Official Polk County thread!
Teching In
Joined: Aug 2010
Posts: 36
Likes: 1
From: Lakeland.FL
Mine has the LQ9 6.0L engine in it, not the LT engine. I still don't know a lot about the LS1 and LT1 engines but its a SBC and having built a bunch of 1st Gen. small blocks, I know that you can put a lot of "go fast" in them without a lot of work. Just make sure you are putting good parts in it and that 383 will be a road burner!
.Gerat looking car you bought 
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
If it works for you, that will be great! You said that you wanted to get into your new shop, so there is no rush on my part, just when it is convenient for you to do. Let me know. PM me when you get the chance.
Mine has the LQ9 6.0L engine in it, not the LT engine. I still don't know a lot about the LS1 and LT1 engines but its a SBC and having built a bunch of 1st Gen. small blocks, I know that you can put a lot of "go fast" in them without a lot of work. Just make sure you are putting good parts in it and that 383 will be a road burner!
And like he said lt's come with a major headache
I haven't had much trouble from mine (knock on wood)
They're just a pain to work on
I'm using all forged parts
I found a kit online for $900
Comes with everything
They only thing im a little nervous about is the crank
It's a scat 9000
The only thing in the kit that isn't forged
Some people say it ok
Some dont
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
I've never run a Scat 9000 but it is supposed to be good for a steet / strip engine. I don't know how much HP you are shooting for with your 383 but if you are building it to be "street friendly" the 9000 cast crank should be ok. Like any other performance engine, the best bet is to be sure you have a balanced assembly. I would think that either Scat or somewhere else on the internet should give a HP rating for it.
http://www.summitracing.com/parts/HA...855P/?rtype=10
and btw im glad you said this before i bought new lower control arms because i can just rise my car a tad with these!
Teching In
Joined: Aug 2010
Posts: 36
Likes: 1
From: Lakeland.FL
I don't know anything about the lq's
And like he said lt's come with a major headache
I haven't had much trouble from mine (knock on wood)
They're just a pain to work on
I'm using all forged parts
I found a kit online for $900
Comes with everything
They only thing im a little nervous about is the crank
It's a scat 9000
The only thing in the kit that isn't forged
Some people say it ok
Some dont
And like he said lt's come with a major headache
I haven't had much trouble from mine (knock on wood)
They're just a pain to work on
I'm using all forged parts
I found a kit online for $900
Comes with everything
They only thing im a little nervous about is the crank
It's a scat 9000
The only thing in the kit that isn't forged
Some people say it ok
Some dont
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
I've never run a Scat 9000 but it is supposed to be good for a steet / strip engine. I don't know how much HP you are shooting for with your 383 but if you are building it to be "street friendly" the 9000 cast crank should be ok. Like any other performance engine, the best bet is to be sure you have a balanced assembly. I would think that either Scat or somewhere else on the internet should give a HP rating for it.
this is my DD
im shootin for about 420rwhp
and everything is balanced
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
OK so these?
http://www.summitracing.com/parts/HA...855P/?rtype=10
and btw im glad you said this before i bought new lower control arms because i can just rise my car a tad with these!
http://www.summitracing.com/parts/HA...855P/?rtype=10
and btw im glad you said this before i bought new lower control arms because i can just rise my car a tad with these!
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
I don't know what you are running, manual or auto but a "rule of thumb" on figuring the difference from flywheel HP and RWHP is automatic trans you lose about 17% or 18% and manual trans you lose about 14% or 15%. This isn't exact by any means because there are so many things that cause HP drag getting to your wheels, but it gives you a good idea what your crank will be seeing. For example, a 500 HP engine with an auto trans would have about 415 RWHP.
Last edited by mbaker3; Oct 2, 2011 at 07:49 PM. Reason: Can't type worth a darn!!!
autos, actually have more loss than the 15-18%, more like 25%, I had a motor built and dyno'd, made 486hp at the crank, but with a 2600 stall and 700r4, with 3.42s a chassis dyno only produced 350rwhp.
once I get my car back together with a manual t56, it'll be back on a dyno to see what the rwhp is.
once I get my car back together with a manual t56, it'll be back on a dyno to see what the rwhp is.
I don't know what you are running, manual or auto but a "rule of thumb" on figuring the difference from flywheel HP and RWHP is automatic trans you lose about 17% or 18% and manual trans you lose about 14% or 15%. This isn't exact by any means because there are so many things that cause HP drag getting to your wheels, but it gives you a good idea what your crank will be seeing. For example, a 500 HP engine with an auto trans would have about 415 RWHP.
But it's a good piece of info to keep in mind
I'm running a stock t56
It was rebuilt about 10k miles ago
But I'll have a stage 2 clutch and 4:10 gears with the 383
Question:
What exactly is the purpose of a 3 a valve job?
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
autos, actually have more loss than the 15-18%, more like 25%, I had a motor built and dyno'd, made 486hp at the crank, but with a 2600 stall and 700r4, with 3.42s a chassis dyno only produced 350rwhp.
once I get my car back together with a manual t56, it'll be back on a dyno to see what the rwhp is.
once I get my car back together with a manual t56, it'll be back on a dyno to see what the rwhp is.
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
It is supposed to help create a smoother air flow into the cylinder and not cause as much turbulence as a single angle cut on the valve and head. I don't have proof otherwise, but I am not sure it does a whole lot better on a street engine. Yes, I'm sure that it will be better, but at low air flow at the low RPM's attained on the street, is it worth the extra machining cost? If you are looking for that last little bit of HP, go for it! 
It is supposed to help create a smoother air flow into the cylinder and not cause as much turbulence as a single angle cut on the valve and head. I don't have proof otherwise, but I am not sure it does a whole lot better on a street engine. Yes, I'm sure that it will be better, but at low air flow at the low RPM's attained on the street, is it worth the extra machining cost? If you are looking for that last little bit of HP, go for it!
The guy never explained exactly what it was to me
But it didn't really matter to me
It would have cost me almost $300 to have mine remachined
I got these shipped to my door for $400
I was just wondering exactly what it was
Thanks!
On The Tree
Joined: Aug 2011
Posts: 131
Likes: 0
From: Lakeland, Fl
I read my post again and it kinda sounds like I am against them. I'm not! Anytime that you can get more HP is a good thing! I was trying to say that it's not a show stopper on a good street machine if you don't spend the money to do it. Don't forget to take pictures of your build!
I was trying to say that it's not a show stopper on a good street machine if you don't spend the money to do it. Don't forget to take pictures of your build! Teching In
Joined: Aug 2010
Posts: 36
Likes: 1
From: Lakeland.FL
"Well I bought a set of heads that were ported, re machined and had the valve job"
This is where you will likely see the best gains with a LT1.What cam are you going with?
Dont forget to up the size on the injector's.The 24lb stock will not keep up with a large cam
This is where you will likely see the best gains with a LT1.What cam are you going with?
Dont forget to up the size on the injector's.The 24lb stock will not keep up with a large cam
And I know about re injectors
Going with a 32 or 36#
Not sure yet
Recommendation?
I read my post again and it kinda sounds like I am against them. I'm not! Anytime that you can get more HP is a good thing! I was trying to say that it's not a show stopper on a good street machine if you don't spend the money to do it. Don't forget to take pictures of your build!
I was trying to say that it's not a show stopper on a good street machine if you don't spend the money to do it. Don't forget to take pictures of your build!Just can't figure out how to upload them on here ;p
Hell I can't even post a classified add for some reason