mountainexplorer
1/2 ton status
Yep, Chevy made a 302. But not a whole lot of them. A friend of mine has one they ran in a race car and in a mud race truck for a while too.
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
307 Ci
- Thread starter skelly1
- Start date
lrazer
1/2 ton status
what was the difference between them an the 305 (besides the obvious 3ci)
sandawgk5
3/4 ton status
The 302 was a 289 that was bored to the size of a 350. It was to allow GM to race inside the rules of the GT series that had a 305 CI limit on engines. The Chevy 302 is a Badass motor.
Ira
Ira
Beast388
1/2 ton status
262 = 3.671" x 3.10" = mega dog
265 = 3.750" x 3.00" = dog
267 = 3.500" x 3.48" = mega dog
283 = 3.875" x 3.00" = decent
302 = 4.000" x 3.00" = wicked
305 = 3.740" x 3.48" = dog
307 = 3.875" x 3.25" = dog
The Chevy 302's were created to meet the requirement of the Trans Am racing rules of the day. At the time the CID limit was 305 cubes. Therefore, the 327 block and 283 crank were mated to create the 302. They were conservatively rated at 290hp but actually produced closer to 450 in dual carb DZ trim. Very powerful motor in the upper RPM ranges where the Trans Am race cars ran.
The 307 was a dog. They are known for their poor longetivity due to the lack of nickle and tin in the block composition.
265 = 3.750" x 3.00" = dog
267 = 3.500" x 3.48" = mega dog
283 = 3.875" x 3.00" = decent
302 = 4.000" x 3.00" = wicked
305 = 3.740" x 3.48" = dog
307 = 3.875" x 3.25" = dog
The Chevy 302's were created to meet the requirement of the Trans Am racing rules of the day. At the time the CID limit was 305 cubes. Therefore, the 327 block and 283 crank were mated to create the 302. They were conservatively rated at 290hp but actually produced closer to 450 in dual carb DZ trim. Very powerful motor in the upper RPM ranges where the Trans Am race cars ran.
The 307 was a dog. They are known for their poor longetivity due to the lack of nickle and tin in the block composition.
sandawgk5
3/4 ton status
My friend that I work with has a 1969DZ block in his 69 Camaro. He rebuilt his care with all of the date codes within like 6 months of each other like block, car, axles. And he bitches to me about how much things cost
. Then he asks me why I go to the junkyard and stuff like that for my "Stump Jumper"
. Then he asks me why I go to the junkyard and stuff like that for my "Stump Jumper"
3 on the tree
1/2 ton status
Scuse me, but Chevy never made a 289. The 302 was, I berlieve a 4" bore and 3" stroke. They love to rev and they need to, no bottom end. Only available in Z28s. They could be ordered with a cross ram dual 4 barrel and disc brake rear end, plus M22 Muncie. Factory rated at 290 horses, I believe. I think they also came with a forged steel crank. All in all, a GREAT motor for a Chevy II, or a Vega. I'm thinking it was a 327 bore with a 283 stroke. The opposite is what a 307 is, 327 stroke, 283 bore.sandawgk5 said:
sandawgk5
3/4 ton status
Strike 3. I am done.
Cliff notes:
Thread started as 307-----It sucks.
Got turned into 302--------It kicks ass.
Ira
Cliff notes:
Thread started as 307-----It sucks.
Got turned into 302--------It kicks ass.
Ira
skelly1
1/2 ton status
Yep, 307 sucks. Stick with the 350, 383, 400 in the SBC. I got a 396 BBC and I would rather have a 454 or 502. It spins up nicely but it doesn't have the grunt I need for a 4wd truck.
beater_k20
Banned
skelly1 said:
what the hell are you doing with your truck that a big block doesnt have enough torque for?!
i think sanddawg is an imposter, sent from the Bronco site to dethrone us from being the top 4x4x site out there.
sandawgk5
3/4 ton status
i think sanddawg is an imposter, sent from the Bronco site to dethrone us from being the top 4x4x site out there.
OUCH!!!
Closest thing I got to a F*&d is my wifes Protoge 5. I know 289 is a f*&d motor don't even know why I typed that down
. Shun me if you will my ego will recover .Ira
