|11-22-2012 08:11 AM|
|454C10||a 240z is 2400lbs with fuel, I added another 200lbs with bigger stuff (engine, trans, exhaust, tires, radiator, diff, no2 system......) Plus I weigh in about 200lbs. So 2800lbs total car weight with driver. et is a little slow as compared to the trap speed due to slow shifts|
|11-20-2012 05:10 PM|
|11-20-2012 02:45 PM|
2,355 lbs (American) Datsun 240 Z. F birds close enough!!
|11-20-2012 12:25 PM|
love to see a vid of it hanging tires on the street, on dot tires
so a 240z is 2200lb's?
|11-20-2012 05:25 AM|
|11-20-2012 01:33 AM|
your 84 z will be happy without a little low end..
unless oh course you've reworked the whole car..
the facory set up.. a weak v6 with iroc wide tires can turn them over.lol
the car will be faster on the street with a softer lower end, that'll get you moving, roasting tires=fun but not fast
|11-19-2012 10:59 PM|
My dyno tests were in the the mid 80s! But they were really popular in the mid 70s and early 80s here! and are still produced! they were also used on a lot of Honda 750 racing motorcycles!
|11-19-2012 10:16 PM|
|vinniekq2||PJ, when were the tri Ys popular? I think Jere made the 4 into1s starting 1964? just before my time...lol.|
|11-19-2012 10:02 PM|
F birds "Y" pipe is interesting, reminds of the Tri Y headers I dyno'ed the Tri Ys! The increase in hp and torq was quite a bit more then street headers and fell just short of tuned competition headers till they entered higher rpms! over 5500rs! I guess that works on the same principle for scavenging!
I never ran shorty's either.
|11-19-2012 09:36 PM|
|vinniekq2||454 that sounds like a 10 second car|
|11-19-2012 09:30 PM|
|cobalt327||Personally I never run "shorty" headers- do what it takes to get it right.|
|11-19-2012 09:21 PM|
My 2800 car (with me in it) ran trapped at 120mph in the 1/4 mile with a 292H, 200cc dart iron eagles heads, 10.5:1 350, full length headers, rpm intake, and a 3310 750 holley. 3.90 gear and T5 manual trans
That is 370 hp at the tires
beat the hell out of that engine for 10 years. cam finally when flat when they changed the oil formulation
|11-19-2012 08:53 PM|
And judging by what I see, the XE268H ain't that bad, either. Especially w/the mild gears and stall. Comp's dyno sheet has it down for 342 HP @ 5000 RPM and 413 ft/lbs @ 3800 RPM using Dart S/R's and a 3310 Holley. Probably long tube headers too. Manifold Vacuum is 15.5" Hg @ 800 RPM & 17" Hg @ 1000 RPM w/ no load.
BTW, Comp also has a dyno sheet on the XE274H, it shows 369 HP @ 5900 RPM and 410 ft/lbs @ 3900 RPM using same parts as above. Manifold Vacuum: 11" Hg @ 800 RPM & 14" Hg @ 1000 RPM w/ no load. Get this one ground on a 108 LSA...
The rest of their cams w/dyno sheets are here.
|11-19-2012 08:50 PM|
|68NovaSS||I'm with Jester and 454, running an older Herbert 292H in the bucket, 427 BB tunnel ram, 3k stall. Lumpy, yes, but well mannered when tuned right. Being light (1800 #'s) gears aren't an issue and it pulls through 7k, not something I do often...|
|11-19-2012 08:23 PM|
292H comp cam with vortec heads
I checked a few out a few cams out on CamQuest6, comp cams simualator. First the 292H-2500-6500, .501/.501, 244/244 @ .050, 351hp@5500 & 377@4000 torq. XE284H-2300-6500, .507/.510, 240/246 @ .050, 359hp@5500 & 388 torq. 280H-2000-6000, .480/.480, 230/230 @.050, 351hp@5000 & 400@4000 torq. EX274H-1800-6000, .490/.490, 230/236 @ .050, 358hp@5500 & 405@ 4000 torq. XE268H-1600-5000, .477/.480, 224/230 @ .050, 354hp@5000 & 411@ 3500 torq. Notice that the smaller cams make more torque than the larger cams. With the IVC closing on all of these cams the DCR is 7.6-8.4 which is good for pump gas. These numbers are based on a dual plane and 750 cfm carb. Pocket porting the heads gains around 40HP. Single plane intake and large tube headers can gain 10-15hp each.
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