year on blue 302
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From: Standish ME
year on blue 302
where can i find the year of me 302 v8 after it has already been rebuilt? i cant find a number any where. i need it so i can but the right carb for it.
thanks,
Alec
thanks,
Alec
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Joined: Jul 2003
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From: OK
For casting numbers I found this: 302 V-8 Block - The casting number is located where the starter bolts up to the bell housing. Removal of the starter is necessary to see the number. For a carburetor, I would say 500-600 cfm carburetor. My dad has a 289 (I'm sure its not a 289 anymore) with a 500 cfm Edelbrock. On my truck, (It does have a 350) I have a 600 cfm Holley. Someone else with a 302 will probably be more help as I don't know.
hotrod48
hotrod48
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Joined: Dec 2004
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From: Shasta Lake, Ca.
Id go to a holley dealer and do a carb matching.. He will need to know what cam, Intake, If its been bored out and, if it has been decked, what crank, rods, and pistons and they can tell you what carb would work best on ur engine.. Year dont really matter becouse its not in a smog controlled car/truck..
Post Fiend
Joined: Sep 2004
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From: Near Fresno, California
Too much carb is also bad. A 302 at 5000RPM can only draw 437 cfm - if it was perfect. Holley seems to think about 85% efficiency is all you can get in a streetable engine, which is only 350 CFM.
I would talk to a Holley rep, but I sure would be careful about going over 500 CFM. I would consider an even smaller carb, depending on my engine and how I was going to use it.
My neighbor went with a 750 CFM double pumper because he liked the way it looked on his engine - now he has a truck that runs like a dog, and smells like he is running over rich all the time. He didn't listen to Holley when he ordered his carb.
I would talk to a Holley rep, but I sure would be careful about going over 500 CFM. I would consider an even smaller carb, depending on my engine and how I was going to use it.
My neighbor went with a 750 CFM double pumper because he liked the way it looked on his engine - now he has a truck that runs like a dog, and smells like he is running over rich all the time. He didn't listen to Holley when he ordered his carb.
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
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From: Northshore, MN
overcarbed...I had a small stock holley on my 73 f100 302...350 cfm I think? Anyways, I put it on my 78 bronco's 351M and it actually ran alot better and got better gas mileage. Funny how that works.
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That is about what I always figured also. The reading I have done used 1CFM per cubic inch as a rule of thumb. 1.5 on a highly modified high RPM racing engine.
48- Resist the temptation for a bigger carburetor if you have one. You will not be running 100% throttle most of the time so a larger carburetor is not good for much. A smaller one should actually be easier to tune. You will keep a higher velocity even at lower rpms and idle.
48- Resist the temptation for a bigger carburetor if you have one. You will not be running 100% throttle most of the time so a larger carburetor is not good for much. A smaller one should actually be easier to tune. You will keep a higher velocity even at lower rpms and idle.
Originally Posted by WillyB
Too much carb is also bad. A 302 at 5000RPM can only draw 437 cfm - if it was perfect. Holley seems to think about 85% efficiency is all you can get in a streetable engine, which is only 350 CFM.
I would talk to a Holley rep, but I sure would be careful about going over 500 CFM. I would consider an even smaller carb, depending on my engine and how I was going to use it.
My neighbor went with a 750 CFM double pumper because he liked the way it looked on his engine - now he has a truck that runs like a dog, and smells like he is running over rich all the time. He didn't listen to Holley when he ordered his carb.
I would talk to a Holley rep, but I sure would be careful about going over 500 CFM. I would consider an even smaller carb, depending on my engine and how I was going to use it.
My neighbor went with a 750 CFM double pumper because he liked the way it looked on his engine - now he has a truck that runs like a dog, and smells like he is running over rich all the time. He didn't listen to Holley when he ordered his carb.
