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| Steve40th | LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
 
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I never thought that TPIS even would make the mini ram for LT1. SO, the question is, is it a better design than the LT1/4 manifold. And, will it cure allot of guys split BLMS with large cams etc.
http://tpis.com/parts/view/36 |
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Posted on: 2010/9/7 6:33
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| BrianCunningham | Re: LT1 Mini ram from TPIS, interesting | ||
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Senior Guru
 
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Actually GM stole the idea from then
Wish it had a distributor hole |
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Posted on: 2010/9/7 16:17
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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Its definitely not cheap.
I was actually thinking of cutting the top off the LT1 manifold and making it a dual plane intake by putting a plate down the middle, to fix the reversion of the big cam issues and making the blms split at idle. But, dont know if the throttle body can provide enough for the engine then |
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Posted on: 2010/9/7 16:22
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| bogus | Re: LT1 Mini ram from TPIS, interesting | ||
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Grand Imperial Pooh-Bah
 
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have you looked into the Edelbrock intake?
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Posted on: 2010/9/7 16:54
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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Quote:
Yep. But the only reason I would change my manifold is if the manifold has a better idle circuitry or is able to overcome reversion due to my cam, causing BLM splits. A 94 and up LT1 can tune the cylinders. HMM, maybe I can change to a newer pcm, get sequential fi etc etc. |
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Posted on: 2010/9/7 17:05
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| Aardwolf | Re: LT1 Mini ram from TPIS, interesting | ||
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Quote:
Some thoughts.. Is the only difference that there isn't a thermostat housing in the front? If so you could save a lot buying a normal used model and removing the housing or using block off plates for the openings (dizzy/'stat). |
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Posted on: 2010/9/7 19:09
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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Quote:
That and that you could use a regular distributor in the back as there is a whole for access built into it. |
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Posted on: 2010/9/7 21:28
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| rklessdriver | Re: LT1 Mini ram from TPIS, interesting | ||
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Steve your going about this all wrong....
What you need is a Converted Single Plane intake, way bigger camshaft and then you can run an open loop tune (like me) and forget all about the block learn function of the ECM. Will |
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Posted on: 2010/9/8 1:11
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Quote:
Will, good points, but the Admiral will probably have something to say about that change. Seriously, My Vette is running pretty good. I am going to ignore the blm split at idle, as it cant be tuned out with our ECM and in closed loop. Many have tried, but no one honestly has a cure or fix on a 92/93. |
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Posted on: 2010/9/8 1:17
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| pr0zac | Re: LT1 Mini ram from TPIS, interesting | ||
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Quote:
This means it also has a SBC style distributor hole t the rear, enabling you to use an aftermarket EFI system and eliminate the need for the GM Opti-Spark distributor. |
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Posted on: 2010/9/10 2:23
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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The potential to eliminate the Opti is always a good thing. Of course, I dont want to deviate from the reason this topic is up, as we all have our opinion on the Opti. |
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Posted on: 2010/9/10 2:29
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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This from TPIS
"The Factory LT manifold has an advantage with the idle specific passages. The Mini-Ram doesn't have this. We generally use it on engines in the 540 and up HP range. Split BLMs are usually only a problem at idle and clean up once a load is applied. There are some programming techniques that can clean it up as well." This is not in reference to the L98 Mini Ram, just the LTx type |
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Posted on: 2010/9/10 16:17
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| JAKEJR | Re: LT1 Mini ram from TPIS, interesting | ||
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Ive read posts from guys claiming to have split BLMs and they all seemed really upset about that condition.
What comes to mind, for me, is what difference does it make? I mean REALLY make? The system has obviously corrected for what ever differences the sensors reported, as it should, so where's the cause for concern. So basically I'm asking, let's say one side has a 132 BLM and the other side 124 - SO WHAT!? Jake |
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Posted on: 2010/9/22 3:26
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| cuisinartvette | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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Havent seen the LT1 specific mini yet but imo the L98 mini trumps the LT1 piece, plenum appears a good bit larger or more area at leat with less obstructions inside-much better piece to start with.
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Posted on: 2010/9/22 3:35
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Elite Guru
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Quote:
the 92/93 batch fire systems will take the last known BLM and use it for WOT reference, so if you are split, it can cause an incorrect WOT run. That is the way I understand it. Id it wasnt a big deal, GM wouldnt have gone sequential in 94 and fixed the idle problem via the tune, by adjusting each cylinders offsets different. |
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Posted on: 2010/9/22 4:31
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| JAKEJR | Re: LT1 Mini ram from TPIS, interesting | ||
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Guru Newb
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So are you saying that only 92/93s suffer from split BLM's?
Jake |
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Posted on: 2010/9/24 4:46
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| Steve40th | Re: LT1 Mini ram from TPIS, interesting | ||
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Quote:
Its much more prominent in 92/93 LT1's, as 94-96 went sequential |
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Posted on: 2010/9/24 4:54
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| JAKEJR | Re: LT1 Mini ram from TPIS, interesting | ||
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Guru Newb
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Quote:
Yep, I understand the sequential/batch fire part it's just that I've always wondered about why so many are concerned about their BLMs being split. I'd like to read up on that condition to learn more about any other downside, other than the WOT issue you mentioned. Someone must have done some tests on that at one time or another. If anyone knows of a Tech article on that, point it in my direction; thanks. Jake |
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Posted on: 2010/10/3 5:43
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| mrbillybob | Re: LT1 Mini ram from TPIS, interesting | ||
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Guru Newb
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I read in one of the Corvette Magazines where they tested and dynoed the stock manifold and the Edelbrock Manifold. They found NO RWP improvementat all. May be a waste of money at $445.00
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Posted on: 2010/10/14 0:13
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