334" destroked LQ9 540hp vid inside.
#5
TECH Addict
iTrader: (1)
I can't watch the video at work. I am assuming this is something like a 4.03x3.25 setup. My personal ssumption is that this would be about a 450-475 hp engine installed. Which a 4.03x3.63 LQ9 could accomplish, just with a softer torque curve and a little more rpm. Exactly why I doubt the new Gen V's will be 5.5L. A short stroke big bore engine does not have enough inherent advantages in a street engine than maintaining the standard stroke. Just some random thoughts.
#8
TECH Veteran
iTrader: (12)
Join Date: Dec 2004
Location: Rockville, MD
Posts: 4,354
Likes: 0
Received 0 Likes
on
0 Posts
no accessories and no belt drive water pump. i would bet money that with the usual things added that it would bring the number down to around 500 or 490 at the fly and 420ish wheel.
#9
Launching!
iTrader: (1)
D&A competed in the 2011 Engine Masters competition with this engine. In the Feb 2012 Popular Hotrodding issue, there was a full description of all of the competitors combos.
The details given for this particular engine were:
- 6.0 iron block (4.030"), decked .050
- 4.8 crank (3.268"),
- 6" rod.
- Reworked Mahle 350sbc pistons
- nicely ported L92 heads,
- GM L92 dual plane intake.
- Crane Solid Roller, .649/.649, 232/240, 108LSA+5°
- Harland Sharp 1.7 rockers.
- 11.5 compression
Don and Andy have posted info about this engine here on LS1tech, SpeedTalk, ect.
Here is a pic of it at the 2011 Engine Masters competition.
The details given for this particular engine were:
- 6.0 iron block (4.030"), decked .050
- 4.8 crank (3.268"),
- 6" rod.
- Reworked Mahle 350sbc pistons
- nicely ported L92 heads,
- GM L92 dual plane intake.
- Crane Solid Roller, .649/.649, 232/240, 108LSA+5°
- Harland Sharp 1.7 rockers.
- 11.5 compression
Don and Andy have posted info about this engine here on LS1tech, SpeedTalk, ect.
Here is a pic of it at the 2011 Engine Masters competition.
Last edited by topbrent; 08-19-2012 at 12:30 AM. Reason: Clarification
#10
TECH Regular
iTrader: (17)
D&A competed in the 2011 Engine Masters competition with this engine. In the Feb 2012 Popular Hotrodding issue, there was a full description of all of the competitors combos.
The details given for this particular engine were:
- 6.0 iron block (4.030"), decked .050
- 4.8 crank (3.268"),
- 6" rod.
- Reworked Mahle 350sbc pistons
- nicely ported L92 heads,
- GM L92 dual plane intake.
- Crane cam. .649 232/240
- 11.5 compression
Don and Andy have posted info about this engine here on LS1tech, SpeedTalk, ect.
Here is a pic of it at the 2011 Engine Masters competition.
The details given for this particular engine were:
- 6.0 iron block (4.030"), decked .050
- 4.8 crank (3.268"),
- 6" rod.
- Reworked Mahle 350sbc pistons
- nicely ported L92 heads,
- GM L92 dual plane intake.
- Crane cam. .649 232/240
- 11.5 compression
Don and Andy have posted info about this engine here on LS1tech, SpeedTalk, ect.
Here is a pic of it at the 2011 Engine Masters competition.
#14
TECH Fanatic
iTrader: (10)
Join Date: Mar 2011
Location: Miami gardens FL 33055
Posts: 1,023
Likes: 0
Received 0 Likes
on
0 Posts
I say 1.62 hp per cube using only 11.5 comp with that small cam is excellent, i have experience, with short stroke engines and they ran very different, they can live you at the dig in a flash, so don't underestimate the numbers, will have about 460 rwhp on stick car, I'll love to drive...
Last edited by CAMSTER; 08-05-2012 at 01:27 PM.
#19
Teching In
Join Date: Sep 2010
Location: North Georgia
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Hi everyone.
A friend told me about this thread so I thought I would give a little more info as to why we built it the way we did.
As was mentioned by Brent we decided on the smaller cube engine because of the scoring system that is use at the engine masters competition.
We also were trying to build an engine that would perform better with a restrictive muffler that was used.
It seemed like an interesting combination so we went for it.
We did try the single plane intake that gmpp has for the L92 engine and made over 560 hp with that intake but the torque was down which hurt our overall score.
It was also something that some of our customers were interested in because they still love the way an old school 327 runs so we thought it would be interesting to see what the same basic bore and stroke would do with the new design.
I am in the process of breaking it down now and will post pictures of the parts used if anybody would like to see them. Also if there are anymore questions or comments lets have them.
Andy
A friend told me about this thread so I thought I would give a little more info as to why we built it the way we did.
As was mentioned by Brent we decided on the smaller cube engine because of the scoring system that is use at the engine masters competition.
We also were trying to build an engine that would perform better with a restrictive muffler that was used.
It seemed like an interesting combination so we went for it.
We did try the single plane intake that gmpp has for the L92 engine and made over 560 hp with that intake but the torque was down which hurt our overall score.
It was also something that some of our customers were interested in because they still love the way an old school 327 runs so we thought it would be interesting to see what the same basic bore and stroke would do with the new design.
I am in the process of breaking it down now and will post pictures of the parts used if anybody would like to see them. Also if there are anymore questions or comments lets have them.
Andy
#20
Old School Heavy
iTrader: (16)
Hey Andy, thanx for posting. I would love the see the two dyno graphs so we could compare the power curves between the dual plane and single plane. Many of us have seen tests and have experience with the Edelbrock Performer RPM cathedral port dual plane but not the GMPP dual plane.