Which carb and intake for 347 stroker? - FFCars.com : Factory Five Racing Discussion Forum

 
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post #1 of 13 (permalink) Old 03-19-2011, 06:15 PM Thread Starter
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Which carb and intake for 347 stroker?

Hi guys,

Maybe newbie questions, but it's first time a building an engine from scratch. Mine is a 347 stroker, will be CARB but need advices.

If I will be using AFR 185 heads, which carb do you recommend? I am currently looking at HOLLEY Double Pumper, 650 or 700? Also, which INTAKE should be good for my setup? An Edelbrock RMP Air Gap or Victor Jr?

I will be mainly do street with occasional track.

Thanks for advices.

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post #2 of 13 (permalink) Old 03-19-2011, 09:55 PM
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Performer RPM or Weiland Stealth with a 650DP will have good street manners and good mid-range. Other end of the spectrum would be Victor Jr with a 750DP, more track oriented upper RPM.


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post #3 of 13 (permalink) Old 03-20-2011, 12:20 AM
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post #4 of 13 (permalink) Old 03-20-2011, 12:23 AM
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post #5 of 13 (permalink) Old 03-20-2011, 12:41 AM
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i would think the other way around, dual plane with 750, single plane with 650.
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post #6 of 13 (permalink) Old 03-20-2011, 12:50 AM
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I have 185 afr, vic jr single plane, and a proform 750dp. It works very well.

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post #7 of 13 (permalink) Old 03-21-2011, 03:32 AM
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A lot depends on your camshaft choice - but since you will be spending most of your time on the street, an Edelbrock RPM Air-Gap Performer with a Holley 770cfm Street Avenger would be the best street combo.
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post #8 of 13 (permalink) Old 03-21-2011, 12:19 PM
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I am building a 347 too. I chose the Edlebrock Performer RPM and a Holley 650 DP, to go along with my Trick Flow Track Heat 190 heads and TF stage 2 cam. I can't wait to get it built. My car will be street driven more than 95% of the time so I chose parts for that RPM range rather than max power or top end power.

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post #9 of 13 (permalink) Old 03-21-2011, 01:00 PM
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you guys know with a single plane intake each cylinder pulls from 4 barrels, with the dual plane each cylinder pulls from 2 barrels, you can go bigger on a dual plane.
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post #10 of 13 (permalink) Old 03-21-2011, 11:41 PM Thread Starter
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From your comments, a dual plane like RPM Air gap seems to be the choice. If I go bigger with a 750CFM DB, will I see a noticeable performance increase compared to a 650CFM DB or will it just be worst on gas mileage?

My stroker is currently builded with a COMP CAMS Xtreme Energy 35-425-8

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post #11 of 13 (permalink) Old 03-22-2011, 04:25 AM
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there will be a noticeable difference in power, i've switched between a 650 & 750 on a 351 crate engine and it is definitely noticeable. i also switched from a vic jr intake to the rpm air gap and liked the air gap much better, this was on a 351 crate engine btw.

gas mileage shouldn't change a whole lot if any i wouldn't think. you'll be running on two barrels cruising.
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post #12 of 13 (permalink) Old 03-22-2011, 12:45 PM Thread Starter
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Vector,
Thanks for your good advice. My final choice will then be:
- Edelbrock RPM Air Gap Manifold
- 750 DP Carb, probably Holley 0-4779
Case closed.
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post #13 of 13 (permalink) Old 03-22-2011, 04:27 PM
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Quote:
Originally Posted by myrtille2004 View Post
Vector,
Thanks for your good advice. My final choice will then be:
- Edelbrock RPM Air Gap Manifold
- 750 DP Carb, probably Holley 0-4779
Case closed.
Good choices, but I like the 650 carb better on a street car. My last 347 it dyno'ed at ~410 rwhp with a mighty demon 650... My current racecar dyno'ed this past Saturday (342, Canfield 195 heads, very small levy racing camshaft, RPM airgap intake, mighty demon 650 carb) at 360rwhp, 365rwtq. The smaller carb will be a bit easier to tune....
Just my experience fwiw....

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