427 lsx
02-21-2008, 06:54 PM
#23
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His old 427 did 524 on a Dynojet and almost 560 on a Dynapack. Right now he is at 0rwhp... 
We are having almost the exact same engine built though, LME LSX 454 with TEA TFS 245 heads and FAST 90/90... 11.7:1 CR 4.187 on a 4.125 stroke both built for nitrous.
The only differences will be his 1 7/8 Kooks vs our 2" ARH and his T56 versus our built to the hilt 4L65E with 4k stall... oops
We are having almost the exact same engine built though, LME LSX 454 with TEA TFS 245 heads and FAST 90/90... 11.7:1 CR 4.187 on a 4.125 stroke both built for nitrous.
The only differences will be his 1 7/8 Kooks vs our 2" ARH and his T56 versus our built to the hilt 4L65E with 4k stall... oops
02-22-2008, 10:43 AM
#24
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His old 427 did 524 on a Dynojet and almost 560 on a Dynapack. Right now he is at 0rwhp...
We are having almost the exact same engine built though, LME LSX 454 with TEA TFS 245 heads and FAST 90/90... 11.7:1 CR 4.187 on a 4.125 stroke both built for nitrous.
The only differences will be his 1 7/8 Kooks vs our 2" ARH and his T56 versus our built to the hilt 4L65E with 4k stall... oops
We are having almost the exact same engine built though, LME LSX 454 with TEA TFS 245 heads and FAST 90/90... 11.7:1 CR 4.187 on a 4.125 stroke both built for nitrous.
The only differences will be his 1 7/8 Kooks vs our 2" ARH and his T56 versus our built to the hilt 4L65E with 4k stall... oops
And maybe your running 11.7:1, but I told Bryan to bump me up to 12.0:1. Free power!
Im gonna make more power! Neener Neener!!!
We're looking for 620 - 640 RW.. to answer the OPs question.
EDIT:
Jack, if we can break the 640rw mark NA, which I can possibly see with the 245's and the cam were using, I think on the juice we just MIGHT barely scratch that Magical 1K RWHP # with the right nitrous setup.
Theres a guy I met up north a little with a 472ci warhawk that did 660rw and 1010 on a 300 shot
Last edited by jermzz; 02-22-2008 at 04:34 PM. Reason: more bullshit.
02-22-2008, 04:48 PM
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I dont know where 03BUSA had his shortblock built. But both Azrael and I went with LME Late Model Engineering http://www.latemodelengines.com
Bryan really knows his ****. Talked with him for a good amount of time before I ordered.
For me it was between Texas Speed and LME. I got discouraged with Texas Speed because they were pushing hard toward a 439ci instead of a 454ci using the wrist pin location vs stroke defense, basically the same reason that you wouldn't spray a L92 427.
After talking to Bryan at LME, He assured me he already had LSX 454's on the street running large nitrous shots without problems and that the pistons that they're running in these 454 motors had the ring pack and pin far enough down for there not to be a problem up to a 300 shot.
Not to mention their quotes were about $1200 apart in favor of LME so...
Bryan really knows his ****. Talked with him for a good amount of time before I ordered.
For me it was between Texas Speed and LME. I got discouraged with Texas Speed because they were pushing hard toward a 439ci instead of a 454ci using the wrist pin location vs stroke defense, basically the same reason that you wouldn't spray a L92 427.
After talking to Bryan at LME, He assured me he already had LSX 454's on the street running large nitrous shots without problems and that the pistons that they're running in these 454 motors had the ring pack and pin far enough down for there not to be a problem up to a 300 shot.
Not to mention their quotes were about $1200 apart in favor of LME so...
02-22-2008, 05:39 PM
#30
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hey buddy! I did 526 rwhp! and 563 on the dyna!! Get it right!
And maybe your running 11.7:1, but I told Bryan to bump me up to 12.0:1. Free power!
Im gonna make more power! Neener Neener!!!
We're looking for 620 - 640 RW.. to answer the OPs question.
EDIT:
Jack, if we can break the 640rw mark NA, which I can possibly see with the 245's and the cam were using, I think on the juice we just MIGHT barely scratch that Magical 1K RWHP # with the right nitrous setup.
Theres a guy I met up north a little with a 472ci warhawk that did 660rw and 1010 on a 300 shot
And maybe your running 11.7:1, but I told Bryan to bump me up to 12.0:1. Free power!
Im gonna make more power! Neener Neener!!!
We're looking for 620 - 640 RW.. to answer the OPs question.
EDIT:
Jack, if we can break the 640rw mark NA, which I can possibly see with the 245's and the cam were using, I think on the juice we just MIGHT barely scratch that Magical 1K RWHP # with the right nitrous setup.
Theres a guy I met up north a little with a 472ci warhawk that did 660rw and 1010 on a 300 shot
02-22-2008, 05:41 PM
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TSP is using a different bore and stroke on their 454 setup. Their worry was that the a high wrist pin placement is necessary for adequate piston stability at bottom-dead-center. Due to the high wrist pin placement, a thinner .043"/.043"/3mm ring pack is required.
02-22-2008, 05:46 PM
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02-22-2008, 05:51 PM
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Is TSP using a 4.2 x 4.1? hmm. Interesting. I never got an explanation from TSP as to why they wouldn't recommend the Juice. I Dont know a whole lot about piston ring pack and pin location in relation to making it a good nitrous piston so I just take Bryan's word that it's OK.
Not to knock TSP, I just feel better with Bryan and LME doing the work!
02-22-2008, 05:55 PM
#34
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Yeah TSP's combo is a 4.200 bore with a 4.1 stroke, the sort of ironic thing is I would think the 4.100 crank would be better for a power adder and the worry would be the material left (bore spacing) on the block and on the head gaskets... They explained to us that it was due to the wrist pin placement though.
Not to knock TSP, I just feel better with Bryan and LME doing the work!
Not to knock TSP, I just feel better with Bryan and LME doing the work!
so you saying TSP uses the .043 .043 3mm ring pack? Cause my sheet from LME uses the same size.
02-22-2008, 06:02 PM
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Basically, although I talked at length with Bryan about the rings and the type they are using are a lot more aggressive than would have been used in the other build. There was no problem with them for use on the spray, and I think TSP is also just using a wider margin of safety.
