351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
Thread Starter
2nd Gear Member
Joined: May 2007
Posts: 484
From:
351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
Does it make a difference what Intake manifold i get for the engine to turn it into a 4v Carb.
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Do I need to make any other modifications to do the Switch ?
And with my 65 coupe it should pack a pretty good run on the streets i assume..
weight of car is rated a 2500 lbs for this model..
1965' coupe
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Do I need to make any other modifications to do the Switch ?
And with my 65 coupe it should pack a pretty good run on the streets i assume..
weight of car is rated a 2500 lbs for this model..
1965' coupe
5th Gear Member
Joined: Sep 2006
Posts: 3,302
From: Northernish Eastish Central Texas
RE: 351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
ORIGINAL: takeoutexodus
Does it make a difference what Intake manifold i get for the engine to turn it into a 4v Carb.
Sure it makes a difference. Intakes are designed differently based on their usage. Some are low-mid rpm, while others are designed for high revs.
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
Unless you're planning on doing some additional internal hop up work, you might consider a Holley 600 or an Avenger 570.
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Finding a decent intake for <$200 new will be tough. Check out your local Craigslist or other source of used parts.
Do I need to make any other modifications to do the Switch ?
No
And with my 65 coupe it should pack a pretty good run on the streets i assume..
Changing just the carb and the intake without doing anything will run better, but it's not going to be the massive change you may be hoping for. Horsepower improvement comes from a well thought out plan of improvements. Fuel system, Exhaust, ignition, and combustion.
Does it make a difference what Intake manifold i get for the engine to turn it into a 4v Carb.
Sure it makes a difference. Intakes are designed differently based on their usage. Some are low-mid rpm, while others are designed for high revs.
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
Unless you're planning on doing some additional internal hop up work, you might consider a Holley 600 or an Avenger 570.
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Finding a decent intake for <$200 new will be tough. Check out your local Craigslist or other source of used parts.
Do I need to make any other modifications to do the Switch ?
No
And with my 65 coupe it should pack a pretty good run on the streets i assume..
Changing just the carb and the intake without doing anything will run better, but it's not going to be the massive change you may be hoping for. Horsepower improvement comes from a well thought out plan of improvements. Fuel system, Exhaust, ignition, and combustion.
3rd Gear Member
Joined: Jul 2006
Posts: 537
From:
RE: 351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
ORIGINAL: takeoutexodus
Does it make a difference what Intake manifold i get for the engine to turn it into a 4v Carb.
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Do I need to make any other modifications to do the Switch ?
And with my 65 coupe it should pack a pretty good run on the streets i assume..
weight of car is rated a 2500 lbs for this model..
1965' coupe
Does it make a difference what Intake manifold i get for the engine to turn it into a 4v Carb.
I currently have a 2v intake right now ..
Im thinking about buying a holley 650 ..
But i cant find a decent Intake manifold to go with it .
Im looking to spend less than $200 bucks for the manifold ..Help! ..
Do I need to make any other modifications to do the Switch ?
And with my 65 coupe it should pack a pretty good run on the streets i assume..
weight of car is rated a 2500 lbs for this model..
1965' coupe
If I'm reading your right, you're wanting to switch from a 2 to 4v delivery and have a knee jerk reaction from it. Although you will feel some gain, you'll fall short of your expectations. (again, if I'm reading you right, if not, disregard)
As was stated, HP is gained from many things - a simple fuel delivery change from stock will net minimal gains.
Cheers.
6th Gear Member
Joined: Dec 2006
Posts: 8,007
From: Citrus County, FL
RE: 351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
actually there was a fairly large jump in HP between the 2v and 4v early 351w motors, and the heads/cam/pistons were the same in both motors. you get such a gain because the 2v intake and carb really did suck THAT BAD on that motor[:'(]
i have a barry grant 650 speed demon, vaccum secondaries and electric choke with less than 100 miles on it if your interested PM me. i have the extra springs to dial in the secondaries and the barry grant tuning DVD to go along with it, and the braided fuel line is included.
heres a pic:
i have a barry grant 650 speed demon, vaccum secondaries and electric choke with less than 100 miles on it if your interested PM me. i have the extra springs to dial in the secondaries and the barry grant tuning DVD to go along with it, and the braided fuel line is included.
heres a pic:
3rd Gear Member
Joined: May 2007
Posts: 518
From: Andalusia, Alabama
RE: 351 W Engine 2v to 4v Conversion NEED ADVICE/ HELP!!
ok i'm a novice (only 6 motors done) but i have a general understanding. i think that all you will have t do is get the heads redone and bigger valves put in and 4bbl intake and carb. but like i said im novice and you should get help from someone who REALLY nowa what there talking about
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