LE heads go 10s N/A Drops 5/10th w/TH400
06-05-2008, 11:52 AM
#24
Last time out (two years ago) she was going 11.4s-11.5s in the same weather and was tipping the scales at 3,650.
SO about the same weather, only lost 150Lbs and put in a TH400. The "informed" people here told me I would be slowing down 2-4 tenths and my combo was lack luster at best. Crappy LE heads and no name engine build.
Yeah they can kiss my white ***!
06-05-2008, 12:13 PM
#29
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SO about the same weather, only lost 150Lbs and put in a TH400. The "informed" people here told me I would be slowing down 2-4 tenths and my combo was lack luster at best. Crappy LE heads and no name engine build
I wanna know what I should be running too setupwise....
06-05-2008, 12:34 PM
#32
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RV grind 3/4 race cam, HIGH Stall 1600 Race Converter, Ported and Polished 48mm-tbody with coolant not by-passed, Twin Disk, ORY to Magnaflow Cats, 1000 Gallons per hour fuel pump, 24Lbs "Flow Batched" racing performance injectors and LS1 CAI.
06-05-2008, 12:35 PM
#33
Lol. Thanks for posting that great inference, it changed my day.
I just find it quaint how a car that is as "race car" as mine becomes grandma's grocery getter for the purposes of this post. I did claim that his car would slow down with the TH400 and I asked him to man up and post the results good or bad when he had them. I was wrong and his car did go faster/quicker. It wasn't an apples to apples comparison with the weight reduction, suspension changes, tire change and transbrake, but I'm happy for him.
It is interesting to see the rosey glow cast upon these times. The title of the thread says "LE heads go" which belittles the heaps of money and mods on this car.
I just find it quaint how a car that is as "race car" as mine becomes grandma's grocery getter for the purposes of this post. I did claim that his car would slow down with the TH400 and I asked him to man up and post the results good or bad when he had them. I was wrong and his car did go faster/quicker. It wasn't an apples to apples comparison with the weight reduction, suspension changes, tire change and transbrake, but I'm happy for him.
It is interesting to see the rosey glow cast upon these times. The title of the thread says "LE heads go" which belittles the heaps of money and mods on this car.
06-05-2008, 12:46 PM
#34
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I did claim that his car would slow down with the TH400 and I asked him to man up and post the results good or bad when he had them. I was wrong and his car did go faster/quicker.
Weight notwithstanding cause MY setup was with ZERO other changes. no weight loss, no other mods, nothing... Just T56 to Th400..... T56 11.9@119, TH400 11.6@117..... so please explain this theory to me......
06-05-2008, 12:53 PM
#35
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https://ls1tech.com/forums/lt1-lt4-modifications/919868-lt1-vs-10-bolt-rear-axle.html
I haven't got to drive it since the first weekend in May. But hey at least it didn't break until after the shootout
06-05-2008, 12:59 PM
#37
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Congrats on making the whole car faster. It's funny that some people think the transmission counts for almost nothing (so I have been told about my car 
). Welcome to the 10 sec N/A club! Do you have a break down of your previous best pass. It would be cool to see where it gained the most.
). Welcome to the 10 sec N/A club! Do you have a break down of your previous best pass. It would be cool to see where it gained the most.
06-05-2008, 01:03 PM
#38
I usually stay out of these arguments but I had to ask this question. Why in gods name would you think that a car would slow down with a TH400???? Ellis didn't put a Th400 in from a Ford Econoline van.... It's obviously a race built RMVB TH400.... I lost 2 MPH and 50 RWHP from my swap from a T56 to a TH400 but went close to 4 tenths faster at the track... Not flaming you tireburnin at all but I wanted to hear the theory behind his car slowing down and where you would come up with that..
Weight notwithstanding cause MY setup was with ZERO other changes. no weight loss, no other mods, nothing... Just T56 to Th400..... T56 11.9@119, TH400 11.6@117..... so please explain this theory to me......
Weight notwithstanding cause MY setup was with ZERO other changes. no weight loss, no other mods, nothing... Just T56 to Th400..... T56 11.9@119, TH400 11.6@117..... so please explain this theory to me......
His 150lb weight reduction was a easily a 1.5 tenths and 1.5 mph alone. His change to brand new radials could have been a mph alone. His 60ft dropped a thenth and would positively affect mph too. Transbrake/two step, who knows?
I believe a simple 4l60 to th400 swap (no 10 other changes) would have resulted in a slow down in MPH and likely ET. There is little driver error to correct for like in your t56 to th400 swap. The other changes likely had more effect on his times than the th400 alone. Madman did more for this cars ET than LE or a th400 did.
06-05-2008, 01:15 PM
#39
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He came from a built 4l60 with a big stall. They have a big first gear (numericlly) and a locking converter. He moved to a th400 with a similar stall and non locking converter. Lower first gear more parasitic loss on the big end.
His 150lb weight reduction was a easily a 1.5 tenths and 1.5 mph alone. His change to brand new radials could have been a mph alone. His 60ft dropped a thenth and would positively affect mph too. Transbrake/two step, who knows?
I believe a simple 4l60 to th400 swap (no 10 other changes) would have resulted in a slow down in MPH and likely ET. There is little driver error to correct for like in your t56 to th400 swap. The other changes likely had more effect on his times than the th400 alone. Madman did more for this cars ET than LE or a th400 did
His 150lb weight reduction was a easily a 1.5 tenths and 1.5 mph alone. His change to brand new radials could have been a mph alone. His 60ft dropped a thenth and would positively affect mph too. Transbrake/two step, who knows?
I believe a simple 4l60 to th400 swap (no 10 other changes) would have resulted in a slow down in MPH and likely ET. There is little driver error to correct for like in your t56 to th400 swap. The other changes likely had more effect on his times than the th400 alone. Madman did more for this cars ET than LE or a th400 did
06-05-2008, 01:22 PM
#40
Okay I can see and understand your logic..... I'd have to ask Ellis about his previous tranny setup. was he shifting his old 4L60? most 4L60's I see are not RMVB setups and most put it in D and let the tranny shift itself.... loss of time right there. minimal but a loss. TH400's are neck crackers when you shift. I haven't ridden in a 4l60 car that shifts as hard as my ATI TH400 car does... Ultimately it really doesn't matter what comes from where and how much cuz there is no way to prove it.... The combo of his parts = a certain ET..... and his car picked up close to 1/2 second..... it wasn't all in the 60' (which was only 1 tenth better and equates to roughly 2 tenths at the big end) Weight loss.... yeah I'll give you a tenth on that.... It leaves 2 tenths on the table..... I think that's where the LE/TH400 combo helped..... but appreciate you saying where you came up with it......Your logic wasn't completely off base..... But 400's that are race built I think are entirely different animals than built 4L60's....
My car has been through 2 th400s, a 4l60e, and a t56. I might have made this swap before and based my statements off some first hand information. I was wrong and he gained (good for him), but asserting that someone is il-informed when a ton of other changes were made after the original statement is retarded.