Vintage Mustang Forums banner

1 - 20 of 29 Posts

·
Registered
Ford Mustang fastback GT390
Joined
·
115 Posts
Discussion Starter #1
Looking for your thoughts on which carb & CFM would best suit my engine.

351c 4barrel, Edelbrock 351 torker single plane, high lift cam, full msd, long tube headers 3” collectors twin 3” exhausts.
pulling 265hp to the rear wheels.
Tell me what carb you would put on.
cheers Mark.
 

·
Spammer Hammer
Joined
·
9,651 Posts
My 289 makes 350HP at the FW. Assuming 15% power train loss that’s roughly 300 at the wheels. It runs just fine with custom Holley 650DP.
 

·
Registered
Joined
·
3,034 Posts
Belky, a 750 cfm will do fine. Do you have the 2760 torker ? What camshaft do you have ? You might be able to improve driveability with a wider cam and a Blue Thunder dual plane, if you're interested. If you're happy with the single plane, rock on. LSG
 

·
Registered
Joined
·
9,717 Posts
Depends on a lot more than you've posted, but if it's spaghetti on the wall you want, it's spaghetti on the wall you get.

For me, a Holley 750 double pump - mechanical secondaries. My right foot knows where the secondaries come in, it's not an on/off switch.

FWIW, 265 at the wheels with the equipment you describe is awfully low.
 

·
Registered
Joined
·
35,477 Posts
Summit M2008VS750 if you have closed chamber 351-4V heads, otherwise M2008VS600.
 

·
Registered
Joined
·
314 Posts
Depends on a lot more than you've posted, but if it's spaghetti on the wall you want, it's spaghetti on the wall you get.

For me, a Holley 750 double pump - mechanical secondaries. My right foot knows where the secondaries come in, it's not an on/off switch.

FWIW, 265 at the wheels with the equipment you describe is awfully low.
Just in reference to the horsepower numbers. I agree that that sounds low for a Cleveland with that much done to it. However, the type of chassis dyno, the type of rear tire, automatic transmission can all effect those numbers.
As for the carb, if you don't have much for gears and have an automatic some type of vac secondary carb in the 650-750 range would probably work. Pick the brand you are most comfortable tuning.
 

·
Registered
Joined
·
1,547 Posts
Deleted
 

·
Registered
Ford Mustang fastback GT390
Joined
·
115 Posts
Discussion Starter #10
Belky, a 750 cfm will do fine. Do you have the 2760 torker ? What camshaft do you have ? You might be able to improve driveability with a wider cam and a Blue Thunder dual plane, if you're interested. If you're happy with the single plane, rock on. LSG
Yes it is the 2760 torker, does this require the turkey pan?. Also what are the screw in studs underneath the intake for, I’ve attached some pics showing the intake & the cam spec.
let me know your thoughts.
6FE8460F-113D-47A5-9F7B-D9EBDE378A03.jpeg
453DA5B1-0CE2-4F37-99D5-67E8E1556448.jpeg
50E53EA8-510D-4344-BB15-5F9002733094.jpeg
 

·
Registered
Ford Mustang fastback GT390
Joined
·
115 Posts
Discussion Starter #11
Just in reference to the horsepower numbers. I agree that that sounds low for a Cleveland with that much done to it. However, the type of chassis dyno, the type of rear tire, automatic transmission can all effect those numbers.
As for the carb, if you don't have much for gears and have an automatic some type of vac secondary carb in the 650-750 range would probably work. Pick the brand you are most comfortable tuning.
Thanks, just found this from a folder that came with the car, hows this sound.
FD773B21-F537-4A80-8107-12AFFB63FCE8.jpeg
 

·
Registered
Joined
·
5,299 Posts
I run a 670 Street Avenger on my 324 rear wheel horsepower 302 with C4 auto. With an auto, Vacuum Secondaries are a good idea. You can always do the ziptie trick if you're doing any drag racing.

I agree that 265 horsepower seems low for you. But if you are happy with that I recommend the same carb as me. They're good out of the box and have decent features. I got a factory-refurb off Ebay for pretty cheap. If you are actually shooting to maximize your power with that engine I might suggest a 750.
 

·
Registered
Ford Mustang fastback GT390
Joined
·
115 Posts
Discussion Starter #13
I ended up buying the edelbrock 1406 AVS2 650CFM, I replaced the Holley 4160 750CFM FOR THIS. I’m thinking now that I’ve made a mistake with the choice of Carburettor ?.
 

·
Registered
Joined
·
921 Posts
Just me, but I'd be looking for a nice FE to put back into that car!
 
  • Like
Reactions: belky

·
Registered
65 Fastback 289 4 spd, 65 convertible 5.0L 5 spd. 3.73 8.8
Joined
·
212 Posts
Looking for your thoughts on which carb & CFM would best suit my engine.

351c 4barrel, Edelbrock 351 torker single plane, high lift cam, full msd, long tube headers 3” collectors twin 3” exhausts.
pulling 265hp to the rear wheels.
Tell me what carb you would put on.
cheers Mark.
I built a351C with the same cam, 3000 stall, C6, 3.50 gears and I always have 3 or 4 Holley carbs laying around. What I have found is that they like a bigger carb then say a 351 W. I found a 780 worked good, But I like double pumpers and 750 worked great.
 

·
Registered
Joined
·
362 Posts
Im new to the game, but wouldnt your carb selection vary dependent on what you are using the car for. Is this a track car or or street car? However the think the general consensus is for that car you could go with a 750. But a lot of people over carb their engines. IJS
 
1 - 20 of 29 Posts
Top