roller rocker questions

tayzoid1 · 10-22-2008, 11:18 PM

if i am not mistaken the factory rocker arms are a 1.6 ratio i have also heard of people using 1.7 rollers for alil more lift and less friction can i use 1.7 rollers and not run into any trouble on a factory head carbed 91 5.0 and would i see any real world gains in power or will i be asting 125$or more.

QWKSNKE · 10-22-2008, 11:21 PM

Is this with stock pistons?

qkjuicedpony · 10-23-2008, 04:27 AM

an F cam and 1.7s will work.....but you should just save your money and buy better heads.

EHardy1971 · 10-23-2008, 05:31 AM

If the car is stock,yeah,go ahead and put them on.It'll make a noticeable increase in power.

86GTPONY · 10-23-2008, 07:27 AM

1.7 roller rockers do make a difference. But, I don't think it's all that noticeable though..imo. They will add lift which is good for a couple of hp. but where they really benefit you is the reduction in friction over a factory stamped steel rocker. Takes less effort to open and close the valves, which "free's up" a few hp and with less friction, you'll have slightly lower oil temps. It's a good, cheap upgrade - but since you are running an F cam, you REALLY need to check your piston to valve clearance when you do it.

EHardy1971 · 10-23-2008, 08:02 AM

Ok,I missed the F cam in his sig.I would'nt do it if you still have the stock valvesprings.

86nu · 10-23-2008, 02:13 PM

the cost of springs and the rockers vs what you will pick up in hp gains aren't worth it in my opinion.

tayzoid1 · 10-23-2008, 04:14 PM

i knew the 1.7 would add a lil more lift but you said it might touch the piston would 1.6's do any good i figgured the only thing im really going to notice is gonna be that extras lil lift but if yall say not to ill def. go w/ the 1.6 and new valve springs

86nu · 10-23-2008, 04:18 PM

its not guaranteed but for every .1 you change on the rocker its about .030 in lift give or take.

As stated above the 15 hp or so for the 300 bucks of parts doesnt seem legit, especially with the work in changing springs

qkjuicedpony · 10-23-2008, 05:43 PM

save your cash and buy better heads....then be done with it

10-22-2008, 11:18 PM	#1
tayzoid1 5.slo stanger Join Date: Jan 2007 Location: oxford alabama Posts: 735	roller rocker questions if i am not mistaken the factory rocker arms are a 1.6 ratio i have also heard of people using 1.7 rollers for alil more lift and less friction can i use 1.7 rollers and not run into any trouble on a factory head carbed 91 5.0 and would i see any real world gains in power or will i be asting 125$or more. __________________ no mustangs anymore but i do have a 1jz swapped 83 supra

10-22-2008, 11:21 PM	#2
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Is this with stock pistons? __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

10-23-2008, 04:27 AM	#3
qkjuicedpony Dayuuuuuuum!!!!! Join Date: Dec 2004 Location: Dallas GA Posts: 2,933	an F cam and 1.7s will work.....but you should just save your money and buy better heads. __________________ 86 Mustang Gt......Mods piling up in my garage. 07 F350 dooly.....Tows my fifth wheel

10-23-2008, 05:31 AM	#4
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	If the car is stock,yeah,go ahead and put them on.It'll make a noticeable increase in power. __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

10-23-2008, 07:27 AM	#5
86GTPONY Gone but not forgotten Join Date: May 2008 Location: 4/08/2013. Went to the man upstairs. RIP Posts: 955	1.7 roller rockers do make a difference. But, I don't think it's all that noticeable though..imo. They will add lift which is good for a couple of hp. but where they really benefit you is the reduction in friction over a factory stamped steel rocker. Takes less effort to open and close the valves, which "free's up" a few hp and with less friction, you'll have slightly lower oil temps. It's a good, cheap upgrade - but since you are running an F cam, you REALLY need to check your piston to valve clearance when you do it. __________________ *-Don* 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder.

10-23-2008, 08:02 AM	#6
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	Ok,I missed the F cam in his sig.I would'nt do it if you still have the stock valvesprings. __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

10-23-2008, 02:13 PM	#7
86nu Senior Member Join Date: May 2007 Location: orlando florida Posts: 165	the cost of springs and the rockers vs what you will pick up in hp gains aren't worth it in my opinion. __________________ 86 Coupe aka the battle ship H/C/I, Nitrous, bla bla bla all on a 351

10-23-2008, 04:14 PM	#8
tayzoid1 5.slo stanger Join Date: Jan 2007 Location: oxford alabama Posts: 735	i knew the 1.7 would add a lil more lift but you said it might touch the piston would 1.6's do any good i figgured the only thing im really going to notice is gonna be that extras lil lift but if yall say not to ill def. go w/ the 1.6 and new valve springs __________________ no mustangs anymore but i do have a 1jz swapped 83 supra

10-23-2008, 04:18 PM	#9
86nu Senior Member Join Date: May 2007 Location: orlando florida Posts: 165	its not guaranteed but for every .1 you change on the rocker its about .030 in lift give or take. As stated above the 15 hp or so for the 300 bucks of parts doesnt seem legit, especially with the work in changing springs __________________ 86 Coupe aka the battle ship H/C/I, Nitrous, bla bla bla all on a 351

10-23-2008, 05:43 PM	#10
qkjuicedpony Dayuuuuuuum!!!!! Join Date: Dec 2004 Location: Dallas GA Posts: 2,933	save your cash and buy better heads....then be done with it __________________ 86 Mustang Gt......Mods piling up in my garage. 07 F350 dooly.....Tows my fifth wheel