I got the 391 WHAT
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From: FLorida
I got the 391 WHAT
What I put in for torque? would 450lbs + be available?? already got a RV cam and electronic ignition. Carb just been rebuilt(should had a new one!!!)
tanks for the help (WHAT A SITE)
wrench
tanks for the help (WHAT A SITE)
wrench
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I got the 391 WHAT
Just for kicks I modeled a stock 390 in the Dyno2000 simulation program. (I just love this program) using a stock 390 with a 600 cfm 4bbl and large tube headers with mufflers only two cams made 450 or more. They are both made by Wolverine (www.blueracer.com) and are at or above 450 ft-lbs from 2000 to 3500 rpm. The cams are WG-1125 HYD V8 and WG-1126 HYD V8. I modeled every hydraulic FE cam in the camdisk cd-rom that Motion Software (www.motionsoftware.com)sells with the dyno program. One more suggestion, doing pocket porting to the stock heads will improve the horsepower and torque at a very reasonable cost.
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I got the 391 WHAT
jcquinn, can you run some stuff for me? 360 10:1 compression, single plane, 700cfm holley double pumper, cam specs 272/284 216/228 .533/.566 112* lobe seperation, 2.03/1.56 valves, ported, with a good valve job including a throat cut, can you run it with 10:1 and 8:1 compressions for me please?
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From: yes
I got the 391 WHAT
pocket porting I believe is where the area behind the valve is opened up and cleaned to help air flow through better if I understand it right, it's probably similar to a throat cut
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I got the 391 WHAT
Pocket porting consists of enlarging the port directly under the valve and smoothing the sharp ridge left where the factory machining intersects with the as cast port. It can also include streamlining the valve guide. These modifications are usually all a street vehicle needs in the area of improving ports.
FE427TP- I will try to work in your modeling but I am pretty busy this week. I will try to fit it in somewhere.
FE427TP- I will try to work in your modeling but I am pretty busy this week. I will try to fit it in somewhere.
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From: FLorida
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New User
Joined: Jun 2000
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I got the 391 WHAT
Finally got some fun time. Modelling the 360 gives 411 hp at 6000 with 411 ft-lbs at 4500 with 10:1 compression. This has a very flat torque curve with the cam you mentioned. 357 ft-lbs at 2000 and 360 ft-lbs at 6000. Lowering the compression to *:1 lowers the hp to 366 at 5750 and torque to 377 ft-lbs at 4500. The torque curve is still pretty flat but not as good as the higher compression engine. I'd run the higher compression, but I never have been sensible.
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Posting Guru
Joined: Oct 1999
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From: yes
I got the 391 WHAT
thanks for the info, I had been really curious what my engine is supposed to produce, i dont think it's getting quite that much, but I know I go through second gear really quick, and third is fairly good, the engine has a lot more pep than stock I think, btu thanks for your time
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I got the 391 WHAT
Jcquinn,Im a new member and would like to ask a favor of you.If you get spare time, could you run my 390 thru your desktop dyno?Id really appreciate it,please?
390,428 heads(ported and polished)roller rockers and lifters.Weiand dual plane intake,2" carb spacer,Holley 750 double pumper.Intake has been ported.RV high torque cam,Pete jackson gear drive timing gears.10.5:1 compression,stock crankshaft,crankscraper,windage tray.Doug Thorley hedders,3" straightpipes and dual glasspacks.Electric water pump,electric fans,underdrive pulleys.The block is original(32,000 miles),with stock bore.I run 97 octane gas,the heads were redone with hardened everything.
The truck is a 68 f-250 4x4,44" tires,4.88 rears and a 4 spd manual behind it.Please,run these #'s if you get time.The dyno shop printed out :539.6HP and 516 lbs-ft of torque.Is it possible?
390,428 heads(ported and polished)roller rockers and lifters.Weiand dual plane intake,2" carb spacer,Holley 750 double pumper.Intake has been ported.RV high torque cam,Pete jackson gear drive timing gears.10.5:1 compression,stock crankshaft,crankscraper,windage tray.Doug Thorley hedders,3" straightpipes and dual glasspacks.Electric water pump,electric fans,underdrive pulleys.The block is original(32,000 miles),with stock bore.I run 97 octane gas,the heads were redone with hardened everything.
The truck is a 68 f-250 4x4,44" tires,4.88 rears and a 4 spd manual behind it.Please,run these #'s if you get time.The dyno shop printed out :539.6HP and 516 lbs-ft of torque.Is it possible?
