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crate chevy 302?

61K views 106 replies 77 participants last post by  fleenorracin 
#1 ·
is there a company out there that sells any long block or complete chevy 302 crate motors? i've done some half arsed looking but have come up empty. i want to stay away with used 302's cause they're going to be pushing it with regards to age and wear. your help would be greatly appreicated, thanks.
 
#78 ·
halloweenking is wrong

Halloween king is right and wrong on this answer. He is right in the way he says that Chevy made a 5L 305 but he is wrong when he says they didn't make a 302. Chevy made a 302 for the Camero from 66 to 69. It was rated at producing 290 horse power but really created around 375, which is more than the 350. They stopped making them because they didn't have a array of upgrades like the 350 did, and now a days the 350s produce ridiculous amounts of power with the EFI and the large amounts of upgrades that are available that the 302 is unnecessary. Ford is very over rated when it comes to the 302. They didn't make the best 302 ever Chevy did.
 
#80 ·
chevy 302

Chevy is the orign. maker of the 302. it was blue printed to a 305 and then ford bought the old 302 design an modified it to their spec. i have 4 chev. 302's sitting in my shop..... i have some very rare motors. i have a chev 348 with w series heads, come in the 59 impalas. i have 2 chev rocket 350's an a set os chev 325 heads. i have a ford 312, com in some falcons an a ford 430 com in the 62 Lincolns.
 
#81 ·
Sorry Mustangiy.......and man is this "302 Chevy" thing gettin beat to death. Yes Chevy made a 302 for the '67-69' Z-28, it was never "blueprinted" to a 305 (?????) by the factory anyway. "and then Ford bought the old 302 design and modified it to their spec" ????? Are you saying Ford bought the Chevy 302 design and modified it to their specs?? If so, NO NO NO NO!

Rocket 350's were Oldsmobiles, the 348 was introduced in '58 and really not that rare, it's big brother the 409 is getting rare. Never heard of "chev 325 heads" and the 312 Ford Y block never came in Falcons. I don't recall for sure if the 312 was even still being made in 1960 when the Falcon was introduced. The biggest V-8 in a Falcon was a 260, can't remember if they ever offered the 289 in the Sprint or not....don't think so. Anyway Welcome to the Forum!
 
#82 · (Edited)
Between 1966-'72 (the end of the musclecar era w/a couple exceptions), Ford won three championships, Chevy two and American Motors two (with Mark Donohue behind the wheel in '71).

Over the years, GM is ahead of FoMoCo by three.

Mark Donohue had three driving championships, Gentilozzi had five, Scott Pruett three, Tommy Kendall four.

Mustangguy, you need to double check those rare Chevrolet engines. Especially the 325 Chevy and the 'Rocket' 350- those engines were so rare, they cast them from nonexistium!
 
#83 ·
mustanggiy said:
Chevy is the orign. maker of the 302. it was blue printed to a 305 and then ford bought the old 302 design an modified it to their spec. i have 4 chev. 302's sitting in my shop..... i have some very rare motors. i have a chev 348 with w series heads, come in the 59 impalas. i have 2 chev rocket 350's an a set os chev 325 heads. i have a ford 312, com in some falcons an a ford 430 com in the 62 Lincolns.
302 bore & stroke
4.00" & 3.00"
305 bore & stroke
3.75" & 3.48

348s were all W engines
Rockets were Olds engines
 
#84 ·
the chev 302

no they do not make a crate chev 302 DZ. I know i looked everywhere for one and had to buy second hand for my car. The chevy 302 came out first in the trans am races the ford used the 289 in the mustang thats why the mustang never came out with a 302 untill after 69 when chev did away with the 302 and went to the 350/327. Listed in MUSCLE Americas legendary performance cars. A great book to read lots of interesting facts that i didnt know.
 
#88 ·
DZ302 Chevy engine

For all you guys that obviously don't have a clue, the 67-69 Camaro Z28's were in fact powered by a chevy 302 V8. These cars were also only available with 4 speed tranny's...no aoutomatics were ever put in a 67-69 Z28 from the factory. You Ford guys ought to read a book before making an *** out of yourself on here about Chevy's bad-*** 302. This engine was rated at 290 hp but actually put out more than 360 hp. While you can no longer buy a "factory" crate 302 from GM, there is a company in Tennessee that builds a Chevy 302 to factory specs. The factory 30-30 cam is also available thru Howards Cams. It's an identicle grind to the Duntov factory cam. By the way Ford guys...visit youtube and check out the 67-69 DZ302 Camaros...your 302 'Stangs from the same years didn't have a chance in hell against one of these.
 
#89 ·
302

racers have been building 302s way before 1967.In the early 60s a few guys found some 283 blocks that could be bored 125,they were called 301s. 283s that were bored .030 were 287s,.060 were 292s and the 301s were 125 over.Smokey Yunick build a 475 horse power 302 using all GM shelf parts except his own designed intake and headers. Thats a solid lifter cam and none roller rockers.
To build a modern version of a 302 just use a 327/350 block and buy an after market crank.At 1. 5 horse power per cubic inch,which is considered a very stout engine for street use thats normally aspirated,I prefer my 434 over a 302.
If you really want a screaming high rpm mouse,a dart block or equivalent bored 4.155 with a 3 inch stroke will give you 325 cubes.
 
#91 ·
i member them z28 302's well. the 69 dz had more compression than the 67-68. i dont have any idea just what the hp was but with verry little effort them engines turned way up in the rpm's.course it was a long time ago. i cant member everthing. i saw first hand a 69 z28 eat them big block cars plum up. i was there.it was a bad *** little engine rite out of the box.im sure theres a better way now a days to get even more power out of one of them 302's.
 
#92 ·
vinniekq2 said:
This is a truly fun subject that applies to many enthusiasts that remember when particular engines were considered better engines
This "fun subject" has been beaten to death over the years. Moving to the Lounge.
 
#105 ·
In 1973, I was given a DZ engine. Friend had a 69 z28 and blew it up. Couple of broken pistons, crank scored etc....I think the block was good, I never checked. I traded it for a L78 396 that needed rebuilding. We were all into big blocks then....Seemed like a good idea at the time.
 
#106 ·
In 1972 I was driving a 1970 Nova and in the USAF stationed in Abilene Texas. My fiancé now wife was living in Nederland Texas and I was driving back and forth every two weeks. My friend talked me into going to the grudge races at the local quarter mile track. This was Wednesday night and I was getting married the following Saturday. I made a couple of low 13 second runs then the engine started banging at the top of each gear. I figured it was either a bad plug or bad gas and was shocked to experience a dropped valve as I power shifted into 4th gear. Towed the Nova back to my friend’s house and after pulling the valve covers to determine which head was involved pulled that head. We discovered a rod and wrist pin in a cylinder-less hole. We were stepping and fetching trying to find a replacement engine before Saturday. Another friend heard of a DZ 302 that was pulled from a 69 Z/28 that was now running a big block. The DZ was in need of a freshen up but could be had for the measly sum of $150. We got it and did a valve job and a lower end freshen up and spent the next few days putting it into the Nova. I made the test drive Saturday morning two hours before I was to get married. The next day my wife and I headed back to Abilene Texas on the way a rocker arm broke but I had my old heads in the trunk and made quick work of the delay. The 302 never did run as good as my original 307 as it probably needed a bore job. I drove the Nova with the DZ 302 for almost a year while I built a 350 which I eventually dropped in. The Nova was sold six years later with that 350 in it. The DZ 302 was left in the garage of an Air Force friend when I was discharged.

True story
Vince
 
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