I need more torque! HELP!
Thread Starter
Joined: Apr 2009
Posts: 15
From: CA
I need more torque! HELP!
ive put a 650 edlebrock carb. edlebrock manifold. pertronix ignition system with a Flamethrower II 12v Coil. New spark plugs and wires. new air filter.
its a 289 V8
65 coupe
and i am just not getting the torque or power i want
what can i do??
thanks
its a 289 V8
65 coupe
and i am just not getting the torque or power i want
what can i do??
thanks
2nd Gear Member
Joined: Jul 2007
Posts: 322
From:
What is the torque/power that you want?
I like to compare the feeling I have when I drive different cars. My goal with the 67 was to get the same sensation that when I drive my dad's 1986 Porsche 911. With aluminium heads + nice cam + good exhaust + 3.55 and T5 I have reached my goal and I am happy
HP numbers (especially on old cars) are pretty much meaningless to me.
I like to compare the feeling I have when I drive different cars. My goal with the 67 was to get the same sensation that when I drive my dad's 1986 Porsche 911. With aluminium heads + nice cam + good exhaust + 3.55 and T5 I have reached my goal and I am happy
HP numbers (especially on old cars) are pretty much meaningless to me.
6th Gear Member
Joined: Jan 2007
Posts: 5,469
From: AR
Typical bolt ons will get you only so far.
You would likely see the biggest bang with a new cam and headers that will WORK WELL WITH your new manifold and carb.
It can be agued (and probably will be!) that your carb is too big, and it is bigger than you need it to be, but I am of the opinion that it will not hurt you by any measureable amount.
As mentioned above, you need to concentrate on a BALANCED PACKAGE where all of your parts will work together.
What manifold did you buy?
You would likely see the biggest bang with a new cam and headers that will WORK WELL WITH your new manifold and carb.
It can be agued (and probably will be!) that your carb is too big, and it is bigger than you need it to be, but I am of the opinion that it will not hurt you by any measureable amount.
As mentioned above, you need to concentrate on a BALANCED PACKAGE where all of your parts will work together.
What manifold did you buy?
6th Gear Member
Joined: Jan 2007
Posts: 5,469
From: AR
6th Gear Member
Joined: Aug 2007
Posts: 5,896
From: Elk Grove, CA
It will be difficult to get that carb tuned for that motor. Yes, it is too big. Vacuum secondaries help, but the primaries are still bigger than optimal for street driving conditions. You're losing vacuum signal, which means that fuel atomization isn't going to be all that great, and the transition from cruise to power mode is going to be finicky. You'll be fiddling with stepup springs and jets/rods, and you may never find a combination that works really well. You'd be much better off with a 500CFM carb.
One other thing that most people don't think about is timing. If the advance curve is off, you're not going to make decent power across the rpm range. A good performance shop can recurve your distributor, or you can try to do it yourself if you have a tach and a timing light.
One other thing that most people don't think about is timing. If the advance curve is off, you're not going to make decent power across the rpm range. A good performance shop can recurve your distributor, or you can try to do it yourself if you have a tach and a timing light.