I'm about to buy a 429 from a '70 T-bird, and it has D0VE-A on the block above the starter. I've figured out that this is a '70 429, but is it a Cobra Jet or a Super Cobra Jet? There's no sign of "PI", so I'm told it's not a Police Interceptor. If you come through for me on this, it proves we are streets ahead of the T-Bird guys 
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Moneymaker
Administrator Posts: 18092
From: Lyons, IL, USA
Registered: May 99
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posted 04-05-2002 11:06 AM
It's not an SCJ for certain. ALL SCJ's had 4 bolt mains. It is probably a 429 Thunderjet 360 HP LM/T-bird/LTD engine which is almost the same as the CJ.  ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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Rory McNeil
Gearhead Posts: 1022
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 04-05-2002 11:58 AM
It is a standard 429 "ThunderJet". The 429CJ,SCJ use head casting # D0OE-R, with larger valves & ports. The CJ used a Rochester Quadrajet, while the SCJ used a Holley 780. Your Tbird engine will most likely have a Motorcraft 4300 carb. Actually, the 69-70 429 4 barrel base engine was pretty good, it had 10.5 compression, & was rated at 360 optimistic HP. I used to have a 1970 Mercury Marquis Broughm, with the 429 4v, & despite weighing over 4500 lbs, it ran quite strong. ------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
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Fastback68
Gearhead Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-05-2002 03:48 PM
Thanks guys. It does indeed have the Motorcraft carb. 360 HP will do me fine
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Fastback68
Gearhead Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-05-2002 08:21 PM
Just me again. Here at the FoMoCo website they have an "Obsolete Engines Textbook" ...
http://www.fomoco.com/index.asp?Dept=4&Tool=0
... but all the 429s are designated as CJ or SCJ except the Boss 429 (HO). Is the Thunderjet missing for some reason?
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Rory McNeil
Gearhead Posts: 1022
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 04-06-2002 02:38 AM
That is likely because that is a Mustang site, & the "thunderJet" (engine code "N") was never offered in a Mustang, only in big cars, as well as 70-71 Torino/Cyclones.The 429 CJ,SCJ were available in Mustangs only in 71, the Boss 429 in 69&70. Hope this clears things up for you.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
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Fastback68
Gearhead Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-06-2002 04:14 AM
Thanks again! Last question ... There shouldn't be any problems fitting this into a '72 Mach 1, should there? I'm planning on buying the 429/C6 and engineless Stang at the same time. I mean, it's the same 460 block as the other 429's isn't it?
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bluetech
Gearhead Posts: 252
From: Far and Away
Registered: Feb 2001
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posted 04-06-2002 10:37 AM
Simon:You should not encounter any problems fitting that engine into a '72. A 429 was available on a 71 Mustang(if I'm not mistaken) which is same body as the '72. Good Luck and Regards. Ed
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bluetech
Gearhead Posts: 252
From: Far and Away
Registered: Feb 2001
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posted 04-06-2002 10:42 AM
BTW, any plans of building that engine for the North Harbor Drag Strip You should really visit it one time. My son, Miko, goes there frequently and says that he's tired and annoyed by all of those Hondas!!! C'mon Simon, let's show them some muscle Fee for using the tracks is only US$30. I say we give it a shot.
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Bob429
Gearhead Posts: 289
From: Watervliet,MI,USA
Registered: Jun 99
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posted 04-12-2002 10:21 PM
Wow Skip out for a while and I find a good question hopefully not too late. A DOVE-A
Block is the correct casting for a 429 CJ/SCJ. It should be a 4 bolt Main. ALL 1971
CJ and SCJ mustangs had 4 bolt main blocks. The two bolt main block was used in 1970 with a casting number C9VE-A Which is also a CJ Block was in the torino. The Police interceptor also used the Dove-A 4 Bolt Block in 70-71. I have heard of but have never seen a 2 bolt Dove-A Block. The only way to tell For sure is to pull the pan. The CJ Block also has thicker webbing than the standard block. The differences between the Dove-a CJ And SCJ Engines was in the internals- the block was the same. The engine will fit into the 72 with no problem providing you have the correct mounts. ------------------
Bob
Member#39
71 J code
429 SCJ-R Sportsroof
C6 4:11 [This message has been edited by Bob429 (edited 04-12-2002).]
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Fastback68
Gearhead Posts: 1272
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 04-13-2002 08:31 AM
Wow Bob! What you're saying doesn't exactly jive with what other people have told me (here and elsewhere), but you've got me excited all right! I was already convinced it was a Thunderjet. But the engine will be delivered to my place in a week, then it's up on the stand and off with the pan. I'll make sure to let y'all know what I find.
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bluetech
Gearhead Posts: 252
From: Far and Away
Registered: Feb 2001
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posted 04-13-2002 11:57 AM
quote:
Originally posted by Fastback68:
But the engine will be delivered to my place in a week, then it's up on the stand and off with the pan.
You really have to move out that Mopar engine to reclaim valuable space [This message has been edited by bluetech (edited 04-13-2002).]
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460-67Stang
Gearhead Posts: 184
From: Southern Ohio, USA
Registered: Feb 2001
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posted 04-16-2002 10:34 PM
Fastback68,
The "Thunderjet" 429 engines were powerhouses. I ran a '68 Thunderjet (first year produced) and it's matched C6 which I pulled from a '68 T-Bird, in my '67 coupe for a while. It ran super. I swapped a 460 crank and am still running it today, but as a 460. The earlier Thuderjet series engines had lower deck heights and higher compression than the later 429's. If you can get a Thunderjet engine, do so. Be sure to grind away the thermactor "thumbs' in the exhaust ports. They were cast for emission control and weren't used till later years. Removing these will get you a few extra horses.
Brian ------------------
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472ci in a '67 Coupe
472ci-67mustang.com http://www.geocities.com/slariviere/460-67Stang.html
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