anyone change heads/cams in 4.0sohc - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 10-08-2007
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anyone change heads/cams in 4.0sohc

has anyone upgraded the heads/cams or even pulled the stock heads off for any reason?
im thinking about the stage 3 heads w/ regrind cams from supersixmotorsports.com for my truck, to give me some better flow and more power( 4.0 mustang-auto-single exhaust peaked at 25hp gain with no change in tuning, and i think it was 40ftlbs tq) so if i can get those numbers or a little better after a tune ill be happy!
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Old 10-08-2007
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talk to NicksterSVT I know he has installed those heads and cams a few times.
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Old 10-08-2007
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What does something like that cost?
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Old 10-08-2007
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^^if you have too ask, you can't afford it

a lot...
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Old 10-08-2007
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never mind...i found them..
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Old 10-08-2007
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awsome! thats good to know someone has installed the ones im looking at.
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Old 10-08-2007
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Sweet.. i'd do it
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Old 10-08-2007
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Old 10-08-2007
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Quote:
Originally Posted by Lord Of War
What does something like that cost?
stage 3 heads $1650 *$250 refundable left/right core set
Custom regrind cams(these only work with the stg 3 heads) $575 *$125 refundable lt/rt core set
ARP alloy head studs $385 (may not be needed on N/A motor, but if your spending 2k on heads/cams might as well get better studs)
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Old 10-08-2007
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Seems pretty expensive for 25Hp and 40tq.
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Old 10-08-2007
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yeah. how much is an EE kit?
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Old 10-08-2007
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Quote:
Originally Posted by Lord Of War
Seems pretty expensive for 25Hp and 40tq.
well since there isn't anyone else who makes parts for the 4.0 SOHC, i wouldn't complain if you really wanted to build on up...
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Old 10-08-2007
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Quote:
Originally Posted by Lord Of War
Seems pretty expensive for 25Hp and 40tq.
I'd spend it and some time on the chassis dyno to harness the new heads full potential. I think with a good tune and headers with free flowing exhaust you may be looking at more like 40hp and 50-60 lb/ft of torque. That works for me...
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Old 10-08-2007
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man a superdupercharger would be way more gain per dollar. and way less work


JOSH
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Old 10-08-2007
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But if you had both.......
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Old 10-08-2007
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But if you had both.......
ZOOM ZOOM!
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Old 10-08-2007
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1 zoom shy of a mazda
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  #18  
Old 10-09-2007
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my mistake...
Our Stage 2+ heads have been shown to add 25 peak horsepower and 19 ft-lbs peak torque when tested at the rear wheels on a Mustang chassis dyno on an automatic 4.0 SOHC Mustang with single exhaust with no changes in tuning! Horsepower and torque increased throughout the entire RPM range with non-peak horsepower increases of up to 50 RWHP and non-peak torque increases as high as 80 ft-lbs! 5-speed cars will show even higher gains and with further tuning, even more power will be produced!


got the numbers mixed up and the heads... as these are only stage 2-no cams..

so the numbers would be a bit higher with stg 3 and cams and a dyno tune...
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  #19  
Old 10-10-2007
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i dont see how, without cramming in a ****load more air, these mods are actually worth it.

anyone have specs for thier cams and specs for the stock cam?
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  #20  
Old 10-10-2007
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Well a mustang dyno is hard to improve numbers on so that is very respectable. Also, with a free flow exhaust and intake it would gain more power easily. Also the ***** thing is you may have to pull the motor to get to the rear cam chain on the passanger side.
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  #21  
Old 10-11-2007
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ha ^^ ya i read that, and thats why i will be paying the speed shop down the road to mess with it.

i have JBA headers on the truck now, and with the other bolt on mods keeping stock bottom end, id be hoping for about 300hp which i feel is possible with heads/cams/headers/cat back/pullies/efan/bigger TB or bore out the stock one, and the next size up injectors(if needed) and a dyno tune
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