New LT1 to LT4 conversion package
Thread Starter
Racer
Joined: Sep 2004
Posts: 400
Likes: 4
From: Phoenix AZ
New LT1 to LT4 conversion package
Take a look at this package. LT1 to LT4 conversion with CNC aluminium heads. For those that know, is this a good deal?
http://www.sdpc2000.com/catalog/3473...m-and-CNC-Head
http://www.sdpc2000.com/catalog/3473...m-and-CNC-Head
Melting Slicks
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
So 3 grand for parts ,probably 2 grand labor. What kind of increases in hp & tq will you see with this? Whats a stock lt-4 have ? 330 to 350hp. I think thats a lot of doe for 50hp upgrade. It might be a good deal, I just expect more for my 5 Gs.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by bobmic93
So 3 grand for parts ,probably 2 grand labor. What kind of increases in hp & tq will you see with this? Whats a stock lt-4 have ? 330 to 350hp. I think thats a lot of doe for 50hp upgrade. It might be a good deal, I just expect more for my 5 Gs.
Melting Slicks
Joined: Jul 2004
Posts: 2,695
Likes: 0
From: Chicago Illinois
Originally Posted by Zix
This package will net more power than a stock LT4 because they are CNC ported LT4 heads, and the LT4 Hot Cam is a nice bump up from the standard LT4 cam. With the stock exhaust manifolds in place you'll probably see around 340RWHP, get a set of longtubes and you'll be good for the 355-365RWHP area. I would say it's a pretty good price and it doesn't look like there is a core charge at all so you could sell your original LT1 heads and intake and get a little bit of cash back.
Pro
Joined: Oct 2004
Posts: 653
Likes: 10
From: Walton Kentucky
Guys,
You can buy the Hot Cam Kit for $489 from SamTaylor and get the heads done from Bob at Precision Porting for $1400, buy some Impalla SS head gaskets for $25, LT4 intake for $220 and they you save $900.
That is the direction I would go.
You can buy the Hot Cam Kit for $489 from SamTaylor and get the heads done from Bob at Precision Porting for $1400, buy some Impalla SS head gaskets for $25, LT4 intake for $220 and they you save $900.
That is the direction I would go.
Last edited by tvetta; Dec 24, 2004 at 07:22 AM.
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Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by tvetta
Guys,
You can buy the Hot Cam Kit for $489 from SamTaylor and get the heads done from Bob at Performance Porting for $1400, buy some Impalla SS head gaskets for $25, LT4 intake for $220 and they you save $900.
That is the direction I would go.
You can buy the Hot Cam Kit for $489 from SamTaylor and get the heads done from Bob at Performance Porting for $1400, buy some Impalla SS head gaskets for $25, LT4 intake for $220 and they you save $900.
That is the direction I would go.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
I got the LT4 heads and intake new for about $1100.
Getting them ported, plus rockers, custom cam, gaskets should cost me less than $1500. And then I've got a custom cam vs. the hot cam and possibly better porting.
Looking at it another way, I think you can get the basic LT4 conversion kit (unported) for about $2k, then you could get them ported and a custom cam for less than $1k.
So no it doesn't look like anything special. Perhaps more convenient than the other options.
There's also a lack of detail in the desription. For instance what springs are they using?
Getting them ported, plus rockers, custom cam, gaskets should cost me less than $1500. And then I've got a custom cam vs. the hot cam and possibly better porting.
Looking at it another way, I think you can get the basic LT4 conversion kit (unported) for about $2k, then you could get them ported and a custom cam for less than $1k.
So no it doesn't look like anything special. Perhaps more convenient than the other options.
There's also a lack of detail in the desription. For instance what springs are they using?
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by steve9899
I got the LT4 heads and intake new for about $1100.
Getting them ported, plus rockers, custom cam, gaskets should cost me less than $1500. And then I've got a custom cam vs. the hot cam and possibly better porting.
Looking at it another way, I think you can get the basic LT4 conversion kit (unported) for about $2k, then you could get them ported and a custom cam for less than $1k.
So no it doesn't look like anything special. Perhaps more convenient than the other options.
There's also a lack of detail in the desription. For instance what springs are they using?
Getting them ported, plus rockers, custom cam, gaskets should cost me less than $1500. And then I've got a custom cam vs. the hot cam and possibly better porting.
Looking at it another way, I think you can get the basic LT4 conversion kit (unported) for about $2k, then you could get them ported and a custom cam for less than $1k.
So no it doesn't look like anything special. Perhaps more convenient than the other options.
There's also a lack of detail in the desription. For instance what springs are they using?
I had my LT4 heads ported a while ago, and it cost quite a bit more than that...granted they are set up for a big-inch motor that being installed next month...but the port work alone cost me $1250 (stage 4 flows well over 300CFM) and that's not including any parts (valves, guides, etc). I could have got them a little cheaper for the 350 bottom end, but I didn't want to have to do them again.
Anyway, like I said, from my point of view this is a decently priced package, and it comes with just about everything...except I'd probably add in some ARP bolts.
EDIT: as for the springs...I would assume the ones that come with the Hot Cam kit as that is what they are including I beleive
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by cprgmr
"our own CNC ported LT4 cylinder heads"
This kind of scares me. Since when did Scoggin Dickey enter the CNC head porting business? Aren't they a dealership?
This kind of scares me. Since when did Scoggin Dickey enter the CNC head porting business? Aren't they a dealership?
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Originally Posted by Zix
I would like to see flow sheets however.
Making crate engines and investing in multi-million dollar CNC machines are a little different. I agree though - if they can produce good flow numbers, I'll give them the benefit of the doubt!
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by cprgmr
Making crate engines and investing in multi-million dollar CNC machines are a little different. I agree though - if they can produce good flow numbers, I'll give them the benefit of the doubt!
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 0
From: High Plains Drifter Fayetteville, AR
Scoggin-Dickey has a fully equipped machine shop that does all of their work, from CNC to assembling custom crate engines. I worked there last year 
Heads are probably done on the rottler CNC.
Heads are probably done on the rottler CNC.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by JCAIRE2
Scoggin-Dickey has a fully equipped machine shop that does all of their work, from CNC to assembling custom crate engines. I worked there last year Heads are probably done on the rottler CNC.
Heads are probably done on the rottler CNC.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Originally Posted by Zix
You're going to get them ported, plus rockers and a custom cam for under $1500? That's pretty cheap, who's doing the work? What kind of flow numbers are you expecting? Either way that's a good price!
His stage 1 porting is $750. He's getting 255/180 from LT1 heads with this package. Custom cam is another $350.
I could go to somebody local and get it done for less than that, but I'd prefer to go with somebody with proven results with LTx heads.
