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Old 08-27-2007, 05:13 PM
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302 Swap in 69 Mustang

I have a ’69 Mustang with an anemic 302 in it… what’s the best (largest) engine that will bolt up to a c-4 auto tranny? I’ve always been a GM guy… sorry for the stupid question.

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Old 08-27-2007, 05:29 PM
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vf,
a 460 bolts up to a C4....but...ya gotta beef up the C4 to live with all that torque.....
pretty easy to build a 460 to 500ft/lbs+

68' thru 70' (all the same unibody) Ford stuffed just about every different big block they made at that time into Mustangs....

here's what a SCJ 428 would look like in your bay (customer's car at the shop for restoration)
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Last edited by red65mustang; 08-30-2007 at 04:31 AM.
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Old 08-27-2007, 05:42 PM
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Ha, you read my mind... a 460 is what I had in mind... what do ya gotta do to the tranny?? Is there a kit or something??
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Old 08-27-2007, 07:45 PM
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You can buy one already set up to handle a lot of power or I guess a transmission shop could do the same thing. A 460 has a lot of power but will fit tight in your bay. The Mustang won't handle as well with all of that weight on the front end. A 351 Windsor can be stroked out for a lot of cubic inches and with all of the aftermarket parts it can be made into a great performer. It is also a lot lighter than the 460. Another route would be to stroke your 302 to a 347. They can also be built to have amazing power.

Danny
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Old 08-27-2007, 08:41 PM
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Thanks a lot... maybe I'll go the 351 route. Thanks again!!
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Old 08-28-2007, 08:42 AM
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vf,
you asked for "biggest". I answered 460....

but what is the hp/tq/et/etc goal your looking for....

"if" you just want to go really quick once and awhile....a $500 nos kit would do it on your 302
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Old 08-28-2007, 11:15 AM
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I've heard nos will damage you engine. Any thoughts?
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Old 08-28-2007, 06:57 PM
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vf,
any/all of the NOS suppliers/mfgrs web sites have a "info" page like this link example:

http://www.forcefedperformance.com/Services_NOS.asp

look up all the different kits mfgrs on summit or jegs....each site will have more or different additional info
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Old 08-28-2007, 08:39 PM
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As always, THANKS for the info!!
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Old 08-29-2007, 08:11 AM
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vr,
your welcome but to be honest....it would take me forever to type all that out with just 2 fingers!

food for thought:

Key to any fun street car is max TQ (not hp) to the tires at all normal driving rpms...

TQ=real "force"=push you back in the seat fun

very very generally cubes=max TQ (why a 460 will give you a neck ache)

stock 302 with a decent tune up is 300ft/lbs
300ft/lbs x 3.00 gears = 900 ft/lbs of twist force on the tires
300ft/lbs x 3.73 gears = 1,119 ft/lbs of force on the tires=Hg is higher=more TQ with less load and a pretty darn good increase for "wow" acceleration with very little gas pedal

$500 gear swap is the best bang for the buck on a 302...ain't got cubes change gears for the same tq at the tires...
stock 351W motor x 3.00=1050 ft/lbs at the tires approx
TQ cam on a 302=about 320ft/lbs
320x3.73=1193
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Old 08-29-2007, 08:40 AM
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Quote:
Originally Posted by red65mustang


68' and later had upto 429 cube motors as options....
The 429 was not used in a MUSTANG until the 1971 model year other than the 69/70 BOSS and those were specially modified to take them.

While a 460 will go, it will require apron work. The car will then be nose heavy and only fit for straight road driving (hot street).

(IMO)

A lightly modified 302/351W will give you much more roadability unless you are just looking for flat out performance.
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Old 08-29-2007, 11:31 AM
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you also ask wkat would bolt to the bell housing. that would be 302/351. to bolt up a 429/460, you have to change bell housings. they are avail, but pricey. best bet 351 windsor.
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Old 08-29-2007, 10:59 PM
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Quote:
Originally Posted by KULTULZ
The 429 was not used in a MUSTANG until the 1971 model year other than the 69/70 BOSS and those were specially modified to take them.

While a 460 will go, it will require apron work. The car will then be nose heavy and only fit for straight road driving (hot street).

(IMO)

A lightly modified 302/351W will give you much more roadability unless you are just looking for flat out performance.
boss 429 1969/1970, rare, but they exist
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Old 08-30-2007, 04:02 AM
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guys,

I went back and changed my post to: just say: Ford "big block motors" (not 429)....cause about every motor Ford built was stuffed in them....

vf,
food for thought:
I'm not a big fan for starting with a 351W....250hp/340tq stock....
because it has the (small valves, TQ biased I/E) 302 heads on it....
to get performance above about 4500rpms....
you have to buy after market heads.....

"but"
the brand new totally complete (intake/dist/etc) crate motor is a heck of a buy ($2800?) and is definitely a fun "cruiser" motor just stock....
it is taller than a 302 in a Mustang so do check the air filter and carb and intake hood clearance before you buy

I do agree with putting in a big block does ruin the handling....

Last edited by red65mustang; 08-30-2007 at 04:36 AM.
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Old 08-30-2007, 04:12 AM
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whoops, double post....(server hiccup?)

Last edited by red65mustang; 08-30-2007 at 04:39 AM.
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