Intake/Carb combo??
Thread Starter
Burning Brakes
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Intake/Carb combo??
I have a 350 from a 1970 Chevy Pickup Truck in my 1974 roadster. The guy I bought the car from said it has flat top pistons, 350 HP heads, 350 HP cam. It also has a Holley 750 Double Pump on it. I am looking at replacing the intake manifold and carb. I am thinking of going with a Holley 600 or 650. I'd also like to put a K&N air filter assembly on it. I want to keep the same hood on it so I can't get anything too tall. What combination would you guys recommend?
Thanks in advance.
[Modified by scottw, 6:43 PM 1/11/2002]
Thanks in advance.
[Modified by scottw, 6:43 PM 1/11/2002]
Racer
Joined: Nov 2001
Posts: 355
Likes: 1
From: Pennsville NJ
Re: Intake/Carb combo?? (scottw)
I have an Edelbrock combo. The performer intake and a 600 cfm carb. It was a great improvement. Until yesterday I had a paper 2" high air filter because of clearance. But yesterday I tested a 3" K&N air filter for clearance and the hood closed. The front half of the housing hits the **** carpet on the underside of the hood because there is a little dust from it when I lift the hood back up. But the hood doesn't directly hit the housing.
Drifting
Joined: Nov 2000
Posts: 1,361
Likes: 0
From: Honolulu Hawaii
Re: Intake/Carb combo?? (scottw)
If you got a good set of free flowing heads & exhaust, the Weiand Team G Street Ram single plane manifold #7525 gives a real kick in the arsh. It fits under stock Vette hoods and has speadbore/squarebore carb mounting flange. I just installed it last week so it is a bit early to form a solid opinion. But so far, it feels like the 2101 Performer it replaced from off-idle to about 2000 rpm. The throttle response is crisper than I thought a single plane would be. The last single plane Vette I drove a few years ago had an old, old Edelbrock Torquer or Streetmaster(?) type single plane and it was noticeabily "spongey" off-idle. This manifold is significantly better off-idle. The Performer cannot match this manifold above 2000 rpm. BIG positive difference in the mid to upper rpm range.
Anyway, I plan on taking it to the dragstrip on Saturday to get a new baseline. I'm hoping for a 2-tenths improvement.
Anyway, I plan on taking it to the dragstrip on Saturday to get a new baseline. I'm hoping for a 2-tenths improvement.
Drifting
Joined: Jul 2001
Posts: 1,418
Likes: 1
Re: Intake/Carb combo?? (scottw)
Scott,
Nice car. My favorite year!
What intake do you have now? Why do you want to replace the 750?Normally the 750DP is not mounted on a stock intake is why I ask about the intake..Are you looking for more performance? More information needed.
Nice car. My favorite year!
What intake do you have now? Why do you want to replace the 750?Normally the 750DP is not mounted on a stock intake is why I ask about the intake..Are you looking for more performance? More information needed.
Thread Starter
Burning Brakes
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Re: Intake/Carb combo?? (mountainmotor)
I have very little low end torque. Even if I hit the gas lightly it always boggs down and sometimes stalls. I think by replacing the carb with a 600-650 and a new intake I will get what I'm looking for. I'm thinking of replacing the cam also. Not sure yet. Of course if I'm replacing the cam should I take the heads to the machine shop. Should I replace the valves ect. And if I'm doing all that, should I just have the entire thing rebuilt. You see where I'm going with this. Not sure how far I want to go with this yet. I've only had the car a month so I'm not doing anything yet.
Le Mans Master
Joined: Dec 2000
Posts: 5,245
Likes: 25
From: Blue Ridge Georgia
Re: Intake/Carb combo?? (scottw)
scottw, I feel so sorry for you. After a little drive this afternoon in my 75, I can't think of hitting the gas and not just sittting me back in my seat. Hell, I do the $20 trick all the time, you know if you can grab it you can have it. Install the XE262 from Comp and the Performer intake and a 650 Speed Demon and get a trill out of the ride.
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Drifting
Joined: Jul 2001
Posts: 1,418
Likes: 1
Re: Intake/Carb combo?? (scottw)
That bogg can be fixed and yes a new cam is probably in order but again,what intake manifold do you have? :) Don't count that 750 DP out yet!
[Modified by mountainmotor, 9:03 PM 1/11/2002]
[Modified by mountainmotor, 9:03 PM 1/11/2002]
Le Mans Master
Joined: Dec 2000
Posts: 9,752
Likes: 0
From: Chattanooga TN
St. Jude Donor '08-'09
Re: Intake/Carb combo?? (yogi78)
I like the Holley Dual-Plane Street Dominator Intake. Before I installed my crate engine, I had it on my tired L-48, and it made a HUGE difference.
Just my $0.02
Just my $0.02
