LS3 Head Cam Swap - Parts List
06-03-2018, 05:10 PM
#41
Le Mans Master
A couple of questions about cooling.
First, GPI offers a heat shield deal on the bottom of your intake manifold that supposedly helps with heat soak around the intake air. Anyone have experience with this? Is it something worth doing? I could definitley see where it might knock a few degrees off IAT's.
Second, what do you guys think about the z51 > z06 oil cooler upgrade? I already have a z06 oil cooler laying around. Just wondering if I should sell it or install it.
Third, 160 degree t stat? Alot of people argue about these, but I see the value. It should definitely keep your AVERAGE temp for a 30 minute hpde session down. I'm not going to be running any endurance races, so I feel like this could be valuable for me.
Fourth, anyone have experience with upgraded radiator or fans? Is this overkill for my application? I realize I'm not going to be overheating with this setup and my use case, but I'd really like to minimize heat while running hard, to prevent the PCM from pulling too much timing due to IAT's.
Any other cooling suggestions?
Daniel
First, GPI offers a heat shield deal on the bottom of your intake manifold that supposedly helps with heat soak around the intake air. Anyone have experience with this? Is it something worth doing? I could definitley see where it might knock a few degrees off IAT's.
Second, what do you guys think about the z51 > z06 oil cooler upgrade? I already have a z06 oil cooler laying around. Just wondering if I should sell it or install it.
Third, 160 degree t stat? Alot of people argue about these, but I see the value. It should definitely keep your AVERAGE temp for a 30 minute hpde session down. I'm not going to be running any endurance races, so I feel like this could be valuable for me.
Fourth, anyone have experience with upgraded radiator or fans? Is this overkill for my application? I realize I'm not going to be overheating with this setup and my use case, but I'd really like to minimize heat while running hard, to prevent the PCM from pulling too much timing due to IAT's.
Any other cooling suggestions?
Daniel
On a cool day, temps wouldn't get over 170-175. That's too cool in my book. I'll probably do a 180 or 185 stat on my current Vette. It won't have a supercharger's heat exchanger ahead of the radiator so I'm thinking the stock rad will be fine. If I did much roundy round racing, I'd upgrade the rad though.
Last edited by old motorhead; 06-03-2018 at 05:12 PM.
06-03-2018, 08:36 PM
#42
Racer
That said, I have a set of damn near new Morels that I won't be using. If interested, PM me you email for pictures.
KW
06-03-2018, 10:03 PM
#43
Burning Brakes
I could see the 160 thermostat possibly useful for roadracing for the reasons you listed.
i would get a dewitts as well. They cool a lot better than stock and fit great.
If someone’s car stays at their thermostat rating then they don’t need more cooling. But if it gets warm (and road racing sure could do that) you’ll want to get one. And, unlike other vehicles, I found that the c6 radiator and fan is a royal pain to remove so I decided to upgrade to a Dewitt’s while mine was out for a cam.
i would get a dewitts as well. They cool a lot better than stock and fit great.
If someone’s car stays at their thermostat rating then they don’t need more cooling. But if it gets warm (and road racing sure could do that) you’ll want to get one. And, unlike other vehicles, I found that the c6 radiator and fan is a royal pain to remove so I decided to upgrade to a Dewitt’s while mine was out for a cam.
06-05-2018, 10:19 AM
#44
I could see the 160 thermostat possibly useful for roadracing for the reasons you listed.
i would get a dewitts as well. They cool a lot better than stock and fit great.
If someone’s car stays at their thermostat rating then they don’t need more cooling. But if it gets warm (and road racing sure could do that) you’ll want to get one. And, unlike other vehicles, I found that the c6 radiator and fan is a royal pain to remove so I decided to upgrade to a Dewitt’s while mine was out for a cam.
i would get a dewitts as well. They cool a lot better than stock and fit great.
If someone’s car stays at their thermostat rating then they don’t need more cooling. But if it gets warm (and road racing sure could do that) you’ll want to get one. And, unlike other vehicles, I found that the c6 radiator and fan is a royal pain to remove so I decided to upgrade to a Dewitt’s while mine was out for a cam.
Is the dewitts lighter? And does it combine the engine and oil cooling into a single unit?
Daniel
06-05-2018, 10:56 AM
#45
Le Mans Master
I liked it because of the above reason and also, my engine oil got to operating temp quicker in cold weather. I never road raced that Vette, so have no idea how effective the internal cooler on the Dewitts was compared to the stock air/oil cooler. If you wanted even more engine oil cooling, you could run both of them in series.
06-05-2018, 11:41 AM
#46
Burning Brakes
Exactly. You can get it in any configuration you want, including an exact stock replacement.
The weight is comparable although that is just by feel and not trying to compare them. The coolant capacity is enlarged though so you have more weight in fluid but it is a no brained tradeoff for more cooling (for me!)
The weight is comparable although that is just by feel and not trying to compare them. The coolant capacity is enlarged though so you have more weight in fluid but it is a no brained tradeoff for more cooling (for me!)
07-07-2018, 01:04 AM
#47
Exactly. You can get it in any configuration you want, including an exact stock replacement.
The weight is comparable although that is just by feel and not trying to compare them. The coolant capacity is enlarged though so you have more weight in fluid but it is a no brained tradeoff for more cooling (for me!)
The weight is comparable although that is just by feel and not trying to compare them. The coolant capacity is enlarged though so you have more weight in fluid but it is a no brained tradeoff for more cooling (for me!)
Thanks!
07-10-2018, 03:46 PM
#48
Get a Powerbond HB over ATI. Both great choices, and one is half the price. Also, why go 10% underdrive?
07-10-2018, 06:43 PM
#49
i ended up getting the ati for bear the same price through waiting on just the right Ebay coupon. Sounds lame but it’s true. I went 10% because ive seen enough from people who I believe know what they’re talking about to think that a.) 25% May cause voltage issues, and more importantly b.) I’ve been told that it’s mathematically provable that the 25% does not have enough mass to perform the balancing/dampening job.
07-10-2018, 10:15 PM
#50
Burning Brakes
i ended up getting the ati for bear the same price through waiting on just the right Ebay coupon. Sounds lame but it’s true. I went 10% because ive seen enough from people who I believe know what they’re talking about to think that a.) 25% May cause voltage issues, and more importantly b.) I’ve been told that it’s mathematically provable that the 25% does not have enough mass to perform the balancing/dampening job.
07-11-2018, 03:46 PM
#51
Drifting
Sorry, not on here much these days. If it already hasn't been answered, it helps the HB from overspinning. Probably wont do much for your current setup, but its more or less cheap insurance in case you end up putting a blower on the car. It's one of those things that since you are already in there doing the work, might as well take an extra step just in case.
07-11-2018, 09:07 PM
#52
yeah i think i lucked out and grabbed it on a 20% coupon from the summit ebay store. Those coupons are no joke. now if only someone on ebay would sell johnson lifters.
07-28-2018, 02:36 PM
#53
Picked up a rod length checker. I saw a trick flow youtube video, and the tech was using an angled torque wrench on the head bolts. Anyone know where I could pick one up for a decent price?
Daniel
Daniel
08-03-2018, 10:12 AM
#54
am I going to need upgraded fuel pump and injectors? The experts that I talk to all agree that I'm on the fence with this setup, but some say I'll be fine while other say I need to replace injectors, while others say I need to replace both injectors and fuel pump
08-03-2018, 11:43 AM
#55
Racer
Member Since: Sep 2013
Location: coconut creek, fl
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where you at with this project are you doing the work? I am about to send my stock ls3 heads to texas speed for cnc port job
what you plan on compression? I am thinking of milling heads .30 and .40 head gaskets that should be over 11:1
I plan to keep the stock injectors and fuel pump should be fine with no power adder.
what you plan on compression? I am thinking of milling heads .30 and .40 head gaskets that should be over 11:1
I plan to keep the stock injectors and fuel pump should be fine with no power adder.
08-04-2018, 01:19 AM
#57
Racer
My 1995 Impala with a heads/cam LS3 is now putting down just short of 500hp to the wheels with stock injectors and a Walbro 255 lb/hr pump. I had to upgrade the pump because the OEM B-body pumps can't feed a LS3.
My 2014 SS with a stroker LS3 puts out 550hp to the wheels with the stock fuel pump.
So......you can pony up the $$$$ for a pump and injectors, but I can't see that as being necessary.
KW
My 2014 SS with a stroker LS3 puts out 550hp to the wheels with the stock fuel pump.
So......you can pony up the $$$$ for a pump and injectors, but I can't see that as being necessary.
KW
08-04-2018, 11:47 AM
#58
Racer
Member Since: Sep 2013
Location: coconut creek, fl
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And if you have a shop doing the work I be labor to install a fuel pump will cost more then the heads/cam swap, lol
I wouldn't even bother upgrading the radiato unless you plan on a blower. thermostat, and tune the fans to come on sooner it will run cooler
I wouldn't even bother upgrading the radiato unless you plan on a blower. thermostat, and tune the fans to come on sooner it will run cooler