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Topic Review (Newest First)
06-13-2006 08:57 PM
Lonestar So much mis-information in this thread...

Both engines were developed to compete per class requirements.


The similarities between both are about the same as the 351 to the 350.
06-13-2006 08:32 PM
302's, both of em

Both the Z-28 Camaro and the Boss 302 Mustang were created for the express purpose of qualifying these cars for road racing. The Chevy Z-28 302 was indeed a 283 crank in a 327 block. (5 liters was the limit) Solid lifters, very hot cam, optional dual 4bbls on a ram intake dealer installed. High reving, not a very good street engine, but a real screamer on the track.

Same with the Boss 302 Mustangs. Cleveland heads on a Windsor block for durability and major high end breathing capability. Again, not a good street engine but a screamer on the track. Grand Daddy of today's Cleavor highbrids.

Both needed lots of gearing (3.73's just barely acceptable, 4.11's better, 4.56's were what they really wanted), ridiculous fuel consumption, hard starting, tough to keep tuned, needed really high octane because of insane compression ratios made bearable only because of the insane duration and overlap in the cams, no vaccuum so no power brakes, NO low end torque so no power anything on the originals. Power steering or AC would have stalled them at idle and idle was about 800 RPM minimum. Not a street engine, really.

Just about perfect in my opinion.

And Chevy did not sell any tooling or engineering to Ford. Both 302's were scratch built using existing parts from the respective factories.
06-13-2006 07:28 PM
chevelless454 chevy mad a 302 from 67 to 69 with the stroke of a 283 and the heads of a 327. 290 estmated hp but pushing mor like 350 and with a few mods 400+ great for a smallblock V8 i have a ford 302 and a chevy 305 both good motors but i dont know much but the boss 302 in a mustang generated lots of hp
04-12-2002 08:08 PM
jalopy45 Boy -oh -boy did this subject bring up a response. We used to take a 283 crank and use a 327 block and got what we called a 301. Maybe if we'd been better at math we would have called it a 302. Thes small engines still work great and I'mm building a couple now out of swap meet parts that are cheap and plentiful. (15 pistons,13.5:1 compression for $80.)Going up to Okalhoma City in the AM for the local Nationals and hoping to pick up more parts.
04-12-2002 06:46 PM
Paco Ford also produced the Boss 351 and the Boss 429 along about the same time frame, late '60's and early '70's. Never saw a Boss 351 until later in the years, but went to college with a dude that had a blue/black stiped '70 Boss 429...always a race between he and another guy with an LS-6 Chevelle SS, two more ****** cars....
04-11-2002 04:37 PM
jimm dear santa, please bring me one of all! the aforementioned car/engines,i been real good,jimm
04-11-2002 03:23 PM
dmorris1200 Hey F-1, well at least you know what kind of truck to buy . And as Paco mentioned Ford introduced the Boss 302 in 1969. It was a 302 Windsor block fitted with a pair of Cleveland heads. It was later replaced by a high performance 351 Cleveland.
04-11-2002 10:33 AM
F-1Rodder dmorris1200: I suspect that the reason your hiding out there is NJ so that you won't have to run against my chevy in an F-1 combo. Its hard to hook but when it hooks its a hoot!!!! Out here in the PNW all the Fords are 4X4's (I have one) to get back on the road. Actually, I'm not a marque snob.
04-11-2002 06:18 AM
Mrfixmaster Seems like I remember putting a 283 crank in a 327 to get a "cheapo" 302 sbc. Anyone else remember that???? <img src="confused.gif" border="0">
04-11-2002 06:16 AM
Mrfixmaster A quick "ballpark" conversion of liters to cubic inches is 61 cubic incches per liter. Thus the 5.0 liter is 5.o X 61= 305.
04-10-2002 11:10 PM
dinger whoops, hit the wrong as i was saying, i was a teen in those years, the 302 sbc made some serious dirt track race cars, sprints and late models. the torque band was perfect for that type of racing, they kicked butt. i heard tales of 375 horse on the dyno, straight from the factory. 290 horse rating from the factory kept the insurance folks from killing you with the high rates, i wonder if they ever caught on? anything over 300 horse was considered a "risk" car, they would clobber you on rates..
04-10-2002 11:05 PM
dinger paco, you bring back good memories. i was living in minn. -
04-10-2002 06:56 PM
Paco the 302 Chevy came out in the late '67 year model as a code DZ block and was in special Camaros with the factory option code Z-28, thus, the Camaro Z-28 option was born. They kept the engine thru '69, when they developed and replaced it with the LT-1 350CI engine in the Z-28 after that year. Ford also had a 302ci engine along the same time line, it was in the specially equipted Mustangs, and was called a BOSS 302. Both of these engine were high performance, high compression engines and could kick some serious booty. Can't recall all the specs on the Ford engine, but if memory serves me the 302 Chevy came stock with a Winters casting factory aluminum intake, was solid lifters, and was rated at 290HP, which was at least 50hp shy of what it really would do. The Z-28 came with a 4 speed only option, and no a/c in the early versions, but that, too, soon faded for creature comforts and lady drivers. I remember them well, I was there when they were new. Got my butt kicked good by a '70 Boss 302, and I was driving a '68 Dodge Charger was good, but not as good as that little yellow Boss. A good friend had a '68 Z-28, it was a bad boy too. Seemed to have a torque curve like a 2 cycle Yamaha...when it came on the pipe, it was too tuff. So much for the "good ole days".....
04-10-2002 05:26 PM
dmorris1200 The only Fords with sbchevys in them are the ones broken down on the side of the rode.......JUST KIDDING!
04-10-2002 02:02 PM
F-1Rodder I think I just learned something valuable. I do remember the chevy 302 motor but did not know that chev. sold it to Ford. I constantly take grief because I run a hot chev 383 in my truck. Now my answer will be that all sbfords have chevy's in them. That's rich for laughter.
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