i have 95 F250 4x4 ext cab longbed stick 4:10 rear end, everything is stock except for 33" bfg's, no lift what kind of power/torque am i getting outright? what about power/torque at the back wheels? what are some easy tricks to get more power (besides dual exhaust and k/n filter)?...looking for more power for up to 500 bucks (besides exhaust and filter)

Thanks, Neal

99 F250 Powerstroke ext cab long bed auto
92 crown vic

 

[font size="1" color="#FF0000"]LAST EDITED ON 05-Nov-01 AT 08:14 PM (EST)[/font][p][font size="1" color="#FF0000"]LAST EDITED ON 05-Nov-01 AT 08:13 PM (EST)[/font]

I've only seen two actual tests of stock EFI460 trucks.One was a '91 F-250HD regular cab 4X4 model.It's factory torque rating was 390 lbs.-ft.@2,200rpm,but the test actually showed the stock 460 to have 407 lbs.-ft.@2,000rpm at the rear wheels-according to a July 1991 Four Wheeler article entitled, "The Corner Office".The other test was done by Banks on a '95 F-350 supercab 4X4. I think their (stock)EFI460 dynoed at 368 lbs.ft. of torque,but I forget at what rpm. It varies from engine to engine. A good-running,stock EFI460 should have between 375-385 lbs.ft. at the rear wheels.Some might have a bit more,some a bit less,but they are easy to get over 450 lbs.-ft. at the wheels with some aftermarket pieces.

 

Incidently,the 1/4 time for that 1991 F-250 4X4 pickup was something like 16.6@87 mph.Not too bad considering the rear wheel horsepower was 185@3,500rpm,and the truck in question was a F-250HD 4X4.

 

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The test results posted on the attached website show a Banks test where a 460 powered '95 made a peak of 334 lb-ft at the rear wheels. My testing tends to verify this as my truck ('97 F-350 Crew Cab 4x4 EFI 460 5spd 4.10 gears) registered a maximum of 328 lb-ft at the rear wheels in stock form. With the banks power pack that number can be raised to 385 lb-ft at the rear wheels. The power pack is at least 3x as much $ as you want to spend though.

www.bankspower.com/test_results_AF06.cfm

 

[font size="1" color="#FF0000"]LAST EDITED ON 06-Nov-01 AT 07:32 PM (EST)[/font][p]Yeah,adding power isn't inexpensive.That goes for any engine family you might want to build-up. The EFI460 can produce the power,but it'll take you much $$$$ to do it.For $500(or under) you might try a "chip",or ignition upgrades.My EFI460 makes serious power(ask the E4OD that is...was...behind it.),but I put a lot of upgades on/in it to get it there. I'll have to go into the tranny,too,so you must consider the extra cost(s) involved. If you're looking for ideas,I believe Four Wheeler Magazine had a build-up of a '88,or '89 EFI460-powered F-350 dually,a year or so ago.It was a four part series.I forget what months they were featured in,but I can find out,if you want.If you want to go the supercharger route sometime later on,I know the now defunct Fullsize 4X4 magazine had a '97 EFI460 supercharger article in their Summer 1999 issue.You might want to check it out.A Vortech EFI460 kit is about $2,600-$2,800.If you just want to add torque for towing,plus some extra horsepower,add headers& have a muffler shop bend a set of 2 1/4" dual exhaust for your 460.Minus the cost of headers,your talking $475-$600 depending on what brand mufflers you end up going with.Headers for late-model EFI460s can be a bit "pricey",but they add some decent power gains.Hope this helps.

 

 

>>>> It was July to October 1999 You can read it at http://performanceunlimited.com/projectmpg/

>>>> I would really like to read that article, does anyone have a copy? I will buy it,if it is for sale... Or if someone can copy it for me, I pay the postage and coping charges... Just let me know! PLEASE..

Have a great day!
Mike
95 F-350 Extended Cab Dually 460/E4OD
Too much done to list here but I'll be glad to share if you ask me!

 

Shami,

Send me your address and I'll make a copy of the supercharged 460 article. No need to worry about the postage.

Neil

 

This is a copy of what i posted to another fellow big block owner. hopefully it helps It had some rough prices and ideas of what can be done or better yet what i have done or helped to do.

I wish you luck
Dusty


Ryan,
EFI 460 performance is a dangerous area and spendy very few have ventured past the basics so the questions exists how far do you wish to go? Doug Thorley Tri Y's ($600) are a reasonible set of headers make a huge difference, an open element filter charger cone shaped w/o box K&N makes a difference too($100), of course exaust ($300-400)(no Cat makes a little more) Cut the cones out of the Hpipe in you intake duct work. An MSD ignition box 6A($159), there is a cam ($200) Comp Cam Part #34-220-4 @.50 206 206 Lift .467 .467 Lobe Cen 112*, that works within your Speed density FI computer vacume parameters. next you'll have to get into performance engine mods, i ported my heads installed larger valves 2.19I 1.76E(i think1.76 i can't remember know, they are the CJ valves out of motorsport) and roller rockers, good power difference better flow ($500-1800), past these few mods you will have to change the electronics from Speed density to Mass air, this makes changing the cam to a .5 lift possible higher compression pistons can be installed also the mass air makes bigger injectors possible too. quite the combination also Mass air ($1000)make displcement changes possible.

As to your question on intakes don't change they are different, you will have to change heads and intake if you are looking to go carb, FI heads have a notch in them that creates incorrect turbulence.
There are some postings and Tech information from my mods @
https://www.ford-trucks.com/dcforum/80_96/4544_2.html


Good Luck
Dusty

F-250 now 350 4x4 ext cab SB Green Monster mass air 460 w/5spd conversion 205 T-case 4.11 gears, Doug Thorleys.

 

I also am in need of warming up my EFI460. I also noticed on the Comp Cams site there was a cam for EFI motors number 34-255-5. The specs are @.05 212 intake and 219 exhaust with a 114 degree lobe sep. The cam you mentioned looks like a fairly stock or rv cam. The headers from Thorley sound interesting, what mods if any were required for installation? Would they work ok with 3" single exhaust thru a Dynomax Race Magnum muffler or only absolutely dual exhaust?










92 F350 CC DRW 4WD EFI460 w/K&N,3" Exhaust

 

Great What a Guy!

Mail the copy to;

Alpine Technologies
16768 Whites Store Road
Boyds, Maryland 20841

ATTN: Mike

I'll send you postage or coping fees if you want I would be happy to do so.

Regards,
Mike

 

4x6

I run mine single 3" and then dual back, the thorleys come with a really good y pipe cross over setup. Do you have emissions in your state if not, order the 97 460 tri Y's if you do it they don't have the air jets plumed in and then just cap off your smog pump tubes. As to the cam it isnt too wild, it is just an rv grind, i thought stock was somewhere around a 192 or 196. Comp had told me that anything more would effect the vacume which would result in a rich run situation. But they may have figured out something since then too. Or i could have been mistaken. anyways good luck hope this info helps on the headers, well worth the $$$$ especially if you can find a bump and scratch set.

Good luck and let me know
Dusty

 

Thanks for the info Dusty. I'm in Utah and we have a pretty rigid emissions program. Where did you split the single into dual exhaust? I haven't seen any other information about the 34-255-5 comp cam. I may have to look into that after headers as the cam won't work properly without them. The information from performance unlimited is very interesting as far as bolt on performance. I may try some of their mods this spring when thinking about towing the 25' 5'er with 21' boat behind.




92 F350 CC DRW 4WD EFI460 w/K&N,3" Exhaust

 

I went 3" from the Y pipe for the headers to my flowmaster muffler which is a single 3 to dual 2.5 out ran one out each side behind the axle. A friend of mine used one of the comp cams with his stock manifolds and it was noticible but not significant. The header collectors are 2.5's but can be re-cut to 3" if you so desire for dual 3", you might ponder the ported heads if youa re going to do the cam, a little better flow makes a very nice difference with the big block. good luck

 

YOu may want to look into a company called L&L (web site is http://www.landlproducts.com/ ) they make a nice set of headers both air tube enabled and not which ever your prefer and they also have a nice free flowing "Y" pipe if you want to stay with the single exhaust... I have a set of there air tube enabled headers ($550 if I remember correctly) and am running duals all the way back two cat's two flowmaster 70's and dump at the rear wheels 3" all the way... Which is way to much exhaust for a factory motor, and I run real rich most of the time but I was planning for my newest addition whne I designed the system and needed the flow... (Incase you are unaware of my current project I am blowing my 460 with a KB TS2000-6)... For that monster I should be able to use the extra flow...
C-Ya'

Mike
'95 F350 460 E4OD Dually with lots of stuff..... Let me know if you want a list I love to share