614Streets

Well I decided on Sunday night (Oct 14th 01)
that I could do something to my truck and cure my boredom. So I thought I'll try to place my Small Block Chevy V8 1.6 Rocker Arms on my 2.8 liter V6. I have a V6 Performance book that clearly states that any narrow enough rocker arm from a small block chevy v8 can be used on a 2.8 Iron head. What would not work was a arm with 3/8 or 7/16 stud , because the 2.8 head has a 10mm stud. However I found that on my 1.6 stamped roller tip rocker arms for the sbc could be used if I just reused the pivot washer and the old stud nuts. So I did it, it worked and I am happy with the Increased power.

Considering the cheapest 1.6 rockers arms to be found previously were the Magnum roller tips by Comp Cams at around $169 retail and the only other listed was the extremely expensive crane cams gold full roller at around $310.
I used the crane cams stamped steel 1.6 sbc roller tip rockers which cost $119 . I actually wanted the summit stamped steel roller tips which were only $99 but at the time two years ago when I purchased them the summit ones were out of stock.

If you would like to see a picture or two and read some guy contesting my power gains then go here http://discussions.gmforums.com/show...&threadid=8645

Guys feel free to register and vote on that site adding a tbi/carb section . They call themselves a 60 degree club but dont cover 1/3 of the other engine types! Lets change that.

Also if any of you would like to lurk on the s-series .org board to get information on what other v6 owners are doing, check out http://www.s-series.org/phpBB/viewfo...?forum=21&2674

Also my supercharger pictures for the 2.8 can be found at my website if you remeber my previous posts. http://614streets.com

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1992 ext cab S10
173 on NOS, 5153Nos,Black Magic,2030 Crane Cam,11mm Moroso Wires, MSD 6al, MSD Blaster Coil,K&N,Holley Tbi, Edelbrock Headers,40 series Delta Flow,Zexel,Toms 28 spline axles,Hypertech chip, Granetelli 190 lph, Centerforce Dual Friction,Jet pulleys,Spray Bed Liner, Altezzas,Pioneer din 1/2, 01 Vette wheels, Harwood 4 inch hood, and Much more...Just bought a ***eol 2.8 Supercharger!!!!!!

Xenodrgn

New rockers are no 'new' mod... people have been doing it since the dawn of time..

Oh, and that new ticking you hear isn't valve lash, it's the rockers hitting the top of the valve covers... 1.6's are a tight fit...

(not flaming)

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1985 Camaro SC - 2.8L, auto.

C'mon, spin 'em for papa...
http://www.xenodrgn.f2s.com/Frontright.jpg

Xenodrgn

Oops, sorry about that... I didn't see the new Edlebroke valve covres until after I posted.. I take back that bit about the new ticking noise...

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1985 Camaro SC - 2.8L, auto.

C'mon, spin 'em for papa...
http://www.xenodrgn.f2s.com/Frontright.jpg

614Streets

Never mind.........

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http://614streets.com



[This message has been edited by 614Streets (edited October 16, 2001).]

614Streets

They dont "tick" at all, they clear fine. And if you read what I posted I clearly pointed out I used v8 rocker arms to save $. Thats what is new about it.

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http://614streets.com

Xenodrgn

I'm a fugging retard....

...

I get it. Heh, sorry about that... man don't I feel stupid...

So what your saying is, that new 1.6 ratio roller rockers for the V6's cost 169 at the cheapest, where you could get V8 stamped steel 1.6 ratio roller rockers for $99...

Huh, I guess that is pretty sweet...

And the ticking... don't ask me... I have no idea what the fu(k I'm talking about... somehow i got the whole 1.6 rockers thing confused with the poeople who wanted to use fiero valve covers on thier cars, and still I'm not even sure thats what it was... someone, somewhere along the line on this board was saying they had a tick under the valve cover because something was hitting it...

I'm sorry, forget this confused little boy even posted.

Thanks though, for pointing that little mod out to us...

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1985 Camaro SC - 2.8L, auto.

C'mon, spin 'em for papa...
http://www.xenodrgn.f2s.com/Frontright.jpg

Graeme'sFirebird

Man whoever you guys are looking at buying those v6 rockers from are smoking crack, i bought my 1.6's for 115.

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1972 Chevy Chevelle "Malibu"
Hooker Headers, Flowmaster 40 series mufflers, accel 8.8 wires,Edelbrock performer intake Edelbrock Carb, Torque Thrust "D" wheels
Click here for my Malibu information
In Memory of #3 Dale Earnhardt

Project: 85 2.8 bird

yup, in jegs, 1.6 for the 2.8 IS $119.00, 1.5 is $109.00.

now if it were the full roller rockers for the sbc that fit for $150. schweeeeeeet!!!!

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$150.00 2.8 Auto.
Blown Head Gasket.
turbo has arrived,
working on getting some 3.4 heads.

614Streets

dam I went to jegs awhile ago and they wanted 159 for em! Crap. Oh well I guess I know now... Lol

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http://614streets.com

614Streets

No wait, found them......
http://www.jegs.com/cgi-bin/ncommerc...031&prmenbr=76

$ 135.99
I did save cash!



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http://614streets.com

Camaro_hunter_d

Yes they do tap the valve covers at HIGH RPM's.

Joe_L

I was wondering how bably does 1.6 rockers screw up the Computer? and if so can it be altered without a chip?

Graeme'sFirebird

I had NO tap at all even 6000 rpm +....

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1972 Chevy Chevelle "Malibu"
Hooker Headers, Flowmaster 40 series mufflers, accel 8.8 wires,Edelbrock performer intake Edelbrock Carb, Torque Thrust "D" wheels
Click here for my Malibu information
In Memory of #3 Dale Earnhardt

TomP

Thanks for the info, 614! I was wondering about that a while ago ( https://www.thirdgen.org/messgboard/...ML/000144.html ), glad to know it -does- work. What do you think they meant by "narrow enough"? Narrow enough, as in, so the intake rocker and exhaust rocker didn't bang into one another?

Is there a company out there that makes a rocker ratio between 1.52 and 1.6 for a SBC? I always thought a 1.55 would be a good idea... I'd probably go with 1.52's because of the "new" emissions test in NJ, but I might be persuaded to go up to 1.55's...


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-Tom P (Hot rodded 1986 Firebird 2.8l)

614Streets

Someone intellegent and freindly! Hey Tom , yes by narrow I meant the width of the arms and the space between them. Some full roller rockers for the SBC will not work on the 2.8 heads because they are to wide at the fulcrum. I was looking into try the Proform full roller sbc 1.6's ($139.99) and switching the stud to 3/8 or 7/16($27-40). If they arent too wide, they will be just like the Crane Cams gold series. Pretty much all I was doing was running a test and try to find the most affordable way to go 1.6 . Full roller is something I am going to try on the 3.4 I hope to build.

Thats is a good question about the off 1.55 rockers. I bet if they exist then they are available for the sbc. Then you can have your cake and eat it too Tom!
-Will


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http://614streets.com

614Streets

Oh also forgot, anyone who wanted to use 1.6 ratio arms on the extrme budget could use crane cams sbc part # 270-11802-16 . These are the stamped steel plain janes but hey, 1.6 for $80.99


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http://614streets.com

Camaro_hunter_d

I was thinking of doing the Rocker arm thing. but I was thinking of 1.52 intake and 1.6 exhaust since the exhaust needs the lift more then the intake.