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-   -   roller rocker 1.5 to 1.6 (http://www.hotrodders.com/forum/roller-rocker-1-5-1-6-a-130251.html)

tomthecomic 12-22-2007 02:51 PM

roller rocker 1.5 to 1.6
 
I have a hydro flat cam 480/492 228/234 @110. What will going to 1.6 do for me? Will I need new rods? I have full roller rockers 1.5 now (trickflow) and they are loud so thinking of going to comp or crane. My heads will go to a 540 lift.

Deuce 12-22-2007 03:20 PM

A .480 camshaft with 1.5 ratio rocker and going to 1.6 would be OK :)

Take .480 and divide by 15 ( 1.5 ) = .032
Then multiply by 16 ( 1.6 ) = .512

It would be like having a camshaft with .512 lift.

:D

GoneNova/406 12-22-2007 08:15 PM

and you need not do or buy anything else

JeffB 12-23-2007 12:53 AM

Loud rockers
 
I think I would contact Trick Flows Tech dept first,loud being a problem is unusual and needs to be adressed, switching to another brand might be a waste of $$ the gain from upping the ratio won't be noticable anyway.Sometimes increasing ratios can cause pushrod clearance issues requiring some minor machining.Also what valve springs are you running?

Sky65 12-23-2007 02:50 PM

Quote:

Originally Posted by JeffB
......the gain from upping the ratio won't be noticable anyway.....

Going from .480 lift to .512 is not noticeable? Really?

JeffB 12-23-2007 03:54 PM

Quote:

Originally Posted by Sky65
Going from .480 lift to .512 is not noticeable? Really?

You won't feel a gain of 4-6 HP,remember you won't be changing the duration at all,only the lift factor.

dawg 12-23-2007 04:33 PM

just check for spring bind etc.


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