More hp on my LT4

Reply Subscribe

Thread Tools

Search this Thread

Feb 7, 2007 | 06:26 PM

#21

jonecap

Drifting

Joined: May 2005

Posts: 1,370

Likes: 1

From: Raleigh NC

Quote:

Originally Posted by vstol

Just curious I have a LT4 in my 64 Corvette GS, hot cam, custom side exit headers into 3 1/2" side pipes with a maxium flowing 2 1/2" flow through inserts, pcm for less OBE 1 programed computer. Any ideas what I might be looking at in HP? Its running but not on the road yet.

Any thoughts about what kind of gains I might see getting the heads ported or changing to AFR's? Thanks

Assuming it's stock displacement, I think it would be safe to say that you are over 400hp at the crank. With head porting or a good set of AFR's...425hp maybe.

Sounds sweet

Feb 7, 2007 | 07:04 PM

#22

vstol

Melting Slicks

Joined: Mar 2002

Posts: 2,526

Likes: 104

From: Stafford Va

Thanks, thats what I was thinking as well.

Feb 7, 2007 | 08:02 PM

#23

LT4BUD

Safety Car

Joined: Sep 2000

Posts: 3,524

Likes: 4

From: Hinckley Ohio

Quote:

Originally Posted by jonecap

Assuming it's stock displacement, I think it would be safe to say that you are over 400hp at the crank. With head porting or a good set of AFR's...425hp maybe.

Sounds sweet

LT4, stock bottom end, compcams 503, ported heads, EM headers, high flow cats, electric water pump. ATI damper, 58mm throttle body, & a few other tricks...

http://video.google.com/url?vidurl=h...m5JzzA3OMfnGMg

Feb 7, 2007 | 08:51 PM

#24

jonecap

Drifting

Joined: May 2005

Posts: 1,370

Likes: 1

From: Raleigh NC

Quote:

Originally Posted by LT4BUD

That beast sounds good and great numbers too! What are the specs on your cam? Did you loose much grunt down low?

Feb 7, 2007 | 09:01 PM

#25

88BlackZ-51

Race Director

Joined: May 2003

Posts: 10,749

Likes: 41

Quote:

Originally Posted by LT4BUD

395 rwhp. that is great!

Feb 7, 2007 | 10:27 PM

#26

bobmic93

Melting Slicks

Joined: Jul 2004

Posts: 2,695

Likes: 0

From: Chicago Illinois

Quote:

Originally Posted by LT4BUD

Those might be some of the best stock bottom end #s ive seen.

Youll have to race Jonecap down the track to see if your cars up to par in the 1/4 mile. I think you should be in 11 sec territory with that kinda hp.

Feb 8, 2007 | 07:49 AM

#27

LT4BUD

Safety Car

Joined: Sep 2000

Posts: 3,524

Likes: 4

From: Hinckley Ohio

Quote:

Originally Posted by bobmic93

Youll have to race Jonecap down the track to see if your cars up to par in the 1/4 mile. I think you should be in 11 sec territory with that kinda hp.

The car is, but not so sure about the driver.....

This was on street tires, fast lapped (motor too hot)---which I did because they had just treated the track........previous runs I had serious traction issures, so launch is from idle..

http://video.google.com/videoplay?do...99513405168910

I need to get back to the track now that I have drag radials....

Feb 8, 2007 | 05:28 PM

#28

jonecap

Drifting

Joined: May 2005

Posts: 1,370

Likes: 1

From: Raleigh NC

Quote:

Originally Posted by bobmic93

Those might be some of the best stock bottom end #s ive seen.

Youll have to race Jonecap down the track to see if your cars up to par in the 1/4 mile. I think you should be in 11 sec territory with that kinda hp.

Hey. He's closer to you than me