• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
351C 4V with manifolds
#1
How bad would it kill the power if I left the exhaust manifolds and married them to a Pypes mandrel bent 2.5" exhaust? I know it will make a lot more power with headers. I am planning an AOD install so I've been told it will be shorties or manifolds. I am thinking manifolds first and then later install some Sandersons shorties. The engine will be around 9.7:1 static compression with D0AE-N quench heads. The camshaft is a hydraulic roller that specs 224/230 @ .050, 569/578 lift with 1.73 rockers, and 110 lobe separation. I plan on TBI style aftermarket fuel injection on a Performer RPM intake manifold. Does anyone have experience with long tube headers and AOD installation behind a 4V Cleveland? I would like the header installation to be an upgrade my son can make later and feel the increase in power.
  Reply
#2
Long tube headers fit perfectly fine with the AOD. I believe Mr 4x4 has them with an AOD.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
#3
I am no expert, but I would challenge the statement that headers will make a lot more power.  Noise, yes, power, why?   The original 4V and Boss 351 exhaust manifolds were HUGE!  

Just a question.....

kcmash
  Reply
#4
The exhaust ports were huge yes but the stock manifolds were fairly restrictive. A good set of long tube headers would make a considerable difference over stock manifolds with his set up and the cam he has.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
#5
Headers provide scavenging and anti-reversion that the manifolds don't. Long tube headers also boost low-end torque.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
[+] 1 user Likes Don C's post
  Reply
#6
Ok, so what long tube header fits the best for AOD backed 4V Cleveland? I do not have a problem with headers as long as they fit correctly.
  Reply
#7
I would go with FPA's or Headmans. The Hooker's fit but then tend to turn in slightly at the collector causing them to be a little close to the trans which may cause heat transfer issues. I am not familiar enough with the patriot headers to know if they turn in or not. Keep in mind the hookers still fit and clear everything just a little close to the trans for my liking.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
Share Thread:  


Possibly Related Threads…
Thread Author Replies Views Last Post
  351c fan don blanchard 8 205 3 hours ago
Last Post: NOT A T5
  351C 4V "quirks" Mystic Fish 11 1,485 08-18-2019, 06:22 PM
Last Post: Spike Morelli
  Correct 351C Power Steering Hoses? street rod mach 1 12 848 08-18-2019, 03:25 PM
Last Post: Don C
  351C 4V Exhaust system kcmash 14 2,872 08-09-2019, 04:57 PM
Last Post: goodnigh
  Power steering mounting 351c DeereFanatic 4 260 07-15-2019, 09:29 AM
Last Post: Carolina_Mountain_Mustangs
  73 Mach 1 351C w/AC vacuum line DeereFanatic 8 480 06-22-2019, 03:45 PM
Last Post: DeereFanatic
  Water Temp sender in water pump - 351C TheDude 34 1,247 06-11-2019, 08:06 PM
Last Post: TheDude
  Circle Track Overheating Issue 351C jdwest711 10 455 06-10-2019, 05:24 PM
Last Post: TommyK



Users browsing this thread: 1 Guest(s)