440cid LS7 information needed
Thread Starter
Burning Brakes
Joined: Oct 2003
Posts: 959
Likes: 12
From: California CA
440cid LS7 information needed
Hi guys,
Just starting some initial research on 440ci long / short blocks. Short block option would use locally (Aussie) ported LS7 heads. As far as I can see, there are a few off-the-shelf options:
LME 440
Texas Speed 440
SDPC 440
I am wanting to put this in a M6 C5 Corvette for 70% track / 20% street use. Need info on high compression N/A setups that are not too sick in traffic. This would be using a custom twin-plenum ITB manifold. What are realistic rwhp goals and street manners? Fuel economy, max RPM etc?
Any comments from members with the above supplier engines?
Just starting some initial research on 440ci long / short blocks. Short block option would use locally (Aussie) ported LS7 heads. As far as I can see, there are a few off-the-shelf options:
LME 440
Texas Speed 440
SDPC 440
I am wanting to put this in a M6 C5 Corvette for 70% track / 20% street use. Need info on high compression N/A setups that are not too sick in traffic. This would be using a custom twin-plenum ITB manifold. What are realistic rwhp goals and street manners? Fuel economy, max RPM etc?
Any comments from members with the above supplier engines?
Former Vendor
Joined: Oct 2006
Posts: 2,050
Likes: 33
From: Cumming Georgia
We have built quite a few 440 LS7 combinations. We typically run TrickFlow 235cc cathedral port cylinder heads matched to a ported FAST intake manifold. As far as numbers are concerned we tend to make approximately 600rwhp and 550rwtq. This is with a mid 250s duration camshaft and 11.1:1 compression. There are atleast three members on this forum that run our 440 LS7 and absolutely love it!!!
Feel free to give me a call or shoot me a PM if you have any questions or would like to discuss an engine for your specific goals.
Feel free to give me a call or shoot me a PM if you have any questions or would like to discuss an engine for your specific goals.
Last edited by Ron@Vengeance Racing; Jun 26, 2009 at 11:53 AM.
Instructor
Joined: Jun 2006
Posts: 204
Likes: 0
From: MAGNOLIA TX
Ls7 440
I just had one built by Mast Motorsports. Mild cam , 11.2 :1 compression , Mast LS7 cnc'd heads that flow 390cfm! Its not in the car yet, but it made 665/ 560 on their Superflow Engine Dyno . Thats with a small cam and stock , unported LS7 intake mainifold. They can make BIG power. They are competitive in price and offer a 18 month warranty. Best of luck with your build !!
Drifting
Joined: Apr 2003
Posts: 1,389
Likes: 10
From: Jacksonville FL
We have built quite a few 440 LS7 combinations. We typically run TrickFlow 235cc cathedral port cylinder heads matched to a ported FAST intake manifold. As far as numbers are concerned we tend to make approximately 600rwhp and 550rwtq. This is with a mid 250s duration camshaft and 11.1:1 compression. There are atleast three members on this forum that run our 440 LS7 and absolutely love it!!!
Feel free to give me a call or shoot me a PM if you have any questions or would like to discuss an engine for your specific goals.
Feel free to give me a call or shoot me a PM if you have any questions or would like to discuss an engine for your specific goals.
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Contact Shawn at VA Speed. All the machine work is done in-house. Shawn is building my Darton sleeved LS2 block 427 now.
http://forums.corvetteforum.com/c5-t...ct-begins.html
http://forums.corvetteforum.com/c5-t...ct-begins.html
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Former Vendor
Joined: Oct 2006
Posts: 2,050
Likes: 33
From: Cumming Georgia
I'm one of the three and I do love my motor. I'm just over two years without a single issue. The car drives great. It's been on long trips and many top end runs. I would strongly recommend Vengeance, and not just for the performance. Their customer service was top notch and they continue to awnser any questions I have quickly.
Any luck on that nitrous install my friend?? Glad to hear the combo is still doing well for you!!! Thanx for the kind words.
Drifting
Joined: Apr 2003
Posts: 1,389
Likes: 10
From: Jacksonville FL
I'll be sending the car back your way for the install shortly. There are a couple of other things I'm hoping to do at the same time, but the car is running great. I'll e-mail soon so we can make a plan on getting everything done.
On a side note, the wife bought me a HSW Microedge+ controller for Christmas! Totaly unexpected. She complains a bit, but she's a keeper.
On a side note, the wife bought me a HSW Microedge+ controller for Christmas! Totaly unexpected. She complains a bit, but she's a keeper.
Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
Hi guys,
Just starting some initial research on 440ci long / short blocks. Short block option would use locally (Aussie) ported LS7 heads. As far as I can see, there are a few off-the-shelf options:
LME 440
Texas Speed 440
SDPC 440
I am wanting to put this in a M6 C5 Corvette for 70% track / 20% street use. Need info on high compression N/A setups that are not too sick in traffic. This would be using a custom twin-plenum ITB manifold. What are realistic rwhp goals and street manners? Fuel economy, max RPM etc?
Any comments from members with the above supplier engines?
Just starting some initial research on 440ci long / short blocks. Short block option would use locally (Aussie) ported LS7 heads. As far as I can see, there are a few off-the-shelf options:
LME 440
Texas Speed 440
SDPC 440
I am wanting to put this in a M6 C5 Corvette for 70% track / 20% street use. Need info on high compression N/A setups that are not too sick in traffic. This would be using a custom twin-plenum ITB manifold. What are realistic rwhp goals and street manners? Fuel economy, max RPM etc?
Any comments from members with the above supplier engines?
Advanced
Joined: May 2003
Posts: 73
Likes: 0
From: Huntsville alabama
Sprinter - I am also one of the Vengence Racing LS7 440ci owners. I made 603 RWHP and 563 RWTQ; my engine has been in for a little over one year with no issues at all. I use the car as more of a weekend warrior car than a daily driver. As far as performance and customer service I have used 3 different tuners in the last 5 years for performance modifications and The Vengence team goes above and beyond any others that I have dealt with. I highly recommend them for any work you are thinking of doing. If you have any specific questions; feel free to contact me.
