Intake and carb suggestions
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
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From: St. Louis
Intake and carb suggestions
I am starting my rebuild of my 1970 350 300 hp. The car is not all original. Any suggestion for a intake and carb? The motor will be upgraded with a mild cam. Or should I stick with the stock setup?
Pro
Joined: May 2006
Posts: 595
Likes: 84
From: Colonial Beach Virginia
Just make sure you get a combo that will fit under the hood. A good Edelbrock Performer or Air Gap is a good basic choice. The Q-Jet is a great carb and is the best alternative, in my opinion.
Thread Starter
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Joined: Nov 2015
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From: St. Louis
Race Director
Joined: Apr 2009
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From: Charlotte NC
All depends on how you want the feeling in the 'seat of your pants' is when you step on it.
If you are not out for blistering power....I would advise using the stock stuff. The Quadra-Jet is enough carb and will work fine...but also depends on what you are going to be doing with the car.
If you go with an Edelbrock intake and another carb...you can run into issues with the linkage bracket, an air cleaner that will work, the vacuum fitting location on the intake at the back, having to deal with a new fuel line set-up from the pump to the carb (which can NOW be GREATLY EFFECTED by heater hose fitting location in the intake).
IF you go with a new intake...MAKE SURE YOU RE-USE the fitting in the intake for your heater core due to the orifice is much smaller than what you might buy and THINK is correct.
DUB
If you are not out for blistering power....I would advise using the stock stuff. The Quadra-Jet is enough carb and will work fine...but also depends on what you are going to be doing with the car.
If you go with an Edelbrock intake and another carb...you can run into issues with the linkage bracket, an air cleaner that will work, the vacuum fitting location on the intake at the back, having to deal with a new fuel line set-up from the pump to the carb (which can NOW be GREATLY EFFECTED by heater hose fitting location in the intake).
IF you go with a new intake...MAKE SURE YOU RE-USE the fitting in the intake for your heater core due to the orifice is much smaller than what you might buy and THINK is correct.
DUB
Melting Slicks
Joined: Mar 2008
Posts: 2,989
Likes: 198
From: Meriden CT
A few ponies maybe, but the power is made in the heads and cam, so don't expect much with stock pieces. If you're doing the intake, the exhaust needs to be freed up also to see any real gains.
Last edited by SH-60B; Jan 23, 2016 at 06:43 PM.
Thread Starter
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From: St. Louis
Instructor
Joined: Jul 2015
Posts: 140
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From: Indiana
If you go with an Edelbrock intake and another carb...you can run into issues with the linkage bracket, an air cleaner that will work, the vacuum fitting location on the intake at the back, having to deal with a new fuel line set-up from the pump to the carb (which can NOW be GREATLY EFFECTED by heater hose fitting location in the intake).
DUB
DUB
I'm open to suggestions on a fix if anyone knows of one off the top of their head.
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Le Mans Master
Joined: May 2002
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From: Lebanon Township New Jersey
If your existing Qjet is working well, changing carb and intake won't provide any gains that you could feel. Setting up your ignition advance, exhaust improvements, upgrading camshaft, heads and gearing, in that order, is the way to go. Of course, you should upgrade the bottom end along the way.
Thread Starter
Advanced
Joined: Nov 2015
Posts: 78
Likes: 4
From: St. Louis
If your existing Qjet is working well, changing carb and intake won't provide any gains that you could feel. Setting up your ignition advance, exhaust improvements, upgrading camshaft, heads and gearing, in that order, is the way to go. Of course, you should upgrade the bottom end along the way.
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
That's a good plan. Just fyi, I use a Qjet on the fairly mild 383 in my car and it has run 12.15 in the quarter, so a Qjet will not slow you down.
Pro
Joined: May 2006
Posts: 595
Likes: 84
From: Colonial Beach Virginia
The only reason I am upgrading my intake is because I picked up a polished Edelbrock 21011 for $70, and it will look good. No performance reasons at all. If you want to dress up your engine, then do it. But performance gains are minimal. But in saying that, a nice higher flowing intake will support and compliment any future mods you may do.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
If you're going to pull the heads off to get them rebuilt I would consider new heads.
Cost to rebuild your old heads could run quite a lot if valve guides need put in and springs need replaced, valve seals, not to mention valves may need replacing as well. When all done you may have a $800 or more set of stock heads that still don't flow any better.
Dart iron eagle ss heads with 165 cc runners and a 67 cc chamber to bump your compression a little, fully assembled run just over $1000.
Darts run big on the intake tract so 165 cc may be more like 172 or more, also 67 cc chamber may be more like 69 or 70. But GM ran big too. I found my 76 cc chambers to be as large as 80 cc's.
New springs, valves,guides and seals, and flow better than stock. Just a thought.
http://www.summitracing.com/parts/dr...365a/overview/
If I were going to improve the flow of the intake side then headers may be a consideration to improve the flow of the exhaust side.
Performer intake 2101 and similar will fit under the hood and with your q-jet.
Cost to rebuild your old heads could run quite a lot if valve guides need put in and springs need replaced, valve seals, not to mention valves may need replacing as well. When all done you may have a $800 or more set of stock heads that still don't flow any better.
Dart iron eagle ss heads with 165 cc runners and a 67 cc chamber to bump your compression a little, fully assembled run just over $1000.
Darts run big on the intake tract so 165 cc may be more like 172 or more, also 67 cc chamber may be more like 69 or 70. But GM ran big too. I found my 76 cc chambers to be as large as 80 cc's.
New springs, valves,guides and seals, and flow better than stock. Just a thought.
http://www.summitracing.com/parts/dr...365a/overview/
If I were going to improve the flow of the intake side then headers may be a consideration to improve the flow of the exhaust side.
Performer intake 2101 and similar will fit under the hood and with your q-jet.
Last edited by REELAV8R; Jan 25, 2016 at 01:52 PM.
Race Director
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From: Tampa, Florida
Race Director
Joined: Apr 2009
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From: Charlotte NC
I have been down this road more times than I can count where I have to custom make up stuff because I choose NOT to use some of the parts that GM offered ( such as the Holley fuel line for an LT-1).
DUB
Race Director
Joined: Apr 2009
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From: Charlotte NC
The exhaust manifolds are STOCK 2-1/2" 'ram horn' design and had a special cast iron looking heat coating applied to them so all of the A/C brackets and such would work. And the car has WICKED POWER.
Custom bent and made stainless steel chambered exhaust from Allen's..and a Bow-tie overdrive 700r4 transmission....which is why the exhaust had to be custom made due the transmission pan shape is COMPLETELY different..and a stock system is WAY too close for my comfort.
SO...just to let you know it can be done....all it takes is careful measuring and using clay to verify heights where needed.
DUB
Burning Brakes
Joined: Apr 2013
Posts: 1,194
Likes: 109
From: Las Vegas NV
Another vote for just replacing the heads. I just picked up a set of Blue Print heads for about $900. 195cc intake, 64cc chamber, all aluminum... vs paying a shop to fix up my old heads. I feel good about the purchase.
On a side note, anyone want to buy some used cast phase II bowtie heads to help me recoup some of my costs of the new heads? Only 4 leaky valves and 2 busted off valve cover studs
On a side note, anyone want to buy some used cast phase II bowtie heads to help me recoup some of my costs of the new heads? Only 4 leaky valves and 2 busted off valve cover studs
Last edited by AboveTheLogic; Jan 25, 2016 at 07:36 PM.
Former Vendor
Joined: Jun 2012
Posts: 145
Likes: 13
Another vote for just replacing the heads. I just picked up a set of Blue Print heads for about $900. 195cc intake, 64cc chamber, all aluminum... vs paying a shop to fix up my old heads. I feel good about the purchase.
On a side note, anyone want to buy some used cast phase II bowtie heads to help me recoup some of my costs of the new heads? Only 4 leaky valves and 2 busted off valve cover studs
On a side note, anyone want to buy some used cast phase II bowtie heads to help me recoup some of my costs of the new heads? Only 4 leaky valves and 2 busted off valve cover studs
Hi AboveTheLogic
I saw your post and wanted to say thank you for your purchase of BluePrint Engine's Muscle Series aluminum heads.
Don't hesitate to contact if you have any questions on installation of your new heads. We are here to help.
Scott Liggett
BluePrint Engines
1(800)483-4263.
info@blueprintengines.com
www.blueprintengines.com