Edelbrock 850 or rochester 800 cfm for a 455 olds
#1
Edelbrock 850 or rochester 800 cfm for a 455 olds
I can get a Edelbrock 850 #1910 or Rochester 800 cfm( Mid 70s's Buick) for a 455 Olds.
Need to rebuild the stock 750 rochester with cast iron manifold.
Should I stay stock or ....Upgrade to a newer bigger carb.???
Thanks
joepenoso
Need to rebuild the stock 750 rochester with cast iron manifold.
Should I stay stock or ....Upgrade to a newer bigger carb.???
Thanks
joepenoso
#4
I have the Edelbrock 850 Q-jet on my engine, I love it. If you have plans for future upgrades the the bigger carb might be good. I don't think you can go wrong with any of the carbs if your willing to rebuild them correctly and take the time to dial them in.
#5
x2
I like the electric choke too. I know you can retrofit it to any carb but its nice to have.
I am running it on a '69 400 with an edelbrock Performer, stock cam & stock torque converter and it runs really well.
I like the electric choke too. I know you can retrofit it to any carb but its nice to have.
I am running it on a '69 400 with an edelbrock Performer, stock cam & stock torque converter and it runs really well.
Last edited by droptopron; November 17th, 2011 at 10:32 AM.
#8
69 400
I have a stock 68 400 and I went with the 600 runs great but I think I could have gone bigger. Are you running an 850? That's not to big? Steve
#9
One other comment though - It has the fuel line coming into the side (Chevy style) instead of straight into the front so if original appearance is a factor you should keep that in mind.
http://www.everyday-performance.com/
If anybody needs a carb rebuilt he was very reasonable and got it done pretty quickly.
#11
We flowed one of those Edelbrock 850's. They don't flow 850,not even close.A typical 455 street engine,with an iron intake or aftermarket dual-plane does not need anything more than 750-780cfm.It will not spin fast enough,or have the potential top-end power to demand anything more.
The 500" Cadillacs were supposed to have an 800cfm carb,& they don't.
The 455 Buicks were supposed to have 800cfm carbs,and they don't either.
They don't need them.
The 500" Cadillacs were supposed to have an 800cfm carb,& they don't.
The 455 Buicks were supposed to have 800cfm carbs,and they don't either.
They don't need them.
#13
On another note,the Q-jets from the 403's don't flow 850 either.To get one that actually does,you need to look at mid 80's Chevy vans & trucks.
The Edelbrock 850 Q-jet doesn't flow 850.
You will be fine with the carb that you have.
The Edelbrock 850 Q-jet doesn't flow 850.
You will be fine with the carb that you have.
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