NZ95Z28M6

Hi my name is Wayne, I live in new Zealand, I have a 95 LT1 Z28 6M, it has 45k on the clock, i am in the process of gathering and have pretty much all I need now to modernize the cars mechanicals. The engine will have static 11.5:1 dynamic 8.86:1, Pro-Gram full billet main bearing caps, Lunati Voodoo 3.75" stroke forged crank, Profesional Products 90030 balancer, Eagle 6'' H beam rods, SRP std flat top pistons with 2 valve reliefs, JE molly rings. Bailey LTCC to LS1 coil conversion, Taylor 409 Pro-Race spiro-wound plug wires with Taylor heat shields. Comp Cams: XFI 280 HR cam, push rods, 875-16 roller lifters, Rev kit, Pro-Magnum 1.6 ratio rocker arms. AFR 1039 Eliminator competition packaged heads, LT1 intake manifold will be ported and flowed to feed the heads/cam. Hooker Super Competition long tube headers. Spec stage 3+ clutch and Alu flywheel. Moser 9" with 35 spline wavetrac, 3.70 ratio, Frys 2 watts linkage, Lower relocation control brackets. UMI top and bottom A-Arms fully adjustable with roto joints/rod ends, Torque arm relocation cross member with drive shaft loop, Torque arm, bolt in sub frame connectors, Adjustable rear control arms with roto/roto joints, Strano springs, koni Shocks, UMI 35mm front and 22mm rear sway bars. I thank the contributors on this site it provided me with information what worked, what didn't. I hope to be able to contribute to members in the future on what knowledge I have good or bad. I will be modernizing my car in 2 stages, I will build the engine first and get that out the way then i will perform the rest as in NZ if certain mods are done the car needs to be inspected by and engineer and have a report done other wise it wont get a warrant of fitness, no warrant no registration. Oh I forgot to add the brake up grade is to DBA 2 piece rotors for Z51 13.4" on the front with Z51 Calipers, on the rear DBA 13" Z51 rotors with Z51 Calipers

Tuzman

iTrader: (3)

Nice look. Welcome.

kevin99hoss

iTrader: (4)

welcome, do you have any pics of the car outside in nature?

NZ95Z28M6

@Tuzman: thank you for your words of welcome to LS 1Tech.

NZ95Z28M6

@Kevin99hoss: thank you also for your welcome, I dont have any pictures of my own yet but will take some, the pic's in my post are of the car at the car dealer in Christchurch NZ where I bought it from, these were attched to the advertisement.

Tuzman

iTrader: (3)

Nature in NZ must be like in the movie Brotherhood of the Ring. Lol

kpeterson

You should have a good runner there. IIRC one of the magazines did a hop up with that cam in a carbureted 383 and made almost 400 RWHP.

NZ95Z28M6

@Tuzman:The brotherhood of the ring is quite a popular movie it is a good representation of nature in NZ. :-)

NZ95Z28M6

@kpeterson:I have read a few articles since I had mapped out what I was trying to achieve with my motor build, what parts to use to get my goal, I am looking for lot of torque and it needs some horse power to get torque, being a street car it wouldn't see a lot of full throttle top gear driving but see more of 2000rpm to 6000+ accelleration blimps. I hope I am not dissappointed.

kpeterson

I haven’t worked with LT1 induction but based on carbureted gen 1 strokers I built, I’d expect the usable torque of your combination to be good. I’ve done a 377, 383 and 406, all with about 12 to 14 degrees more duration than your set up. The 406 has a single plane intake and a 3” exhaust. It’s a bit weak below 2200 RPM in overdrive but the other two were very responsive and happy in OD. Part of the reason may be my compression though. My 406 is about 11.5 and in OD to avoid knock I had to keep the advance a little slower than I’d like. It is not a computerized set up so I’m limited on tuning parameters. The other two engines are 9.7 and 10.7. I was able to bring the timing in a lot quicker on those two.

NZ95Z28M6

@kpeterson: interesting info, were you using pump gas on your 406, what octane rating. In NZ we have the choice of 3, 91.95and 98. I also own a Honda S2000 which has a CR of 11.0-1, I normally use 95 but I did trial it on 98, I used the same section of road with corners, the only difference through the seat of my pants was coming out of a slower corner under load the car pulled through better, I guess more throttle responsive, on the road under varying conditions there was no noticeable improvement, the car didn’t perform any better. In the LT1 from what I have read they seems to like about 35 degree advance. I anguished over the larger XFI 292 cam but threw caution to the wind going with the 280, same with my cylinder heads, I was almost certain I was going to go with 58cc chamber which would have yielded 11.8-1 compression but went with 60cc chamber and 11.5-1, I will see how I like the 280 cam if not I will consider the 292 or will contact Comp Cams and maybe look at a custom grind, perhaps someone on LS1tech has tried this and gon to a custom grind in similar set that works better. I have thought about running a carb set as I have a 750 and 650 DP square flange carbs, would need to buy a good manifold the would work with my set up, with fuel injection you do have better fuel control, so I see what happens. How did you find the 3'' exhaust did it work well on torque, was it a dual system.

kpeterson

Unfortunately there are multiple variables besides the compression that make it hard to determine how much is from each one contributing to the lost low end of the 406. All are in ’67-69 Camaros with cowl induction but not sealed to the hood, all TKO 600, 377 has 3.42 gears the 383 and 406 have 4.10s. 377 has mildly ported Brodix IK200, the other two have AFR 195. 377 is 10.7:1, 383 is 9.7:1 and the 406 is 11.5:1. 377 1 5/8 primary with 2 ½ plus x pipe, 383 2 ½ no cross over, 406 1 7/8 with 3” with x pipe, all are true duals. The two smaller engines have RPM Air Gaps and the 406 has a Vic Jr with a 1” spacer all are 850 mech secondary carbs. The 406 has an electronic advance MSD distributor and I’ve played with the both the mec and vac advance to make it happy in OD at lower RPM. The advance rates that make it very happy in gears 1-4 caused knock in 5th below about 2000 RPM if you gave it more than just the slighted amount of additional throttle. Advance curves that let you go down to about 1700 in OD and still add gentle throttle noticeably reduced the low RPM feel in the lower gears. The other two cars could lug down below 1500 and pull out from there with reasonably induced throttle.

The 377 and 383 are happy on 91 octane the 406 has always has 93 (best I can get here).

Over all the 406 is not bad but after getting used to the other two you know you’re down on low end torque. I thought that with the extra cubes and compression the 406 would be pretty close to the others at low RPM but I haven’t be able to get there yet. I still have more tuning to do but as the temperatures go up here I might not really be able to get it much better. I believe the single plane is probably the biggest contributor to the reduced bottom end with the timing curve next and then the larger exhaust. With your better gas reverse cooling and FI you might be good with your combination. When do you hit the road?

NZ95Z28M6

@kpetersen: Most of my parts are still in the USA at the shipping company in Compton CA, I'm waiting for my cylinder heads to be made I was told by CNC Motorsports about 4 weeks for those, I have still got 6 or so items to get then I will get all the parts shipped via sea freight, I think last time it took 20 days to arrive in NZ. I dont think I will be getting much done till later in the year as I am going over seas on Holiday in August and will be sometime on October when I get back. My main focus is getting parts while the exchange rate is good, then it will be roll up the sleeves and get it done.

kpeterson

Shipping by sea, I get impatient with three days from Summit, LOL. Do you also have to deal with customs holding your parts?

I guess the tradeoff is a two month vacation. Here a two month vacation probably means you got laid off.

It’s going to be a fun car when you get all the pieces.

NZ95Z28M6

@kpeterson: Unfortunately Customs will not release the parts till all duties are paid, I think from memory car parts have a 5% duty but I cant remember if they will charge GST (goods service tax) on top of that which is 15% so I am in for some pain from them, I will even be paying these cost on the frieght, any state taxes that I have paid in the USA, I have approx $20K NZ$ worth of parts to come to NZ. I am a shift worker so all employees in NZ get a minimum of 4 week (20 working days) annual leave plus I get another 5 working days shift holiday making it 25 days and because I sometime only work 3 days in a week I can get a lot of weeks using the leave plus I still have plenty i have carried over from previous allocations. Yes I am hoping the camaro will be quite lively if it goes around corners like my Honda S2000 and has the same power to weight ratio I will be smiling big time LOL, will be able to rark up some of those HSV Holden Commodore's and Ford Falcons SPV's, let them know who's boss hahahahaha.

02DroptopZ

iTrader: (3)

Very nice car, sounds like a solid build! How rare are these cars down there?

MikeFSKSpeed

iTrader: (37)

Looks Good!

If you ever need a deal on parts, we ship worldwide everyday. We ship quite a few packages a day via USPS/UPS/DHL to Australia and New Zealand and offer great prices.

Good luck with the car and message me with any needs!

Mike

NZ95Z28M6

@02DroptopZ: Camaro's arn't that rear, more of a novelty seeing left hand drive cars driving down the road,at the moment there are quite a few different years for sale from 69-2013, we have a couple of 2012 ZL1's that someone has imported. my Camaro came out of Japan, I have only seen 2 other 93-96 manual camaro's for sale so I guess you could say factory built manual cars are rare. If you wanted to have a look you can do a search, type trademe.co.nz into your web browser,click on cars. bikes & boats, used cars, click on used cars for sale for sale, if Chevrolet is not loaded there will be an option to load more, click on that, and see some of the american built cars for sale, this is just a web site where people try to sell there wares.

NZ95Z28M6

@MikeFSKSpeed: thanks for that info I will add you to my list of suppliers.

NZ95Z28M6