I am close to ordering a manifold from TA... but would like to know which one (duel or single plane) would be preferred with the spec listed below. Thanks for your help! Buick 350: 9.3 -9.5 estimated compression ratio TA 212 roller cam Roller Rockers TA Aluminum heads (when they are ready) Performance built Quadrajet from https://quadrajetpower.com Estimated 400 HP?
I’m no expert, but I think the dual plane would be good for a build like that. It is pretty similar to what I’m planning, and I have the Stage 1 dual plane already.
What is your goal for the motor you're doing ? I have the duel plane & the Edelbrock carb TA sells. My motor is mild build for driving on the street and maybe get on it every now and then. stats on my build : 9.875:1 compression Electronic recurved dist w/blaster coil Mild Crower cam Hooker headers TA dual plane intake Edelbrock 600 cfm carb mild port work to the 70 heads 2400 stall planning on 3:08 gears (Currently has 4:56)
Vonhef. Dual plane intake would probably be best for that combo. Probably closer to 300-320 hp depending on head flow and if your running headers. If your planning ta aluminum heads, consider more compression since the aluminum heads will help allow it. Ta 413 cam or ta roller cam, the sp3 intake and a holley 850. That would probably be 400 hp or better. Ryan, I think you’re leaving some hp untouched with the 600 cfm carb. Was it jetted up for your engine, especially the secondary metering?
No work has been done to it and I like the snappy response out of it. We still need to dial in a few things so the carb may get changed later on but for now it's working. Previous owner tried running multiple carbs and sizes and every time he went down on CFM it ran better. I know a lot of people like the bigger carbs but I have no experience other than stock. I am however running a electronic fuel pump not a stock pump.
Every time he went smaller it fatten up low end. They probably never did jetting or rods. Which is where the top end falls off and loose alot of power.
Alec, I was going by memory of this article by user Wovenweb when I had the 400 HP question: http://www.v8buick.com/index.php?threads/tsp-level-1-350-buildup-info-and-dyno-results.153248/page-4 He used a 212 cam and made 400 HP, but it was at around 5500 rpm. Granted, he used highly ported iron heads, but I believe the new TA aluminum heads will have great flow performance also. Even so... I would be happy with 350 HP in my little street rod. Michael, Just asking these 2 questions helped me make up my mind. This motor is in a 55 F100 and I am not drag racing with a stall converter, so I will use a duel plane manifold. Thank you for helping me!
Vonhef, yes thats some big flow on those heads, but also the 212 roller cam, which you have, much different cam then the flat tappet 212 . I would say it will have a really strong mid range . With the aluminum heads with extra porting, you may be at 400 or near it.
If you just drive the car around I would use the dual plane. If you have a 2500 or higher stall converter and like to hop on it, I would recommend the single plane, as the flash point of the converter isn't far from where the single plane takes over from the dual plane.
I can tell you this about the Single plane, I started my car up for the first time this year about an hour ago. I have a Holley 750 double pumper with 4 corner idle. 510 lift cam 230 duration @50 13inches vac at idle I turned on the elec fuel pump for about 5 minutes to make sure there are no leaks then I spun the engine and it was trying to start on its own without even touching the gas. I did have to give it a couple squirts to get it going but it fired right up and after about a minute of holding at 1000 rpm I could let it idle on its own. Ready for the Quaker race if I can get thru the sopping wet back yard. A now 25 year old motor. The SP3 intake Rocks!
