Corzette

Kevin, thanks for the info. Well Ill keep my 411s but I may go to the Nitto 275 60 15s vice the 50s. Question is will they fit? I have and inch and a half clearance now with the inner fender still there. I can cut it out as well to make more room if needed. This tire is 27.99. That would yield me a 121 MPH potential I believe. I currently dont have the power to exceed that so it would give me alot of growing room and great launches would it not? The stroker will go in later this year probably when it gets a little cooler however..... Terry

My cam is from 2200-5800 RPMS Peak ocurring at 6100 and torque at 4500. My rear is currently 354 but have 411s coming. My tranny is a 700R4. My stall is 2800 but only can go to about 1900 before the tires slip. My dual is rated to 6000 RPM however. Even with the 411s I wont exceed 6000 in third. I now run the traps at about 5200 or so at 111. My tires are right at 26 inches. Nitto 275 50 15s. I shift at 6000 RPMS. Terry

Well not good. I had the same MPH about as with the DUAL PLANE but lost 3/10ths due to the dog off the line comparitively. My average MPH gain from the 1/8th to the 1/4 was about 25MPH gain with the single plane vs 23 MPH gain with the dual plane. However, the loss of power from the line ate that right up. I was running 2.04s and 2.07s off the line....unsat! I do have the 3.54 rear still in though. Surely the 411s will make a difference. Im thinking about putting the dual plane back in. 12.4s are much more acceptable once you have already been there. The wierd thing is I never lost one single race. I beat uo an old school camaro 68 or 69 that was a little built. A bug with wheelie bars and pretty damn fast and several mustangs. I have the clips if someone wants to see them... I guess the 383 makes better use of the Victor Jr. At least in my case it was not a good swap. 411s may be a different story. I will know next month as I have a 411 R200 coming.....Comments anyone??? Terry

ZFAN, Ill be running again Friday to test the Victor Jr. I suspect a loss off the line with my 354 rear. However the good news is I bought a 411 rear R200 and will have it in for next month. I should be able to break 11s with good traction I hope. The final deal will be the 383 kit. So how is the tire thing coming Mike...I want to hear about those tens!!! Terry

I see another potential problem of which I experienced as well. First your fuel pressure is set too high in my opinion. Holleys like between 3 and 7 PSI but mine would over flow the bowls and cause the engine to run like crap then die. Afterwards it would take alot of time to get it started again. I run a 750DP and it likes about 5.5 to no more than 6 PSI. Back your pressure down....that could also be making your plugs wet. After backing your pressure down to 6 PSI, make sure to reset your idle mixture screws in front. Also, I would think that a good starting jetting for that 383 would be 72s or so in front....Ive been there in your situation...try it and see..... Corzette

Does this guy have an E Mail?

Maybe ZFAN is out there. I installed my Victor Jr. today and noticed two things...(1) I cant screw my datsun sending unit back in without cutting down the ridge on the back of the intake with a dremel. There is no room for an extension as the sending unit will hit the Distributor. I guess I need to trim the little ridge down to fit. Secondly, there is no vaccuum port for the brakes so I suppose I have to put the brake hose directly to rear of carb???? Then plug or filter the other valve cover? I see no other way less putting a T connector from the carb....anyone care to chime in. It looks good by the way. Terry

Kevin, thanks for the info! Well I already have the engine together minus the 400 crank and assembly. I have the 350 crank in there now with full Hydraulic roller retro fit. I am adding the balanced 383 stroker kit in a couple of months using my AFR 190s, Victor Jr. Single Plane, 1 5/8 block huggers and Proform 750 DP, with the XR282HR cam. Thanks again...Im excited about the build and looks like it will yield great DCR and SCR... 11s are definately coming soon to a raceway near me... I hate those damn Camaro SS cars. They talk so much trash. Theres one that runs a 11.7 here but I have something in store for those guys.... Terry

Kevin, the DCR calculations but I think it will be around 8.3 or so according the numbers I input 3.75 Stroke 5.7 ROD 4.040 BORE 4.060 GASKET BORE .040 GASKET THICKNESS 4CC Piston .015 DECK HEIGHT 282/288 CAM 110 Lobe Sep 106 Center Line Chambers 68CC Terry

ZFAN, my current setup yields 7.74 DCR with a .045 quench. Thats with 5cc flat tops. When I go to the 383 it yields 8.38 with the 5cc flat tops and 8.14 with 7cc. Do you know the cc size of those probes? Just curious.... My deck hieght is .005 since I had it decked. Terry

Unfortunately the track doesnt have time lights only slips at the end....I had a best 60 of 1.88 with this cam. Single plane goes on Thursday and cutouts on Tuesday...should be able to really hear it then... Terry

Oh yeah heres the link to my 12.47 at 112 run... Terry

Mike I do stall it but it will only reach about 1900 RPMS before the tires spin...I have a 2800 stall. I hope that a 3500 stall will yield me about a 2500 stall at the line... Terry

Heres the link thanks to Guys hosting... http://www.datsun-280zx-lt1.com/Movies/Corzette.MPG Wall Dragway San Angelo....Im in the left lane ofcoarse Terry

Mike are you on?

The Victor Jr was ordered...cant wait to put her on.....yet more test runs in the midst... any predictions on et gain/MPH? Gentlemen, place your bets... Terry

Hey guys, yeah Im gonna go with the Single Plane and 3500 stall before I slip in the 400 crank. The 275 Nittos calls for a minimum of an 8 inch rim. I have 4 or 5 inch back space and a 3/8th spacer. No probs with fit but is about 3/8s inch away from strut tube. It has never hit though. Be careful how your exhaust runs thru to the rear and dont get the pipes too close to the tires or you will hit them when making turns on uneven roads. I may have some pics on my site, I cant remember. Nittos are good on the street and last pretty long as long as you dont burn on em too much. I love em. But again mine are 275s so there is much traction, especially at the track. 11s are coming but I just want to track all the add ons with the 350 before I jump to the 383. I already have the roller retrofit rockers, lifters and cam. What happens when you retard the cam on the crank gear? More power? I think the 3500 stall should help in addition to the Single Plane. Ill have the Single Plane for sure by next months run. Then the 3500 stall. Afetr that in with the 400 crank and forged pistons..... Terry

V8 280, I dont have coil overs, just heavy duty springs and Illuminas. I run an 8 inch Weld DragLite in the rear with a 3/8th spacer. My tires are Nittos 275 50 15s. They hook great, no tire spin even with the torqy 270 cam before. Nittos are great tires and last alot longer than Drag Radials. You could get by with 235 or 245s without out a spacer I suspect or maybe a 1/4 inch spacer, I have a 4 inch back space so that depends on if you need a spacer or not too. You should also put the longer studs in the rear to accomodate the spacers. You dont have to take out the stub axle to put them in, just drill a hole in the dust plate big enough to pass the stud thru and use a lug to pull it thru, unless ofcoarse you have already done the disk upgrade to the rear, it makes it easier... A lesson learned from ZFAN, invest in some tires before going to the track. His car should run high tens as is but was limited last night because of street tires...i.e. other than Nittos, Drag radials, Micky T ETs etc... You are gonna have a blast! Just wait till all the people swarm your car at the track. Im becoming pretty popular out there! Now if I can just stay married...

Its 1.29 Meg...want me to EMail it to ya and you post? Its a good one and shows a decent launch... Terry

Mike I m glad your ok. yeah we all get a little frustrated with trying to go faster. Speaking of that it was a let down for me too. Well heres the deal...I got a lesson on HP vs Torque. My best time was 12.49 with the 270HR at 110.7. I ran a best of 12.47 at 112 tonight. My 60 foot times dropped from 1.85 to 1.95. I lost to a built Mustang 12.43 at 109 MPH to my 12.47 at 112. It was hard to lose that one because I was running him down. His launch was just too much for me to catch him..maybe two feet at the finish. Anyway it was fun. I may have been jetted too big on the primaries. 74/80. Ill try 72/80 next time. Its time to slip in the 400 crank and probes..... Heres the deal on the GTech....I ran a 12.47 at 112 and the GTech said 13.4 at 107!!!! Theres definately some discrepancy there. I would just use the GTEch for tuning purposes etc.... Lastly, I wonder if I go to the Single Plane....will I knock off a couple of tenths? I am going to order a 3500 stall as well. I know that I need to get the engine sped up quicker to take advantage of the bigger cam. Still all in all I am happy with the 12.4/5s at 111/112 for now. I want to document all the changes that are happening to pave the road for others as Mike has done for me and still doing. I keep getting girls wanting to ride the quarter with me...lol. I gave another a ride today and knocked of 2.5 tenths...she was skinnier!! Ill tell you one thing, this Z is a major attention getter and all the kids love it..... We had a cool night and no rain...perfect for racing. Hey I have a small clip of one of my races. Can anyone host it? Terry

ZFAN, I got the engine put back together with the XR282 vice the XR270. It is a most definate noticeable power increase. Much stronger pull after the launch and seems to keep pulling. According to the GTech with the 270 cam I averaged 4.7 secs 0-60s (which was way off---it was faster Im sure). Anyway I tuned this cam tonight and went 4.7 as well....thats great news for my quest of 11s.... I now shift at 6000RPMs vice 5320. Also I tried the 74/84s on the proform and she didnt like it on launch. I jetted down the back to 80s 74/80s and she really came alive. Im running a 4.5 Power Valve as well. Ill run it that way the first run and then either go 72/82 or 72/80 to make sure I am dialed in properly. It feels like 11s are in the picture...I predict 12 flat or 11.9s...cant wait.....let us know how your quest for 10s turns out..... Terry

Mike, I got the engine put back together with the 282. It is a most definate noticeable power increase. Much stronger pull after the launch and seems to keep pulling. According to the GTech with the 270 cam I averaged 4.7 secs 0-60s (which was way off---it was faster Im sure). Anyway I tuned this cam tonight and went 4.7 as well....thats great news for my quest of 11s.... I now shift at 6000RPMs vice 5320. Also I tried the 74/84s on the proform and she didnt like it on launch. I jetted down the back to 80s 74/80s and she really came alive. Im running a 4.5 Power Valve as well. Ill run it that way the first run and then either go 72/82 or 72/80 to make sure I am dialed in properly. It feels like 11s are in the picture...I predict 12 flat or 11.9s...cant wait.....let us know how your quest for 10s turns out..... Terry

Thanks guys for the input. I hope the weather cooperates as well. I want to run it before changing to a single plane intake. ZFAN can you tell me what part number on the Victor Jr. you have? Also did you have it match ported to the FelPro 1256? Just curious....thanks in advance... Terry

Is it wise to put sealer on the entire bottom side of the intake gaskets for proper seal or just around the water jackets? Going for 11s this Friday... By the way talking about extra weight and ETs. Iwent 12.49 at 110.7 with just me before and then with a passenger weighing about 160 I went 12.81 at 108!!!! It does make a difference...thats about 55 pounds per tenth...Im dropping my front fender and right seat on Friday to save around 60 pounds. After i change my 205s up front to the 4 inch drag tires and rims I will prob save another 20 or 25...The cam has been changed from the 270 to the 282 per AFRs suggestions...Wish me luck...11.99 or bust! Then the 400 crank goes in next with a single plane and forged probe flat top pistons.... Terry

Thanks Mike....yeah 110 consistant runs all night....so I wonder what the 282 will yield....I know it feels stronger by the seat of the pants....Talk to ya soon....Acoording to my GTech it was off by 3MPH as well. I remember testing the 282 and it showed 111 MPH as opposed to the 270 at 107. But the track said 110.7 on the 270 so I figure around 114 or so maybe for the 282?? Maybe 11s somewhere...I hope so. 383 in the coming months....lead the way Mike!...out....I need to get to Ennis sometime after my build and meet ya.....take care. Terry