Series2 rockers on a series1
12-21-2006, 12:19 PM
#12
Senior Member
True Car Nut
Join Date: Aug 2005
Posts: 5,798
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by willwren
I don't think (gut feeling) ZZP is going to have those YT rockers for long. I suspect that'* why they dropped the price.
Has anyone even bought those yet?
Has anyone even bought those yet?
and isnt ZZP 100% S2 like Intense?
12-21-2006, 12:24 PM
#13
BANNED
Join Date: Mar 2004
Location: Purgatory
Posts: 0
Likes: 0
Received 0 Likes
on
0 Posts
12-21-2006, 09:03 PM
#19
Junior Member
Posts like a Ricer Type-R
They claim 30hp. There'* some conjecture on that.
1. They dyno'd a car. Dunno.
2. They made an assumption based on the S2 results from the same ratio change.
3. They got the numbers from the manufacturer, Yella Terra. Not likely. The Aussies never saw the S1 L67.
They are advertised to work with stock springs and pushrods. I dunno. I have valve float now with stock springs (raised shift points). I'd personally suggest stronger springs (stock is 80#) and stronger pushrods. I have a source for the pushrods, and have them sitting right here (came today) but they won't be tested until around February.
In the long run, you MUST have 93 or newer heads, and if the L67 gains 30hp from these rockers, the L27 isn't going to gain as much. For argument'* sake, say 15 or 20 horsepower (to be on the big side and be optomistic). Is that money worth the gain?
Or would you rather do a cam? The Aussies know the L27. They have cams for them. Try Crow Cams down under. Cheaper, but a little more work, but bigger gains too.
1. They dyno'd a car. Dunno.
2. They made an assumption based on the S2 results from the same ratio change.
3. They got the numbers from the manufacturer, Yella Terra. Not likely. The Aussies never saw the S1 L67.
They are advertised to work with stock springs and pushrods. I dunno. I have valve float now with stock springs (raised shift points). I'd personally suggest stronger springs (stock is 80#) and stronger pushrods. I have a source for the pushrods, and have them sitting right here (came today) but they won't be tested until around February.
In the long run, you MUST have 93 or newer heads, and if the L67 gains 30hp from these rockers, the L27 isn't going to gain as much. For argument'* sake, say 15 or 20 horsepower (to be on the big side and be optomistic). Is that money worth the gain?
Or would you rather do a cam? The Aussies know the L27. They have cams for them. Try Crow Cams down under. Cheaper, but a little more work, but bigger gains too.