Nascar Spec LS2 in Circle Track Mag
01-27-2007, 02:46 PM
#1
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
Nascar Spec LS2 in Circle Track Mag The new Circle Track magazine has an article about a new spec motor. It's a stock cube LS2 built by Carl Wegner. Using CNC'd stock casting heads and stock valve sizes it produced 625 hp at 7000 rpm and 520 lb/ft of torque at 5500 rpm. The motor has 600 hp from 6200 - 8000 rpm. Shows some impressive results for a 2" intake valve, which he said is the limiting factor on the HP.
01-27-2007, 02:51 PM
#2
10 Second Club
iTrader: (128)
Join Date: Jun 2005
Location: Meridian, MS
Posts: 778
Likes: 0
Received 0 Likes
on
0 Posts
thats pretty cool. the bad side of it is NASCAR has to run a solid lifter cam, not a roller & limited to like 358CI's. i have been wandering myself how GM would put a gen.III into a stock car.
01-27-2007, 02:59 PM
#3
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by SSwanner
thats pretty cool. the bad side of it is NASCAR has to run a solid lifter cam, not a roller & limited to like 358CI's. i have been wandering myself how GM would put a gen.III into a stock car.
01-27-2007, 06:15 PM
#5
We just put in an order for 2 of them. We ran the test one for Nascar last year at California. The motor pulled on everyone on the straights. I was very impressed with some of the stock compenents holding up like they did. We will be running the East Busch series with them this year. The only negative with using this motor is they have a gear rule in effect for this motor only, so that you do not wipe the fields *** with it!!!
01-27-2007, 06:55 PM
#6
Will the LS2 motor use the stock plastic LS2 intake with fuel injection or the aluminum four barrel type intake? At one time all ASA cars ran the LS1 motor with the OEM type fuel injection and intake.
01-27-2007, 07:21 PM
#7
Originally Posted by gollum
Will the LS2 motor use the stock plastic LS2 intake with fuel injection or the aluminum four barrel type intake? At one time all ASA cars ran the LS1 motor with the OEM type fuel injection and intake.
We use the carb style intake with I believe a 930cfm carb. You are not allowed fuel injection in Nascar. They are afraid you will use traction control.
Trending Topics
01-27-2007, 08:04 PM
#10
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
It is using a Edelbrock open plenum intake with a Holley 830 cfm carb. They made their own front cover that uses a Ford distributor, and also mounts a Ford mechanical fuel pump mounted upside down on top next to the distributor, driven off the cam. Kind of some neat stuff. I would scan the article, but the scanner is down. If anyone has any other questions I can keep trickling out more info. 
01-27-2007, 08:13 PM
#11
TECH Senior Member
iTrader: (18)
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by NoMoreFWD
It is using a Edelbrock open plenum intake with a Holley 830 cfm carb. They made their own front cover that uses a Ford distributor, and also mounts a Ford mechanical fuel pump mounted upside down on top next to the distributor, driven off the cam. Kind of some neat stuff. I would scan the article, but the scanner is down. If anyone has any other questions I can keep trickling out more info.
01-27-2007, 08:14 PM
#12
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 03 BUSA
We just put in an order for 2 of them. We ran the test one for Nascar last year at California. The motor pulled on everyone on the straights. I was very impressed with some of the stock components holding up like they did. We will be running the East Busch series with them this year. The only negative with using this motor is they have a gear rule in effect for this motor only, so that you do not wipe the fields *** with it!!!
01-27-2007, 08:39 PM
#13
Originally Posted by sawedoff
The whole engine has encryption marks that can be read only by a special hand held scanner. So it can be cheated up. They also made the engine with a ton of enhancements in it that would be areas where someone would cheat up.
You can get is as a crate engine assembled, or you can buy it as a kit. It's available from Provident Race Supply.
Provident Race Supply
You can get is as a crate engine assembled, or you can buy it as a kit. It's available from Provident Race Supply.
Provident Race Supply
That is correct. They gave the motor all the power it wants, so there really isn't any room for cheating. This is why they have the gear rule though to give an advantage to the other teams using a lower horsepower motor. This in effect makes the cars about the same.
01-27-2007, 08:42 PM
#14
GM really did their homework on these engines. It's some serious *** kicking stuff here. I am appalled sometimes at the negativity of the street crowd and the griping they do about stuff. This engine holds up.
The new fiberglass bodies are going to save people a ton of money too.
The new fiberglass bodies are going to save people a ton of money too.
01-27-2007, 09:08 PM
#17
The only bad thing about it is the price of the motor. We just got a quote for 2 kits and they came across for 25K??? For that kind of money I could have 2 bullet proof 427's built. That is the only thing I do not understand, but when the other guys are spending upwards of 40 k on a built motor when they see 25k it seems like a steal.
01-27-2007, 09:29 PM
#18
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by DONAIMIAN
That front timing cover has been in the GMPP catalog for some time now. Just looks strange to see a chevy motor with the distributor up front.
01-27-2007, 09:50 PM
#19
On The Tree
Thread Starter
iTrader: (1)
Join Date: May 2006
Posts: 197
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 03 BUSA
The only bad thing about it is the price of the motor. We just got a quote for 2 kits and they came across for 25K??? For that kind of money I could have 2 bullet proof 427's built. That is the only thing I do not understand, but when the other guys are spending upwards of 40 k on a built motor when they see 25k it seems like a steal.
