, June 03, 2005 7:43 PM
Subject: Re: [Chevelle-list] Vortec heads
As you mentioned,Gene,a Holley Street Dominator is basically 70's
technology. Edelbrock's Performer RPM and Air Gap dual planes will
outperform a Victor single plane up to around 7,000 rpm. One of these dual
planes would be a very
: Friday, June 03, 2005 7:43 PM
Subject: Re: [Chevelle-list] Vortec heads
As you mentioned,Gene,a Holley Street Dominator is basically 70's
technology. Edelbrock's Performer RPM and Air Gap dual planes will
outperform a Victor single plane up to around 7,000 rpm. One of these
dual
planes would
Mine is a 6 inch rod with KB hypereutectic pistone and
S/R torque big valve heads that were pocket ported. It
snaps when you punch it! This things I learned was to
buy the heads complete other than bare castings and
get a good machineist. Mine put it together with a
nitrided crank and the shortie
Thanks to everyone for the information.
I am sure I will have many more questions as I build this engine. I have
rebuilt hundreds of engines, but the last time I tried to BUILD an engine
was in '82. It seems that things have changed a lot since then (many, many,
many more options!)
Thanks
with heavy hydraulic
rollers? Seems like for the money a solid roller would make more power?
Gene
- Original Message -
From: Clint Hooper [EMAIL PROTECTED]
To: The Chevelle Mailing List Chevelle-list@chevelles.net
Sent: Thursday, June 02, 2005 9:22 PM
Subject: Re: [Chevelle-list] Vortec
As you mentioned,Gene,a Holley Street Dominator is basically 70's
technology. Edelbrock's Performer RPM and Air Gap dual planes will
outperform a Victor single plane up to around 7,000 rpm. One of these dual
planes would be a very good match for your L98 heads. Just curious but what
kind of cam
Keith, according to tests done by Chevy High Performance, the heads are so
efficient that the larger valves do not increase flow enough to warrant the
work. I have forgotten which month it was in, but I will look for it.
Brian
From: KW [EMAIL PROTECTED]
Reply-To: The Chevelle Mailing List
The cost to cut the seats for the larger valves probably isn't justified.
Stock Vortec heads flow pretty well but need the spring seats cut for larger
springs to handle lifts over .425. They also feature pressed-in studs and
will require a more expensive Vortec-compatible intake manifold.
Hi,
I have always heard that big valves really only help over 6000 RPM or so,
if this is a street engine and the old valves are still servicable I would
stick to them. Spend the money in other areas. A fast responding engine is
better on the street.
My 383 is running the early 90's vette
I looked hard at a pair of L98 Vette heads for my car. However,they have
such small 58cc chambers that keeping the compression under control (and the
attendant detonation problems) as well as their angle-plugs sometimes
requiring new headers,sent me off in another direction. A good dual plane
Dan,
Vortech heads will fit on all SBC blocks. Your
exhaust manifold/headers will bolt right up, but you will need a Vortech
specific intake manifold, since the bolt pattern is different. Head gaskets are
the same. Self aligning rockers are the same as regular rockers, but have
shoulders on
In the Jegs book, it says to use self
aligning rockers, yet Idon't see any listed. What are self aligning
rockers? Isthis another term for roller
rockers?
Dan,
There are at least two different styles of the self aligning rocker
arms. The roller rockers- have the addition of a thin
In a message dated 11/18/02 8:23:31 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
Hi,
Has anyone used the Chevy Vortec heads on an older motor.
I was wondering a couple things about them, such as:
Will my stock exhaust manifolds bolt up?
Do I use regular head gaskets?
In the Jegs book,
Ineed some
help with finding a way to use a strong cam with L31 vortec heads.I
just ordered the heads and need some imformation on how to use a strong cam with
a higher lift. The heads are said to be capable of handlingonly up
to .470 valve lift but i wasgoing to use the edelbrock
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