Reply With QuoteThis may help...
oh yeah, i think 264 is the max you can go with standard internals. i wanted to go a bit higher but theres so many varying opinions out there. just wanted to see what people have and yeah, work from there
This may help...
I would go 27x or 28x with higher lift for NA engine.
If i go anything higher than 272 would i have to purchase an inner shim kit? or would up-rated springs do the job? hahah man im sucha noob
Duration is not as much of an issue as valve lift with OEM outer shims.
TODA recommend using their inner shim kit for lift values of 8.75mm & over.
(Other manufacturers say otherwise & run to higher limits with the OEM outer shim)
That said, the aggresivness of the cam ramps also plays a part in the ability of a certain cam to use outer shims or require inner shims.
Good aggressive ramp rate cams make good power, but the extra lift can flick the outer shim from the top of the bucket at high rpm.
The fix is to use an inner shim kit or use less aggressive cams wherebye you can run more lift & duration & keep the OEM outer shim.
The trade off with the latter is a little less power for a given profile (lift/duration) & poorer drivability.
(ie: Tight lash [high lift shorter duration] cams make more power)
The issue is really a financial one as there is a significant cost differnce between the two systems.
Higher lift will make more power, or the match the peak power of a longer duration lower lift cam & deliver better idle, drivability & midrange power.
For std bottom end, it's hard to go past the 264/256 combo. (running as much lift as you can afford too)
You can make more power going bigger but with trade offs in drivability & idle quality.
Hooks up oh yeah
20v Part Num: 14111-101-022 (272 9.0) quote please
Just so you know, 14111-101-022 has been superseeded by 14111-101-023 (272 9.2)
You can still get 14111-101-022 but it'd be back-order.
14111-101-023 is $605 delivered
If you get a better price, let me know & I'll see what I can do to beat it for you.
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