Stock rotating assembly safe for cam only? My son and I's 95 Z28 build thread
#1
Stock rotating assembly safe for cam only? My son and I's 95 Z28 build thread
Since colder weather has became more prominent in my parts the problems of my car have became worse so, I've gotten it disassembled for the winter. Some buddies and me dropped the motor out the bottom last night after the waterpump died and soaked the 162k opti... As bad as it is, it came at a pretty adequate time considering the months where snow is very regular where I live are only a week or two away. So I figured it would be a fun project for me and my 16 year old son who doesn't have a car yet, he gets his license in May of 2016. I'm planning to have me and him work on it make it cool and then surprise him by giving it to him when he gets his license. The motor is still fine, I'm strongly hoping of being able to get away with just a simple wash, hone, line hone, new cam bearings, new freeze plugs, maybe 10/10 the crank if needed. I do plan on putting a small cam in, I think I've settled on the AI 226/234 110LSA cam. My only questions are how reliable would the motor be with this cam, re using the stock rotating assembly? I plan on having the rods shotpeened/resized and upgrading to ARP rod bolts. I'm going to use midlength headers since I have already lowered the car and I don't wanna deal with the scraping and headers causing false knock by hitting the k member, the O2s being extended etc... Next question To support the AI cam can anyone recommend some quality parts for a budget? Of Course since the water pump died along with the opti I'll be replacing those items with a Delco Pump and MSD opti. Any tips and pointers here? I only have 3500-4000 dollars for this. That's why I'm planning on using the stock rotating assembly and going with a smaller cam so I don't have to buy some hardcore valve train components...
For those that don't know the car is a 95 Z28 LT1 A4 with 3.23 gear rear end.
For those that don't know the car is a 95 Z28 LT1 A4 with 3.23 gear rear end.
Last edited by Thecatfishz28; 11-10-2015 at 09:34 PM.
#2
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Given that your son is only 16, I would probably drop the cam by 10*, It will still be a fun street car with some good torque, and you can still use the stock stall tho a little larger will give a better off the line kick. If all of the rotating assembly is good then I see no need to upgrade for a build like this less the ARP as mentioned or even a set of 3.73's out back. With your budget you will need every penny for odds and ends, Opti, coil, Water pump, possibly plug wires, plugs, gaskets, oil ect.
#3
Given that your son is only 16, I would probably drop the cam by 10*, It will still be a fun street car with some good torque, and you can still use the stock stall tho a little larger will give a better off the line kick. If all of the rotating assembly is good then I see no need to upgrade for a build like this less the ARP as mentioned or even a set of 3.73's out back. With your budget you will need every penny for odds and ends, Opti, coil, Water pump, possibly plug wires, plugs, gaskets, oil ect.
Last edited by Thecatfishz28; 11-09-2015 at 03:10 PM.
#4
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Bigger wires will be a pain in stick looms. If your tossing a cam in, you need headers, y pipe, some sort of Cai or lid swap, good 8.5mm wires (summit is what I run) good valve train. For the money comp 918 springs are hard to beat, and your buildingbit. So they heads can be made to fit them properly height wise. Nsa tockers, guideplates, LSx lifters, new pushrods. Gears or a stall would be a good idea too. Motor mounts maybe.
I just did a cc503 on my lt1, super happy with it. You can check out my thread about it titled (starting to bring the Z back to life) idle clip included.
I just did a cc503 on my lt1, super happy with it. You can check out my thread about it titled (starting to bring the Z back to life) idle clip included.
#5
Bigger wires will be a pain in stick looms. If your tossing a cam in, you need headers, y pipe, some sort of Cai or lid swap, good 8.5mm wires (summit is what I run) good valve train. For the money comp 918 springs are hard to beat, and your buildingbit. So they heads can be made to fit them properly height wise. Nsa tockers, guideplates, LSx lifters, new pushrods. Gears or a stall would be a good idea too. Motor mounts maybe.
I just did a cc503 on my lt1, super happy with it. You can check out my thread about it titled (starting to bring the Z back to life) idle clip included.
I just did a cc503 on my lt1, super happy with it. You can check out my thread about it titled (starting to bring the Z back to life) idle clip included.
*edit;as far as headers, I really want to do mids, the car will be lowered after the motor is back in, I really don't wanna deal with the scrapping and tuning issues with Longtubes hitting the k-member etc causing false knock.
For air induction I think I'm going to go with a Moroso.
#6
TECH Veteran
I wouldn't consider that cam really small.
Bigger wires just have more insulation for the most part, make installation difficult and don't contribute to performance, IMHO. Lots of people have stock AC-Delco wires on their performance engines.
A stock rotating assy can handle it.
Bigger wires just have more insulation for the most part, make installation difficult and don't contribute to performance, IMHO. Lots of people have stock AC-Delco wires on their performance engines.
A stock rotating assy can handle it.
#7
I wouldn't consider that cam really small.
Bigger wires just have more insulation for the most part, make installation difficult and don't contribute to performance, IMHO. Lots of people have stock AC-Delco wires on their performance engines.
A stock rotating assy can handle it.
Bigger wires just have more insulation for the most part, make installation difficult and don't contribute to performance, IMHO. Lots of people have stock AC-Delco wires on their performance engines.
A stock rotating assy can handle it.
Till it quit running... Are stock rotating assembly's really that strong?? I guess I spent a lot of extra money i didn't have too on my build... glad to know the stock rotating assembly can handle it's own.. I might freshen up my old LT1 knowing that. From what I've read the stock internals are made by Mahle?? That's interesting if true, OP: I am 17 and bought my Z28 when I was 16, I was your typical 16 year old burnouts, drifting... Hope your son has a job or he's gonna go through some tires pretty quick...
Last edited by VoyagerCamaro; 11-09-2015 at 04:35 PM.
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#8
Man I just think back to high school when I had my Z... Pry a good thing it was headers only because man did I drive it hard.
IMO no reason to screw with mid length headers. You won't have more issues than the mid lengths would give you.
This will definitely be a badass car sitting at school for him though! Very cool
IMO no reason to screw with mid length headers. You won't have more issues than the mid lengths would give you.
This will definitely be a badass car sitting at school for him though! Very cool
#10
Man I just think back to high school when I had my Z... Pry a good thing it was headers only because man did I drive it hard.
IMO no reason to screw with mid length headers. You won't have more issues than the mid lengths would give you.
This will definitely be a badass car sitting at school for him though! Very cool
IMO no reason to screw with mid length headers. You won't have more issues than the mid lengths would give you.
This will definitely be a badass car sitting at school for him though! Very cool
#11
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Longtubes are well worth it, even on a lowered car it's not that bad. You just can't whip in and out or places, and need to be careful. I drove a slamed dsm for a bit, no real problems. Plug wires I only suggest thicker ones to deal with the heat of longtubes. 6 sets of wires later, even with the heaDer socks on them. AutoZone junk with a lifetime warranty.
#13
That's my main concern, he's my son and I love him but I don't think he's got enough sense yet being 16 and trying to goose it to pull out in front of someone haha.. Not like I didn't do it at his age either. Besides, I'm not to worried about the extra HP that Longtubes will provide me with.
#15
After I get the motor apart and have my machine shop check the condition of the block to hopefully get the cylinder walls honed if there aren't any scores/scratches on the cylinder walls, can anyone recommend a good set of piston rings??
#18
One of the key factors is I am not gonna add the supporting mods to make it capable of running 11s, I'm keeping the stock converter and gears just for the street-ability. With his job now I doubt he will be able to save enough money to buy a high stall converter and better gears, and if he does I know he won't be able to install them by hisself! but to answer your question; Yes & no, honestly I don't feel comfortable letting him drive at all even if he were in a Prius , I do feel more comfortable that it's a 4L60e rather than a T56, he has driven the car before it bit the dust and proved he could handle the power. Moehorsepower recommended to knock the cam down 10*. So if the cam is smaller, without a better set of rear end gears and a high stall converter, and I have still chosen to stay with mids. I wouldn't think the power gains are gonna be to much for him. But like I said, being a father as long as he's on the road I'm going to worry. But I know he's into cars and would really enjoy this, in reality the only reason I'm even entertaining the thought of camning the motor is for sound. If it were my car it'd be a different story! But I know it will be badass for him to roll up to school with his Z28 muscle car sitting real low, with the cam just loping away, maybe even take the t tops off...
#19
TECH Veteran
If you don't try to tame that cam as Moe suggested (or get a smaller one) it is gonna suck for daily use, IMHO. With the lope and stock converter is it not going to want to stay still at a stop light. Gas mileage will also suck. I'll also agree with the above posts that a stock engine is more than a 16 year old needs, but you seem to have made up your mind. No matter how wise a kid seems, they are still a kid and their judgement has not matured at that age.
#20
TECH Fanatic
To me it would be foolish to throw a cam in and not the supporting mods, making the car drive like $hit. You are going at it backwards, just build it stock with some bolt-on's like converter and gears. Maybe the springs, rockers and if you want sound throw in a hotcam. That should be more than sufficient.