668.3 HP From Chev 377"!!!
01-30-2005, 04:47 PM
#1
Staging Lane
Thread Starter
Join Date: Jan 2005
Location: Boise, Idaho
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
668.3 HP From Chev 377"!!! The dyno sheet from this Dart Alluminum Block engine. 10.8 compression, 18 deg Chapman 246 cly heads, titanium valves, comp cs254/260 R108 roller cam, .026/.028 valve lash, 93 octane, Penzoil 15w-40 mineral oil, Accel 416 plugs .040 gap, 1 7/8 headers, 750 Holley Carb. 668.3 Hp Non blower or turbo.
See dyno sheet at: http://community.webshots.com/photo...233855104KcyjkN
Forgive my ignorance, but how is The builder of this engine (American Speed) getting these numbers, and nothing like it in this forum?
2005 GTM
See dyno sheet at: http://community.webshots.com/photo...233855104KcyjkN
Forgive my ignorance, but how is The builder of this engine (American Speed) getting these numbers, and nothing like it in this forum?
2005 GTM
01-30-2005, 04:56 PM
#3
Staging Lane
Thread Starter
Join Date: Jan 2005
Location: Boise, Idaho
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Gtm I am triing to get more input, not enough action on the other thread. The GTM is C5 base Kit Car nearing production at 2200 lbs.
See www.factoryfive.com
See www.factoryfive.com
01-30-2005, 05:08 PM
#5
Staging Lane
Thread Starter
Join Date: Jan 2005
Location: Boise, Idaho
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
GTM Prototype #2 Not available yet. Factory Five Racing (FFR) have taken 2+ years in development and hundreds of thousands of dollars. Production will begin this Spring for previous FFR owners. Kit starts at 20k then add the wrecked C5.
01-30-2005, 05:15 PM
#6
TECH Addict
Join Date: Mar 2004
Location: Fat Chance Hotel
Posts: 2,336
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Karlo
Forgive my ignorance, but how is The builder of this engine (American Speed) getting these numbers, and nothing like it in this forum?
I think there are some cars like that on this forum. But a Dart Al block sound like a BBC to me. Any idea on displacement?
01-30-2005, 05:25 PM
#7
Staging Lane
Thread Starter
Join Date: Jan 2005
Location: Boise, Idaho
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
American Speed Trending Topics
01-30-2005, 05:32 PM
#8
TECH Addict
Join Date: Mar 2004
Location: Fat Chance Hotel
Posts: 2,336
Likes: 0
Received 0 Likes
on
0 Posts
Stroked small block (sbc not ls1) BFC (big ******* cam) and some really nice flowing 18* heads. And an intake that will support that power. Very costly which is why you don't see that much around here. Considering heads/cam/header + bolt-ons with a LS1 can get you over 500bhp for way less.
01-30-2005, 06:00 PM
#10
i looked at that engine and basicly its a no expense spared motor
its not that hard with a monster cam like that with those heads, titanium valves, dry sump setup, etc ... its perectly balanced im sure and its probably running a little on the loose side
if its a 400 destroked to a 377 then its got about a 4.125 bore which will unshroud the valves and allow bigger valves and let them flow nice
its not that hard with a monster cam like that with those heads, titanium valves, dry sump setup, etc ... its perectly balanced im sure and its probably running a little on the loose side
if its a 400 destroked to a 377 then its got about a 4.125 bore which will unshroud the valves and allow bigger valves and let them flow nice
... where do i sign? 
01-30-2005, 06:26 PM
#13
Staging Lane
Join Date: Sep 2004
Location: St Thomas, Ontario
Posts: 70
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by technical
668bhp is roughly 568rwhp (15% drivetrain loss).
I think there are some cars like that on this forum. But a Dart Al block sound like a BBC to me. Any idea on displacement?
I think there are some cars like that on this forum. But a Dart Al block sound like a BBC to me. Any idea on displacement?
01-30-2005, 06:34 PM
#14
FormerVendor
Not very hard at all. We have 4.030 bore motors doing that and for half the price. Have a 418 Windsor Ford that makes that (685 @ 7000) for less than half too! They are using 18 degree chevy heads which can make 800 or more on a larger engine with more compression. It's all in the cylinder heads.
01-30-2005, 07:01 PM
#16
We've got a naturally aspirated inline six cylinder making 640hp in one of our cars, makes 2.47 hp per cube. We have a no expense spared 440 small block going together right now, Pro Topline heads, titanium rods, etc that will make over 900 hp N/A. 660 from a 377 is pretty stout but nothing extraordinary.
01-30-2005, 07:04 PM
#17
TECH Junkie
Join Date: Aug 2002
Location: Fort Collins, CO
Posts: 3,726
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by racer7088
Not very hard at all. We have 4.030 bore motors doing that and for half the price. Have a 418 Windsor Ford that makes that (685 @ 7000) for less than half too! They are using 18 degree chevy heads which can make 800 or more on a larger engine with more compression. It's all in the cylinder heads.
Aaron's motor was a budget build as well!
01-30-2005, 08:04 PM
#19
TECH Fanatic
iTrader: (16)
Join Date: Oct 2003
Location: Ruffin,N.C.
Posts: 1,456
Likes: 0
Received 0 Likes
on
0 Posts
More Performance has a 406 on there site that makes like 725 hp. But the damn thing is 40 thousand dollars!! The sbc makes awesome power with the right stuff.