Author Topic: LS1 & LT1 MAFs - tested and working  (Read 4943 times)

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Offline earlbrown

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LS1 & LT1 MAFs - tested and working
« on: June 26 2013, 04:32:15 PM »



3" LT1 $50 shipped and 3 1/2" LS1 $80 shipped lower 48

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'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline tb3

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Re: LS1 & LT1 MAFs - tested and working
« Reply #1 on: June 26 2013, 08:21:57 PM »
I've reported you to the admin.
I'm pretty sure you haven't paid your vendor fee's here.
 
 
 
 
 
 
 
 
 
 
 
 :rofl:
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Offline daveismissing

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Re: LS1 & LT1 MAFs - tested and working
« Reply #2 on: June 26 2013, 09:34:57 PM »
What about all the other illegal bolt sets? What are we, chopped liver?


edit
I see we are not, we are goose pate
http://www.ihadav8.com/forum/index.php?topic=4058
« Last Edit: June 26 2013, 09:40:24 PM by daveismissing »
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Offline earlbrown

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Re: LS1 & LT1 MAFs - tested and working
« Reply #3 on: June 26 2013, 09:39:26 PM »
Look below this post, cube steak  :P
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline earlbrown

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Re: LS1 & LT1 MAFs - tested and working
« Reply #4 on: June 26 2013, 09:43:12 PM »
I've reported you to the admin.
I'm pretty sure you haven't paid your vendor fee's here.
 
 
 
 
 
 
 
 
 
 
 :rofl:


 And you know I manufactured these things here at vendor headquarters!
« Last Edit: June 26 2013, 11:39:40 PM by earlbrown »
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline daveismissing

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Re: LS1 & LT1 MAFs - tested and working
« Reply #5 on: June 26 2013, 09:45:06 PM »
-Drain plug by Earl Brown, custom oil pan by Rich's Auto

Offline tb3

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Re: LS1 & LT1 MAFs - tested and working
« Reply #6 on: June 27 2013, 08:59:56 PM »
I've always wanted to do a back to back run from a lt1 to a ls1 maf.  I remember turbodave posting his results once and I think there was a improvement.
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Offline Steve Wood

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Re: LS1 & LT1 MAFs - tested and working
« Reply #7 on: June 27 2013, 09:31:49 PM »
maybe when one is in the tens?  Maybe
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Offline tb3

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Re: LS1 & LT1 MAFs - tested and working
« Reply #8 on: June 27 2013, 09:41:39 PM »
going from a stock 84/85 maf on my hot air to a lt1 and translator was the single biggest improvement to a smooth idle. 
I'm still using a lt1 on my 87.  I've no desire to be in the 10's, so I guess I'll keep on using it.
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Offline earlbrown

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Re: LS1 & LT1 MAFs - tested and working
« Reply #9 on: June 27 2013, 09:42:52 PM »
I don't think it's so much of an improvement as it is getting rid of a cork.  I spend some quality time with some measuring tools a couple weeks ago....

My 3" MAF pipe has a cross section of 6.47 square inches. An LT1 MAF has an area of 4.3 square inches. (66.46% of a 3" MAF pipe)

An LS1 3.5" MAF has a cross section of 5.275 square inches. Even though it's a "3.5"" unit, the actual flow area is only 81.5% of a 3" MAF pipe.

I'm guessing that's the reason for the reports of faster spool.  For the longest I always thought it was dumb to put a 3.5"MAF on a 3" pipe as it can only flow as much as the weakest link. Turns out the numbers on the cross section don't lie. Just for kicks a couple weeks ago, I stepped up from my 3"X14" K&N to a LS1 then back down to the 3" pipe. I could her more turbo whistle and there was quicker spool.  The butt dyno didn't have an opinion either way.


 That being said, if you're blowing the tires off with a 3", a 3.5" isn't going to give any additional performance.
« Last Edit: June 27 2013, 09:47:23 PM by earlbrown »
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

 

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