Canted valve heads
It’s more than likely an inventory thing. Brian doesn’t want to only have….say 200 sets on hand, and get orders for 350 sets…and it take 6 more months to get the next 150. Obviously I’m just guessing at numbers here. He’s got to have his ducks in a row to make everyone happy. So there’s the foundry, and then the final machining…which I’d guess is Brian’s folks. He’s pretty particular on his stuff being right. Who knows, right? Maybe someone will jump in with info. I think Tusky told me that him and Brian are buddies…maybe he knows something.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
TECH Regular
Joined: May 2023
Posts: 427
Likes: 142
From: Franconia, PA
I just called them and spoke to a woman on the phone. She said they are casting them now and they are hoping to be released in the first 2 weeks of April. She said there will be both cathedral and rec port options. I don't know if that means rec options for small bore, but I guess we will find out in a month or hopefully less.
On The Tree
Joined: Dec 2022
Posts: 172
Likes: 25
I just called them and spoke to a woman on the phone. She said they are casting them now and they are hoping to be released in the first 2 weeks of April. She said there will be both cathedral and rec port options. I don't know if that means rec options for small bore, but I guess we will find out in a month or hopefully less.
Staging Lane
Joined: Jul 2020
Posts: 59
Likes: 29
BTR canted valve heads are out.
GPI has their cathedral cnc version out and the square port is coming very soon they said.
Hopefully we'll see some combos using these soon. Looks like they're going to make some good power.
From GPI:
I'll let "slip" a few details of the iterations before we launch the LS3 Style! (Cathedral is already available)
2.125/2.165 Intake Valves Stainless or Ti
1.59 Stainless 1.600 Inconel or Ti
2 Chambers STD/Large Bore
(Small 5Xcc NA chamber, if demand is there)
STD Ductile Iron Seats, CHE BE/BX available
CVH3 R&D Intake Port Flow Numbers
38xcfm w/ 2.125
400+cfm w/ 2.165
Working on making sure the production versions match as close as possible to the R&D hand porting.
GPI has their cathedral cnc version out and the square port is coming very soon they said.
Hopefully we'll see some combos using these soon. Looks like they're going to make some good power.
From GPI:
I'll let "slip" a few details of the iterations before we launch the LS3 Style! (Cathedral is already available)
2.125/2.165 Intake Valves Stainless or Ti
1.59 Stainless 1.600 Inconel or Ti
2 Chambers STD/Large Bore
(Small 5Xcc NA chamber, if demand is there)
STD Ductile Iron Seats, CHE BE/BX available
CVH3 R&D Intake Port Flow Numbers
38xcfm w/ 2.125
400+cfm w/ 2.165
Working on making sure the production versions match as close as possible to the R&D hand porting.
TECH Regular
Joined: May 2023
Posts: 427
Likes: 142
From: Franconia, PA
Launching!
Joined: Apr 2021
Posts: 245
Likes: 108
From: New Athens IL
Going on my 416
12-1 compression btr cathedral heads
Btr 246/260 111
Holley Split single plane
ATM 1050 carb
holley term x
Flt lvl5 4l60
Yank 4000ss
4.10 gears
3050-3100lb race weight.
I went with the canted valve heads for several reasons. 1 i have dished pistons and needed the 61cc to retain my 12-1 compression. 2 powered metal guides. 3 hollow intake valves. 4 i already have a cathedral intake manifold.
Staging Lane
Joined: Jul 2020
Posts: 59
Likes: 29
getting them from GPI .
Going on my 416
12-1 compression btr cathedral heads
Btr 246/260 111
Holley Split single plane
ATM 1050 carb
holley term x
Flt lvl5 4l60
Yank 4000ss
4.10 gears
3050-3100lb race weight.
I went with the canted valve heads for several reasons. 1 i have dished pistons and needed the 61cc to retain my 12-1 compression. 2 powered metal guides. 3 hollow intake valves. 4 i already have a cathedral intake manifold.
Going on my 416
12-1 compression btr cathedral heads
Btr 246/260 111
Holley Split single plane
ATM 1050 carb
holley term x
Flt lvl5 4l60
Yank 4000ss
4.10 gears
3050-3100lb race weight.
I went with the canted valve heads for several reasons. 1 i have dished pistons and needed the 61cc to retain my 12-1 compression. 2 powered metal guides. 3 hollow intake valves. 4 i already have a cathedral intake manifold.
