Rocker arm ratio 1.6 vs. 1.7

Uwiik · Feb 27, 2014

Hi folks! In the process of rebuilding and upgrading my engine.
Here are what I have on hand:
- 302 SBF with 0.030 new pistons and ring
- Comp cams High Energy 268H
- Autolite 4100
- 1" Phenolic spacer
- JBA 2.25 full exhaust system
- Weiand stealth dual plane intake manifold
- Edelbrock E-street cyl head will be professionally ported and polished
- CR will be set at around 9.5:1
- ARP bolts all around

Ordering a few parts from Summit to complete the build and extra peace of mind with my el cheapo E-Street...
- K Motion K750 valve springs
- ARP Rocker Stud
- Scorpion Full roller rocker arms with different ratio to give more oomph to my little cam

Now, should I get 1.6 or 1.7 ratio rocker arm for optimum street friendly extra boost to the little cam? I know some will tell me to go cheaper route and buy another cam but I still need to buy rocker arm regardless, so it wouldn't be so cheap anymore...:shrug:

Thanks for the advices fellas....

Cam specs attached below

Woodchuck · Feb 27, 2014

If I WAS to go with 1.7's it would be on the exhausts only, to compensate for the poor flow on that side. I don't think you need them on the intake side.

Edg. · Feb 27, 2014

Im running 1.7 rockers on mine. I did it for the same reason to bump the cam up a little and I was switching to roller rockers anyway. To tell you the truth I did not notice a difference the motor was fast to begin with.

My427stang · Feb 27, 2014

If you are buying a set anyway, why not? However, if the 1.6s are a significantly better deal, don't bother, it will make nearly no measurable difference

Uwiik · Feb 28, 2014

I'll just get 1.6 for everything....Safer and cheaper and like everybody said I won't notice it anyway..

Thanks folks..

Rocker arm ratio 1.6 vs. 1.7

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