[Z06] longevity
03-19-2018, 05:24 PM
#1
longevity
hey guys quick question longevity trying to make this engine last 100k miles (not on 300shot lols). So my question the 427 is a 4.125 bore and a 4 inch stroke. What would happen let’s say if I went to a bigger bore and smaller stroke? Or maybe the other way is better? Thought this was a good question, also curious.
03-19-2018, 06:04 PM
#3
You really need to specify your needs. Is the car going to be thrashed on or is it a daily driver that a little old lady drives to church.
If I was looking for a daily driver LS7 that was never going to the track and was only interested in the motor lasting for 100K miles or more, I'd start by putting in nice heavy solid stem valves that a wookie couldn't break and understand that 7000 RPMs ain't gonna happen. Then build a second set of heads for thrashing duty
Same thing goes with big goon camshafts in daily drivers. In my opinion, not a good combination. The more radical the engine, the fewer miles you should expect from it without service
Food for thought. The most radical drag engines get less then a mile on them before they are torn down
If I was looking for a daily driver LS7 that was never going to the track and was only interested in the motor lasting for 100K miles or more, I'd start by putting in nice heavy solid stem valves that a wookie couldn't break and understand that 7000 RPMs ain't gonna happen. Then build a second set of heads for thrashing duty
Same thing goes with big goon camshafts in daily drivers. In my opinion, not a good combination. The more radical the engine, the fewer miles you should expect from it without service
Food for thought. The most radical drag engines get less then a mile on them before they are torn down
03-19-2018, 06:39 PM
#4
Team Owner
hey guys quick question longevity trying to make this engine last 100k miles (not on 300shot lols). So my question the 427 is a 4.125 bore and a 4 inch stroke. What would happen let’s say if I went to a bigger bore and smaller stroke? Or maybe the other way is better? Thought this was a good question, also curious.
For me...AHP heads w/MS90 guides, stock cam, stock tune. I have no doubts my engine will live to see 100K+.
For you...get your new CNC motor all sorted out, keep your AHP heads, MSD/NW combo. Go much less aggressive on the cam this go around...like .630 max lift. Look at Cam Motion stuff, or the CPR Alpha, or new TSP cams. Get a safe conservative tune...and don't be concerned about HP numbers any longer.
03-19-2018, 06:58 PM
#6
LS7 supercharged, big cam, 200 shot, 300 shot, decent mpg, 100k miles - you're all over the place. You should have just left your car alone and you'd be able to drive it today - in 10 years you'll see that.
03-19-2018, 09:29 PM
#7
03-19-2018, 09:35 PM
#8
Read this before? http://www.superchevy.com/how-to/vem...oke-of-genius/
For me...AHP heads w/MS90 guides, stock cam, stock tune. I have no doubts my engine will live to see 100K+.
For you...get your new CNC motor all sorted out, keep your AHP heads, MSD/NW combo. Go much less aggressive on the cam this go around...like .630 max lift. Look at Cam Motion stuff, or the CPR Alpha, or new TSP cams. Get a safe conservative tune...and don't be concerned about HP numbers any longer.
For me...AHP heads w/MS90 guides, stock cam, stock tune. I have no doubts my engine will live to see 100K+.
For you...get your new CNC motor all sorted out, keep your AHP heads, MSD/NW combo. Go much less aggressive on the cam this go around...like .630 max lift. Look at Cam Motion stuff, or the CPR Alpha, or new TSP cams. Get a safe conservative tune...and don't be concerned about HP numbers any longer.
you put me to peace.....lol good thing btw. You are right just gonna have the block built for a 1000hp boosted or nos for the future. Slap my ahp heads a Stock intake and TB a haltech intake or maybe I’ll make one lol. And a reliable big meaty cam (reliable side) with my B and B headers.
Pay some more bills off then
add Mamo ported msd,nw102,2 inch headers, new custom cam for nos or boost.
got a LT-1sc clutch guess from here is torque tube axles and diff waiting for that 4.10
honestly feels weird to make a car built for the track my drag car so more than likely stick to a NOS setup
03-19-2018, 09:38 PM
#9
its all true from what you are saying but I’m young and dumb and we live to learn
but idk I like racing and building these things and socialize about it and learn and read what you guys have for experiences on the forums and would like to experience my self.hmmmm a 454 4 liter whipple on race gas with a 300 shot would seem really really bad ***.
Last edited by 427V8BB; 03-19-2018 at 09:39 PM.
03-19-2018, 09:39 PM
#10
Read this before? http://www.superchevy.com/how-to/vem...oke-of-genius/
For me...AHP heads w/MS90 guides, stock cam, stock tune. I have no doubts my engine will live to see 100K+.
For you...get your new CNC motor all sorted out, keep your AHP heads, MSD/NW combo. Go much less aggressive on the cam this go around...like .630 max lift. Look at Cam Motion stuff, or the CPR Alpha, or new TSP cams. Get a safe conservative tune...and don't be concerned about HP numbers any longer.
For me...AHP heads w/MS90 guides, stock cam, stock tune. I have no doubts my engine will live to see 100K+.
For you...get your new CNC motor all sorted out, keep your AHP heads, MSD/NW combo. Go much less aggressive on the cam this go around...like .630 max lift. Look at Cam Motion stuff, or the CPR Alpha, or new TSP cams. Get a safe conservative tune...and don't be concerned about HP numbers any longer.
havent read it yet ill do it rn.
Wtf is this a rear engine build or a marine engine lol I want my intake facing the other way wonder how many wtf I would
get opening my hood
Last edited by 427V8BB; 03-19-2018 at 09:41 PM.
03-20-2018, 12:45 AM
#11
Melting Slicks
Member Since: May 2005
Location: Las Vegas Nevada
Posts: 3,461
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St. Jude Donor '08
I’m far from an expert in regards to cars and motors, but if you are going to do all this stuff to your car, and want to get to 100,000 miles, I hope you have 99,000 miles on it now. Somethings going to blow, and I think it will be your motor. I know you said you were young and want to do all these things, but step back for a moment and listen to the people on this forum who have all this knowledge. Many of them have learned the hard way, learn from them.
But, if you decide to build this monster, keep us up to date.
But, if you decide to build this monster, keep us up to date.
03-20-2018, 02:08 AM
#13
Pro
I think you need to really sit down and find out what you really want. After you decide %100 what it is then you make a game plan. Changing your mind a 100 times is just going to cost you time and money and won’t get you anywhere. If it were me I would do a mild cam, keep your heads and long tubes. With a forged motor it should last a long time. Keep up with the maintenance and you’ll be fine. As above check out the alpha cam makes great power and seems to drive really well(I’ve read). Good luck.
03-20-2018, 02:28 AM
#14
[QUOTE=LV Vette;1596818841]I’m far from an expert in regards to cars and motors, but if you are going to do all this stuff to your car, and want to get to 100,000 miles, I hope you have 99,000 miles on it now. Somethings going to blow, and I think it will be your motor. I know you said you were young and want to do all these things, but step back for a moment and listen to the people on this forum who have all this knowledge. Many of them have learned the hard way, learn from them.
But, if you decide to build this monster, keep us up to date.[/QUOT
Guys that was a joke lol. I already know what I need to make it last those were all thoughts but I was stuck to a budget and it narrowed the decisions down but realistically. I’m having my ls7 darton sleeeve shortblock go handle 1000whp it’s gonna be installed with a stock cam for now with stock top end with my race ported heads of course I’m even sellin my headers and using my gutted stock OEM exhaust to save more money. Than down the road I’ll do a cam a Mamo intake nw102 and a haltech intake with 2inch looks or arhs and have a 1200whp e85 fuel system to just not worry about it and 1300cc injectors on three settings for the nitrous 150-200-300 on e85 and c16 for nitrous. I won’t even be using it much maybe only for the monthly drag strip day for 8-12 runs and some times on the free way. I wouldent be wasting 75$ a fill up lol. If I personally was rich hahahaha **** I’d be daily driving my car with alchohol lol
But, if you decide to build this monster, keep us up to date.[/QUOT
Guys that was a joke lol. I already know what I need to make it last those were all thoughts but I was stuck to a budget and it narrowed the decisions down but realistically. I’m having my ls7 darton sleeeve shortblock go handle 1000whp it’s gonna be installed with a stock cam for now with stock top end with my race ported heads of course I’m even sellin my headers and using my gutted stock OEM exhaust to save more money. Than down the road I’ll do a cam a Mamo intake nw102 and a haltech intake with 2inch looks or arhs and have a 1200whp e85 fuel system to just not worry about it and 1300cc injectors on three settings for the nitrous 150-200-300 on e85 and c16 for nitrous. I won’t even be using it much maybe only for the monthly drag strip day for 8-12 runs and some times on the free way. I wouldent be wasting 75$ a fill up lol. If I personally was rich hahahaha **** I’d be daily driving my car with alchohol lol
03-20-2018, 02:29 AM
#15
I think you need to really sit down and find out what you really want. After you decide %100 what it is then you make a game plan. Changing your mind a 100 times is just going to cost you time and money and won’t get you anywhere. If it were me I would do a mild cam, keep your heads and long tubes. With a forged motor it should last a long time. Keep up with the maintenance and you’ll be fine. As above check out the alpha cam makes great power and seems to drive really well(I’ve read). Good luck.
Last edited by 427V8BB; 03-20-2018 at 02:34 AM.
03-20-2018, 02:31 AM
#16
03-20-2018, 02:56 AM
#17
If you're going to buy popcorn make sure you get some that will feed 100,000 people with NO complaints.
Or maybe see if you can make some that will win at your local county fair and blow away the judges?
On third thought, maybe get some popcorn that can be mass marketed?
Actually why not just get a popcorn that can do all 3? Anyone have any experience with that?
Or maybe see if you can make some that will win at your local county fair and blow away the judges?
On third thought, maybe get some popcorn that can be mass marketed?
Actually why not just get a popcorn that can do all 3? Anyone have any experience with that?
03-20-2018, 03:57 AM
#18
Melting Slicks
There are lots of stock engines that when setup properly will achieve 100k on top of whatever you got it with used.
Just have to know what to do with it. You can use a long duration cam you just can't run alot of lift. A turbo adds economy and power in the most reliable manner. Water and methanol act as safety measures, causing even 93 octane to jump dramatically to around 115 octane under the right conditions. It is extremely possible to get OEM engines to live at those elevated power levels if every piece of the puzzle is in place.
For ex. here is a stock bottom end 6.0L in a truck going 9 seconds
Seriously if a regular truck can do that ...
Just have to know what to do with it. You can use a long duration cam you just can't run alot of lift. A turbo adds economy and power in the most reliable manner. Water and methanol act as safety measures, causing even 93 octane to jump dramatically to around 115 octane under the right conditions. It is extremely possible to get OEM engines to live at those elevated power levels if every piece of the puzzle is in place.
For ex. here is a stock bottom end 6.0L in a truck going 9 seconds
Seriously if a regular truck can do that ...
Last edited by Kingtal0n; 03-20-2018 at 12:32 PM.
03-20-2018, 05:46 AM
#19
Drifting
Quick question?! This thread takes the cake for the best "Quick Question" of the month.
Now as for 427 engine longevity trivia. The L71 427 engine in my 1967 vette came with a factory warranty for ...50k miles (or 5 years). Too bad mine didn't last that long.
Now as for 427 engine longevity trivia. The L71 427 engine in my 1967 vette came with a factory warranty for ...50k miles (or 5 years). Too bad mine didn't last that long.
03-20-2018, 01:40 PM
#20
There are lots of stock engines that when setup properly will achieve 100k on top of whatever you got it with used.
Just have to know what to do with it. You can use a long duration cam you just can't run alot of lift. A turbo adds economy and power in the most reliable manner. Water and methanol act as safety measures, causing even 93 octane to jump dramatically to around 115 octane under the right conditions. It is extremely possible to get OEM engines to live at those elevated power levels if every piece of the puzzle is in place.
For ex. here is a stock bottom end 6.0L in a truck going 9 seconds
https://www.youtube.com/watch?v=ckALwOQKE2M
Seriously if a regular truck can do that ...
Just have to know what to do with it. You can use a long duration cam you just can't run alot of lift. A turbo adds economy and power in the most reliable manner. Water and methanol act as safety measures, causing even 93 octane to jump dramatically to around 115 octane under the right conditions. It is extremely possible to get OEM engines to live at those elevated power levels if every piece of the puzzle is in place.
For ex. here is a stock bottom end 6.0L in a truck going 9 seconds
https://www.youtube.com/watch?v=ckALwOQKE2M
Seriously if a regular truck can do that ...
amazing, I’ll have khole grind me a smaller lift cam for nitrous i still would like a chop though I can’t get over my btr4. Like I said it’s my dd guys it’s maybe gonna see 10 track passes every month or two. On Nos