69 w/ 429 CJS HELP!!!!

aug0202 · Jun 18, 2009

alright here it is vin# 9R01F136059 (from the windshield)
1969 Ford Mustang Hardtop
9 Year 1969

R Assembly San Jose, CA

01 Body Mustang 2-Door Hardtop

F Engine 8 Cyl. 302 CID
Horsepower: 220
Carbs: 1-2BBL
Compression: 9.5:1

136059 Serial 136059

now I don't think this is the original engine looking at the valve covers it has 7 bolts vice 6 the fuel pump is WAY to large to be a 302 and the water pump doesn't match I am confused everything I have researched says its a
429 but the chasis vin says its a 302 I can not find any other markings on the block the way it sits. I don't want to start micingout the inside i don't want to tear it down that far!!

2+2GT · Jun 18, 2009

Don't worry about the original engine being a 302 2V. This is a well-known conversion. Even a stone-stock 429 will fly in a 3000 pound Mustang, considering it was intended to move the nearly 5000 pound Thunderbird.

aug0202 · Jun 18, 2009

2+2GT said:
Don't worry about the original engine being a 302 2V. This is a well-known conversion. Even a stone-stock 429 will fly in a 3000 pound Mustang, considering it was intended to move the nearly 5000 pound Thunderbird.

Oh I know IT will fly now I just need to figure out what the hell IT is.

SadbutTrue · Jun 18, 2009

2+2GT said:
That's the 385 Series 429/460 ThunderJet V8 engine, which had a long service life, 68-94. Don't bother looking for a VIN on the engine, if you find it at all it won't be for your car. Nice conversion, though. The only 385 Series ever used in the Mustang was the 71 429CJ and 429SCJ. Look through the windshield at the dash for the VIN. It would be interesting to know what the original engine was.

Boss 429 was a 385-series block (with different heads, still a 385 though) right?

To the OP, the nice thing is there isn't going to be much in the way of 'bad news' that can come from the search into what you've got. 429 or 460, you're still looking at a beast.

2+2GT · Jun 18, 2009

SadbutTrue said:
Boss 429 was a 385-series block (with different heads, still a 385 though) right?

IIRC, there was more to it than a set of BOSS heads.

aug0202 said:
Oh I know IT will fly now I just need to figure out what the hell IT is.

It's either a 429 or 460 Thunder Jet. If the tag on the intake manifold is still there, you're all set. Short of that luck, you'll need to scrape the crud off the casting code on the block. Why? You looking to slap a set of emblems to advertise?

aug0202 · Jun 18, 2009

ok cool kudos to all!!!.

now, with power like that is the drivetrain going to be strong enough? worst case scenario Its stock or oem replacement

2+2GT · Jun 18, 2009

aug0202 said:
ok cool kudos to all!!!. now, with power like that is the drivetrain going to be strong enough? worst case scenario Its stock or oem replacement

Well, it's virtually certain the C6 was retained with the 429, any other trans would have been very difficult to install. The rear axle is another story. You need a 9". And not some crummy 2-pinion job, either. Now you have to crawl under there with a camera. Shoot from in front of the axle, on the right side of the car.

aug0202 · Jun 18, 2009

2+2GT said:
Well, it's virtually certain the C6 was retained with the 429, any other trans would have been very difficult to install. The rear axle is another story. You need a 9". And not some crummy 2-pinion job, either. Now you have to crawl under there with a camera. Shoot from in front of the axle, on the right side of the car.

alright will add another picture tomorrow after work..Thanks again you all are amazing!!!

rebel65 · Jun 18, 2009

460 would be nice :O

Wart · Jun 18, 2009

I would remove the tank and take it to a radiator shop and have it boiled out, or I would just replace the tank.

2+2GT · Jun 19, 2009

Wart said:
I would remove the tank and take it to a radiator shop and have it boiled out, or I would just replace the tank.

Huh?

D.Hearne · Jun 19, 2009

On the rearend, if you can access the two bottom carrier retainer nuts with a 9/16" socket and ratchet, it's an 8" rear. If you can get an end wrench on these nuts, it's a 9" rear. The casting numbers for the heads are located above an exhaust port. Given that the engine looks to be intact and not rebuilt, the casting numbers will give you an idea as to the age of the engine. There should also be a date code cast into the intake, that will do it as well.

oh9mustang · Jun 19, 2009

From Mustang History.

***1970*** - Lee Iacocca is named president of Ford Motor Company - The top Mach I engine for the year, the 428, is replaced by a 429 during model run - Mustang, sans Shelby participation, comes out on top in the Trans Am race season - Model-year Mustang production falls to 190,727, including just 7673 convertibles

429 (not Boss) was put in the 70 Mustangs.

Ford Classics - Mustang Specs

2+2GT · Jun 19, 2009

oh9mustang said:
From Mustang History.

***1970*** - Lee Iacocca is named president of Ford Motor Company - The top Mach I engine for the year, the 428, is replaced by a 429 during model run - Mustang, sans Shelby participation, comes out on top in the Trans Am race season - Model-year Mustang production falls to 190,727, including just 7673 convertibles

429 (not Boss) was put in the 70 Mustangs.

I think you'll find that in 1970 Ford started production of the 1971 Mustang in August, when indeed the "385" 429CJ and 429SCJ replaced the 428. The engine bay was enlarged to accomplish this.

There were NO production 1970 Mustangs with the 429 (non-BOSS) engine. Zero. Ask Kevin Marti. He has all the factory invoices. He can tell you how many had an ashtray, let alone what engine they had.

oh9mustang · Jun 19, 2009

I believe your right, Although the 429 (non boss) was put into a Mustang mid year of 1970 , it was for the 1971 Mustang, This artical was right and wrong, mostly missleading. Same for the engine chart.

Wart · Jun 19, 2009

Wart said:
I would remove the tank and take it to a radiator shop and have it boiled out, or I would just replace the tank.

2+2GT said:

Huh?

Click to expand...

Boil Out {LINK to an example} is a caustic/alkaline solution used by radiator shops to clean radiators. Works pretty well on fuel tanks too. Dissolves just about everything that isn't metal and some things that are.

Depending on cost verses cost if the tank is structurally sound 'boiling it out' is one way to make sure the tank is clean. Additionally some shops offer an internal coating that insures there will be no more rust and seals pin holes. That's more important to those of us with tanks that aren't being reproduced (damnit!).

SadbutTrue · Jun 19, 2009

aug0202 said:
ok cool kudos to all!!!. now, with power like that is the drivetrain going to be strong enough? worst case scenario Its stock or oem replacement

Verify that you have a C6 auto, a 9" rear, and the proper radiator for a 429/460. Not sure if 302s and big blocks had different radiators but i know you're gonna want the big block version if there is one.

If you have all of that, it should have no problem with a stock/mild 429/460.

In either case, with basic mods (exhaust, intake, carb, etc) you're looking at a very, very fun ride.

2+2GT · Jun 19, 2009

69 w/ 429 CJS HELP!!!!

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