Warp Factor

You have a gauge that shows post-intercooler temperature? Or are you guessing, based on theory?
Larger bricks in the blower doesn't really tell anything. Part of the equation is whether the heat exchanger in the front of the car can effectively shed any extra heat the bricks can absorb.

ShaneFap

you guys can't compare apples to oranges here.


"Oh this guy has a 2300 or heads and cam or ported blower and he gained blah blah blah"

OP has a un ported 1.7 OEM blower. ZERO GAINS

Now when you have a ported inlet to match a larger TB there will be gains on most combos.

3 Z06ZR1

I no longer own a Z06 with the 1.7. No matter to me. Nothing the same to compare.. Your 1 result doesn't mean the 95 is not a good mod either.
You are doing apples and oranges yourself!
Too many different factors
His car is far from stock! Upper and lower pullies etc!

PLUS the 95b you tested is not the same, mine is a NON ported 95! Maybe too much flow ! So you cannot say the regular 95 has no increase on the 1.7.
You didn't test my regular 95 tb on a like car. I feel ON MY car the 95tb did get some top end power and you have no basis to say different/
Same car owner claimed NO increase from the Halltech intake. Where the Halltech picked up 40 rwhp on my Z06.


I swap the 2300 in. Then sell the 1.7 blower,
The 2300 is the better blower to use and it does a lot better with the 95TB.

BlueDevilZ51

Anyone know the size of the snout opening on the 2300 Edelbrock E force?

MrGary2011

I am in a bit of a quagmire and could use some advise. I had a LT4 Supercharger on my LT1 go south and had to purchase another Supercharger. So the new one is ported to 103mm and I am still using the 83mm throttle body. She feels pretty good but seems a shame not to get a better throttle body to get a closer match to the new supercharger.
I see multiple options here and would like a bump in performance and better low end smoothness. So which way do I go?

Leave alone
Get the LT5 95mm throttle body with adapter plate
Get the LT5 95mm throttle body ported with adapter plate
or go full out and get a Nick Williams 103 zThrottle Body (bit leery of this option)

I have been studying this for some time and seems the ported LT5 95mm would be the way to go.

Recommendations?

C7/Z06 Man

I have tried the 95mm I.D. ZR1 throttle body on my C7/Z06 with the spacer plate, it idle & drove fine with no check engine light.

Here is all you need to do being the supercharger is already opened up to '103mm'.

* First just try to bolt the 95mm throttle body up as is; it should 'not' bolt up due to a slightly different bolt pattern.

* From what I have "read" all you need to do to get the ZR1 TB to fit/bolt up is to drill the 4 mounting holes in the Throttle body out larger a 'little' bit at a time till the holes are just large enough to bolt the ZR1 95mm throttle body up. That's it, your done, don't have to buy a $50 spacer. However you can still use the approx. 95mm spacer and the 95mm ZR1 throttle body "as is" that would leave the stock bolt pattern holes in the ZR1 TB.

Note: Being that its just vacuum at that joint but not a lot of surface area I would smear a paper thin layer of the "Right Stuff" on one of the mounting flanges just before final assembly to ensure a vacuum tight connection.

PS: Your CAI should also line up better if you don't use the spacer/adapter plate.

ShaneFap

NW103 all day

C7/Z06 Man

Toddiesel

Sooooo why is this in the Z06 section and not the ZR1 discussion? Can a moderator move this?

Higgs Boson

if people were putting a ZR1 TB on a ZR1 then that wouldn't be very interesting would it?

Toddiesel

Man, you got me. I should learn to read! You earn your call sign, yet again.

MrGary2011

Good insight! When I put my TB on the ported one there was no gasket material as the SC was bored out. Good machining but think I will get some of the "Right Stuff" for now. I was thinking about possible loss of but seemed trivial since the machine was good and it is a open air intake. Seems the ZR1 Throttle body is cost effective and will keep me from needing to spend a bunch more on tune and dyno which cost around 750 where I live. But that Nick Williams is a pretty unit! Shish I will never be able to retire!

BillY2KFRC

If one was going to go with a ported LT4 blower, would there be any reason why you'd go with the LT5 TB over either the NW or Katech 103mm units? Just cost? Maybe more torque if you aren't going with a full heads/cam setup?

MrGary2011

Some things I saw were showing less power with the 103 for probably less required modifications to handle the extra intake, hence my questioning. Also, I think you can do the LT5 TB and not require a tune or get codes thrown. The 103's will require a tune. So yea there is some thinking going on as if the power increase is minimal is it really worth it (provided you stop moving the power train).

snork

is the LT5 TB compatible with the stock air cleaner tube that directly connects to the TB opening?

C7/Z06 Man

I had an AFE CAI (see above pic) with it's 'smaller' diameter air intake tube than the OEM on the ZR1 throttle body. To make installation easier I installed the AFE supplied rubber coupling on the ZR1 TB before installing it on the supercharger; makes coupling installation much easier. If you do a search I think you will find an example or two where the OEM air duct coupling to the supercharger was installed/used on the ZR1 TB.

AZGASSER

My take home from my testing, and it is specific to my set up, there was no change in dyno numbers from a ported LT4 to a ported LT5. There is a palpable lip on the inside of the SC inlet. If this was done on a ported set up, then maybe an improvement in airflow and HP would be seen. We all have so many variable in our engine bays that it is almost impossible to say the change in one part alone made a difference when compared to someone else's build. My opinion is to change this TB alone on a stock non-ported SC is a waste of time and money.

0Cajun @ Edgyvette

You hit it on the head. At Edgyvette we only sell our LT5 ported TB with MSD Atomic intake or our ported SC snout to match. https://www.edgyvette.com/product/ed...adapter-plate/

MrGary2011

Do you think thats good to go with a ported LT4 SC to 103 mm with a LT5 Throttle body, or should I go 103mm TB?

AZGASSER

I would suspect that the difference in HP would be minimal between the two however I have been seeing more 103mm TB going in. I am pulling the SC and going with the 2300 in two weeks. Doing the 103 with that. Also doing H/C and changing pulleys at the same time. It all has to be done within the limits of all the parts. If you dont have enough intake airflow then no matter what size TB you put on you will be limited. I am having a custom 5" intake made for my build. I will keep you posted with results.