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355 HP For LH Guestimate?

Started by _rorym_ , Jan 07 2008 11:27 PM

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137 replies to this topic

#26 _rorym_

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Posted 11 January 2008 - 02:54 PM

Its an Accel Billet...he is doing that on his bench today.
R

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#27 _The Baron_

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Posted 11 January 2008 - 03:14 PM

Engine or chassis dyno?

I would love to stretch it on a chassis dyno for a tune up but I always would worry about the Aussie hand grenade (m21). 10 bolt should be OK.

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#28 _rorym_

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Posted 11 January 2008 - 03:37 PM

Engine....flywheel readings..
R

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#29 GML-31

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Posted 11 January 2008 - 03:49 PM

425 430 442 boom........

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#30 _rorym_

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Posted 11 January 2008 - 05:14 PM

No way Hos'e! :gun:

R

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#31 _tyre fryer_

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Posted 11 January 2008 - 05:48 PM

389Hp

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#32 _82911_

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Posted 11 January 2008 - 06:16 PM

With a better set of pipes I rekon you will crack 480Hp..... probably be a bit peaky though....
With the pipes you are using around 450-460 hp.. and it will probably fall over at around 6800rpm.
Dont suppose you know if the cam is straight up and down?
With a bit of retard on it you might get it to make power past 7000rpm.
Lets see how my crystal ball looks...... :tease:

Cheers Greg..

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#33 _rorym_

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Posted 11 January 2008 - 06:42 PM

Pretty good. I am expecting a brick wall at 6800/6900...thats fine with me...but a mountain of torque in the guts is what I want.

R

Edited by rorym, 11 January 2008 - 06:42 PM.

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#34 _rorym_

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Posted 11 January 2008 - 06:43 PM

389Hp

You can go to the shed right now... :furious:

...I will be out there soon..
R

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#35 _high_rpm_

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Posted 11 January 2008 - 07:11 PM

i know of a very simular setup making 490fwhp

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#36 _timbotorrie_

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Posted 11 January 2008 - 07:59 PM

i would say about 478HP :spoton:

a single plane and good pipes would help it out nicely

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#37 _rocket_

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Posted 11 January 2008 - 08:01 PM

Rory, if that doesnt do 500, at least, somethings wrong.

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#38 _rorym_

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Posted 11 January 2008 - 08:13 PM

Rod,
Its a pretty genuine dyno...the dual plane and Tri ys will hold it back a bit..Ray said today he chose not to hit the exhaust ports too hard as that will move more power up into the top end and he knows what my agenda was...maybe 500 ft/lbs in the middle isnt out of the question considering the combo....if thats the case..I will be at the next corner ..still thinking about the last one....that "bury your spine in the seat" type of torque. :clap:

R

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#39 _rocket_

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Posted 11 January 2008 - 08:19 PM

Mines doing around 440, with standard stroke early heads ported, solid reed cam, performer , antique L34 extactors and shitty old 48 IDF s, you have all the good gear, so its got to be impressive, have to be at least 90 more than mine.

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#40 _ezy_09s_

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Posted 11 January 2008 - 09:31 PM

Sorry Rocket,not to be a smart ass but the only way that would make 500+hp is on a happy dyno..you just wont do it with dual plane and off the shelf tri y pipes.
I think though with good 4 into 1 pipes 1 7/8" or stepped 1 7/8 to 2" primary and a good single plane like a harrop or similar would be the best bet for outright power & still strong torque.
Should be nice toque curve but also i think it will fall flat before 6900 for peak power.
My 380 ci chev with brodix dash 11 ported as far as possible with brodix single plane ,14.5 comp,alcohol 1050 dominator,268 @ 50 duration roller cam,1 7/8 pipes fell over at 7000..but did make 644 hp/560 ft/lbs.Even playing with cam timing on the jesel didnt see f*ck all difference.
You shold have a nice combo though but i still stick with my previous guesstimation of 470 hp at best..i just think the manifold & pipes will hold it back a little.
cheers Ben

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#41 _rorym_

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Posted 11 January 2008 - 10:13 PM

the only way that would make 500+hp is on a happy dyno..

The dyno used is also used for several top name Pro Stock drag cars...I think it is very fair in readings I have seen.. We estimate the mid 400s which I feel is a very realistic number...as I said..the real important number will be the torque band and at what revs.
R

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#42 _tyre fryer_

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Posted 11 January 2008 - 11:12 PM

389Hp
You can go to the shed right now... ...I will be out there soon..
R

sorry i meant 489HP

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#43 _tyre fryer_

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Posted 11 January 2008 - 11:20 PM

i know of a very simular setup making 490fwhp

thats one mad magna!

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#44 _rorym_

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Posted 11 January 2008 - 11:22 PM

Think he means flywheel...not front wheel...??
R

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#45 _Monkey_

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Posted 11 January 2008 - 11:51 PM

i know of a very simular setup making 490fwhp
thats one mad magna!

pmsl

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#46 rodomo

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Posted 12 January 2008 - 12:09 AM

How many jelly beans are in this jar?
I reckon 462

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#47 _rocket_

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Posted 12 January 2008 - 05:51 AM

Yeh your right ezy, I didnt read everything totally, I just looked at torque power, then straight to the bottom, still reakon 500 or real close. L34 pipes would have to be fairly restrictive, so it should breath miles better than mine. Talking of honest dynos, is CNJ Motorsport at Slacks Ck QLD an honest one ? Thats where mine was done, it was about 352 rwhp at 5500, dizzy not recurved yet and jetting not touched, its going back before easter, bathurst is a long straight to run lean, see how it goes !