Need advice on a good 'fun now boost later' motor build
06-28-2019, 05:31 PM
#1
Need advice on a good 'fun now boost later' motor build I wasn't sure where to post this - sorry if this isn't the best place...
Looking for ideas on what I can build to have some fun in a street car and later either procharge it or turbo it. For simplicity sakes it will probably just be a procharger.
Of course, with Boost in general you're aiming for lower CR out of the motor so that instantly hits performance when running NA.
I was thinking of running a NA compression setup and then when I go boost, change to thicker head-gaskets, or have the cylinder heads honed out to decrease the CR
NA would like atleast 450 to the wheels - 500 preferable but understandable if that isn't realistic given my goals to boost later.
Even on boost, due to drivetrain limits, I probably will not exceed 700 WHP.
Any recommendation as to what motor I should start with?
Rebuild the LS1 (possibly stroke it?)
Start with an LQ4 or LQ9?
Maybe even go with a 408?
Looking for ideas on what I can build to have some fun in a street car and later either procharge it or turbo it. For simplicity sakes it will probably just be a procharger.
Of course, with Boost in general you're aiming for lower CR out of the motor so that instantly hits performance when running NA.
I was thinking of running a NA compression setup and then when I go boost, change to thicker head-gaskets, or have the cylinder heads honed out to decrease the CR
NA would like atleast 450 to the wheels - 500 preferable but understandable if that isn't realistic given my goals to boost later.
Even on boost, due to drivetrain limits, I probably will not exceed 700 WHP.
Any recommendation as to what motor I should start with?
Rebuild the LS1 (possibly stroke it?)
Start with an LQ4 or LQ9?
Maybe even go with a 408?
06-29-2019, 06:19 PM
#5
To do 450-500whp, stock ls1 cubes are going to make it more max effort NA. Honestly it's more about budget. A stock LS3 with a decent cam will do 450whp all day and more and will handle 800whp all day. Look at @Detoxx03 on here. That's a good platform and would meet your goals now and for the future without having to build a large cube motor.
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Detoxx03 (07-02-2019)
07-02-2019, 07:01 PM
#7
As for budget, I'm all for saving money but if it is going to cost me in the long run I'd rather do it right the first time if that makes sense.
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07-03-2019, 01:09 AM
#9
Would something like this be a good platform to begin with and throw in a cam?
https://www.ebay.com/itm/LS3-6-2L-V8...kAAOSwrttcp6BE
Will I need to do anything else? double roller timing chain? bearings? pushrods / lifters / valvesprings?
When going F.I. - the 10.7:1 CR was okay?
Did you need to do anything to the heads?
https://www.ebay.com/itm/LS3-6-2L-V8...kAAOSwrttcp6BE
Will I need to do anything else? double roller timing chain? bearings? pushrods / lifters / valvesprings?
When going F.I. - the 10.7:1 CR was okay?
Did you need to do anything to the heads?
07-03-2019, 06:39 AM
#10
Just out of curiosity, what can be done with the stock setup - I'm assuming with the mileage (220k) I'm going to need a rebuild. I'm okay with swapping if thats what is recommended.
As for budget, I'm all for saving money but if it is going to cost me in the long run I'd rather do it right the first time if that makes sense.
As for budget, I'm all for saving money but if it is going to cost me in the long run I'd rather do it right the first time if that makes sense.
07-03-2019, 08:56 AM
#11
Would something like this be a good platform to begin with and throw in a cam?
https://www.ebay.com/itm/LS3-6-2L-V8...kAAOSwrttcp6BE
Will I need to do anything else? double roller timing chain? bearings? pushrods / lifters / valvesprings?
When going F.I. - the 10.7:1 CR was okay?
Did you need to do anything to the heads?
https://www.ebay.com/itm/LS3-6-2L-V8...kAAOSwrttcp6BE
Will I need to do anything else? double roller timing chain? bearings? pushrods / lifters / valvesprings?
When going F.I. - the 10.7:1 CR was okay?
Did you need to do anything to the heads?
on pump is where I would stop before adding methanol injection. For sure do timing chain, pushrods, and springs if you are swapping camshafts. My heads are stock with arp bolts.
07-10-2019, 10:00 AM
#12
The compression is fine especially if you are gonna use e85. My puts out 980rwhp and I’m pumping it into the 11’s with the new build. 700rwhp
on pump is where I would stop before adding methanol injection. For sure do timing chain, pushrods, and springs if you are swapping camshafts. My heads are stock with arp bolts.
on pump is where I would stop before adding methanol injection. For sure do timing chain, pushrods, and springs if you are swapping camshafts. My heads are stock with arp bolts.
I was looking for the thread to your build but couldn't find it. What are you running as far as a cam is concerned and what about the supporting mods (pushrods, lifters, ect)?, and timing chain go? Noting that your heads are stock, you upgrade your valvetrain?
Would you recommend a similar cam for my build?
07-10-2019, 12:41 PM
#13
I'm going to go ahead and order the LS3 long block (just confirming before I make the purchase that I'm on the right track).
I was looking for the thread to your build but couldn't find it. What are you running as far as a cam is concerned and what about the supporting mods (pushrods, lifters, ect)?, and timing chain go? Noting that your heads are stock, you upgrade your valvetrain?
Would you recommend a similar cam for my build?
I was looking for the thread to your build but couldn't find it. What are you running as far as a cam is concerned and what about the supporting mods (pushrods, lifters, ect)?, and timing chain go? Noting that your heads are stock, you upgrade your valvetrain?
Would you recommend a similar cam for my build?
Stock lifters, stock timing chain, and manley pushrods and valve springs.
07-10-2019, 01:47 PM
#15
TECH Senior Member
iTrader: (7)
I would get a more complete junkyard motor before getting a "rebuilt" long block. The little things will add up fast to dress out a bare long block.
I prefer Gen IV engines...I prefer aluminum blocks for less weight. Having said all that, there are numerous 5.3, 6.0, and 6.2 liter options to choose from. All would be boost friendly down the road, but obviously a 5.3L would make less power than a 6.2L, NA.
Andrew
I prefer Gen IV engines...I prefer aluminum blocks for less weight. Having said all that, there are numerous 5.3, 6.0, and 6.2 liter options to choose from. All would be boost friendly down the road, but obviously a 5.3L would make less power than a 6.2L, NA.
Andrew
07-11-2019, 05:02 AM
#16
I would get a more complete junkyard motor before getting a "rebuilt" long block. The little things will add up fast to dress out a bare long block.
I prefer Gen IV engines...I prefer aluminum blocks for less weight. Having said all that, there are numerous 5.3, 6.0, and 6.2 liter options to choose from. All would be boost friendly down the road, but obviously a 5.3L would make less power than a 6.2L, NA.
Andrew
I prefer Gen IV engines...I prefer aluminum blocks for less weight. Having said all that, there are numerous 5.3, 6.0, and 6.2 liter options to choose from. All would be boost friendly down the road, but obviously a 5.3L would make less power than a 6.2L, NA.
Andrew
07-11-2019, 07:18 PM
#17
I prefer Gen IV engines...I prefer aluminum blocks for less weight. Having said all that, there are numerous 5.3, 6.0, and 6.2 liter options to choose from. All would be boost friendly down the road, but obviously a 5.3L would make less power than a 6.2L, NA.
Andrew
Andrew
Also, Texas Speed and Thomson Motorsports both recommended fairly built Iron 408's ... Would these choices be enough of a benefit over the LS3 to justify the much higher costs? I could probably foot it but if an LS3 could produce something within the ballpark I'm feeling I would save alot more money with the LS3 am I wrong?
07-14-2019, 11:55 AM
#18
TECH Senior Member
iTrader: (7)
Just curious here, with the exception of the intake manifold, wouldn't everything just swap over from my LS1? Or am I forgetting something? Most of my serpentine accessories, including even the A/C compressor and all the pulleys are fairly new.
I was considering a LQ9 aswell. How much would the extra weight hurt me and how difficult is it to offset?
Also, Texas Speed and Thomson Motorsports both recommended fairly built Iron 408's ... Would these choices be enough of a benefit over the LS3 to justify the much higher costs? I could probably foot it but if an LS3 could produce something within the ballpark I'm feeling I would save alot more money with the LS3 am I wrong?
I was considering a LQ9 aswell. How much would the extra weight hurt me and how difficult is it to offset?
Also, Texas Speed and Thomson Motorsports both recommended fairly built Iron 408's ... Would these choices be enough of a benefit over the LS3 to justify the much higher costs? I could probably foot it but if an LS3 could produce something within the ballpark I'm feeling I would save alot more money with the LS3 am I wrong?
An iron block adds 80 pounds, up to you to decide how detrimental that is.
Also up to you to decide the cost/benefits of a built 408...
Andrew
07-15-2019, 08:25 AM
#19
....
Also, Texas Speed and Thomson Motorsports both recommended fairly built Iron 408's ... Would these choices be enough of a benefit over the LS3 to justify the much higher costs? I could probably foot it but if an LS3 could produce something within the ballpark I'm feeling I would save alot more money with the LS3 am I wrong?
Also, Texas Speed and Thomson Motorsports both recommended fairly built Iron 408's ... Would these choices be enough of a benefit over the LS3 to justify the much higher costs? I could probably foot it but if an LS3 could produce something within the ballpark I'm feeling I would save alot more money with the LS3 am I wrong?
07-15-2019, 08:26 PM
#20
Both will need misc stuff to install in the F-Body as they are both long blocks.
If I kept the LS3 stock and used the stock cam, how would that respond to boost later? Or do you highly recommend upgrading the cam?