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Hmm...if you're going to add the stress of the extra rpm it better be worth some significant gains. The hi-ram will be interesting See how much restriction you've been dealing with. Is the base of the hi-ram as cast or ported?
Hmm...if you're going to add the stress of the extra rpm it better be worth some significant gains. The hi-ram will be interesting See how much restriction you've been dealing with. Is the base of the hi-ram as cast or ported?
The "test" high ram has no additional port work done. My high ram base had some port matching done to my heads but no additional work.
We will be using the test intake setup as a complete unit, as they sent it with the modified lid and a 112mm throttle body already attached.
In fact, JMB just sent me some pics...he already yanked my pTr intake and has the new test intake installed LOL
We need to add some additional vacuum ports but should be ready to fire up and make pulls this afternoon
Has anyone sent you a CID single plane intake to play with or are you only interested in forward facing intakes?
Erik has talked about it, and I would throw one on there just to get the data for him...but no DBW 4550 carb style. throttle bodies unless we buy an adapter to bolt the 112mm in the upright position.
There is supposedly a DBW throttle bodty coming from kinsler...but well over 4K
Long term, I will only use forward facing intake on the Z regardless of what makes the most power.
I forgot about DBW - I have an LS7 port 4.5 CID intake and Holley 2000 cfm 4500 tb sitting at home in a box.
I think a 112 to 4500 flange adapter wouldn't be too hard. Someone could 3d print one for a dyno test if the dimensions were known. Does this exist? Is it something that is actually needed?
I forgot about DBW - I have an LS7 port 4.5 CID intake and Holley 2000 cfm 4500 tb sitting at home in a box.
I think a 112 to 4500 flange adapter wouldn't be too hard. Someone could 3d print one for a dyno test if the dimensions were known. Does this exist? Is it something that is actually needed?
Not sure....I'm playing in a new frontier at the moment. We ran Jon Simpson's 6500 Accufab on the engine dyno and picked up 20 crank horsepower with no other adjustments, but the dyno was set up for cable driven throttle from the get go.
Erik has talked about it, and I would throw one on there just to get the data for him...but no DBW 4550 carb style. throttle bodies unless we buy an adapter to bolt the 112mm in the upright position.
There is supposedly a DBW throttle bodty coming from kinsler...but well over 4K
Long term, I will only use forward facing intake on the Z regardless of what makes the most power.
Originally Posted by Corona
Same problem as Chevelle....
I talked with Kinsler directly about this DBW TB, 18 months ago or so. It’s legit, but pricey. I was told I could get into one for $3200ish, because it was the holidays and sales were going on.
For me, it wasn’t about the price necessarily, but the motive behind what I was thinking about doing. I wanted a 620hp, 434 for the Chevelle, that was streetable and pump gas friendly. I got just that. The CID intake and this new DBW tb would have been interesting to see what “could be”, but I know myself too well, and I know where this would lead eventually. I would end up with a car that’s an undriveable race only deal that I hate. I would not have stopped there… I’ve had plenty of fast stuff that I hated on the street, so my inner wisdom kicked in and simply said no.
Not sure....I'm playing in a new frontier at the moment. We ran Jon Simpson's 6500 Accufab on the engine dyno and picked up 20 crank horsepower with no other adjustments, but the dyno was set up for cable driven throttle from the get go.
Do you want to get me the bolt pattern of the 112mm tb and I can see if my buddy wants to print one? He has a printer at home it’d be a simple part.
I am wondering if you (if available) test a CID intake and TB. I realize forward facing etc. I think the purpose of the test is what is best intake out there and how much is left on the table given the fitment restrictions and long term goals. For all we know the CID gets you only 20 hp, or 50 hp, or gets you 20 hp but you loose 30 tq from 3k-6K rpm. I think knowing this outcome may help you with what you got - for me its worth 20 hp or more to be able to close my hood or have good drivability and TQ curve etc. BTW if we are showing Chevelle pictures here is mine. The first photo was in 1982 and the second is 2018 same parking spot - 540 CID.
I talked with Kinsler directly about this DBW TB, 18 months ago or so. It’s legit, but pricey. I was told I could get into one for $3200ish, because it was the holidays and sales were going on.
For me, it wasn’t about the price necessarily, but the motive behind what I was thinking about doing. I wanted a 620hp, 434 for the Chevelle, that was streetable and pump gas friendly. I got just that. The CID intake and this new DBW tb would have been interesting to see what “could be”, but I know myself too well, and I know where this would lead eventually. I would end up with a car that’s an undriveable race only deal that I hate. I would not have stopped there… I’ve had plenty of fast stuff that I hated on the street, so my inner wisdom kicked in and simply said no.
You hit the nail on the head.
My quest was not for a specific power output, but something that could fit in the Z to see if i could hit a set of performance metrics in the 1/4, 1/2, and ultimately 1 mile......all with the same setup (minus a tire change).
I'm borderline race car engine right now, and power gains at my level are going to require big ticket induction items that won't fit the Z06's hood line with out modifications.
I'll test what I can get my hands on, and whatever is sent to me that we can easily bolt on. I'll try anything that HPR wants to try, as they have 468's in stuff that doesn't have the limitations I do.
It's not far fetched to think I'll pull this engine and stuff it in my 70 Chevelle, where a CID and carb style throttle body would be an option, but i'm a ways off on that at the moment
For all we know the CID gets you only 20 hp, or 50 hp, or gets you 20 hp but you loose 30 tq from 3k-6K rpm.
This is what gets me about the word drivability and a difference. I get the hood ....but here's where the dookie hits the fan. 50 ft pounds and it's being noticable cause of a flat Tq curve. If a person goes in with the premise of using a carb style intake cam it for that intention. You'd gear the car a little differently and Not by much and enjoy. Example (3.73 using a MSD vs 4.11 with a Carb) You'd press on the gas a little more which is always fun if the carb uses the 3.73. Using a 4.10 gear would equal to that 50 ft lbs due to ....also places the engine in a better rpm range for use with a carb.
That word is all in the eye of the beholder. Again i get the hood.... I look at it for what it is guy builds bigger to make it not a race engine due to using less rpm & Being able to blow the tires 1st thru 3rd is more drivable. 600 ft pounds is blower territory. I definitely Wouldn't want to drive in the rain with the Extra. Ref. Yesterday and me driving in a Monsoon with Traction control ON.
Well the good news on the C6 Z06 / ZR1 cars is we finally have some rear gears to choose from 3.90 /4.10 vs 3.42 OEM. The Z06 and ZR1 have special larger 9 inch gears (vs 8.25) and bigger housings etc. The gears finally came out in 2019. Here are some photos of the differences.
Well the good news on the C6 Z06 / ZR1 cars is we finally have some rear gears to choose from 3.90 /4.10 vs 3.42 OEM. The Z06 and ZR1 have special larger 9 inch gears (vs 8.25) and bigger housings etc. The gears finally came out in 2019. Here are some photos of the differences.
yea and the gears are 850 bucks lol....but i did buy them
Update - 1st few runs with the "test" high ram...... 698/565. Max power coming in at 7300 RPM and we are running on by base flex fuel tune.
Additional goodies arriving tomorrow which may just push us past the 700 mark...... stay toooooned
SAE,Standard, and Uncorrected numbers posted below.
Comparison between my 691 baseline pull and yesterday's 698.....you can see the fueling differences in that 5000 range when peak torque is roughly. We will concentrate on getting that adjusted and we will see what the results are. Additonal intake goodies arrive today
11-03-2021, 10:43 AM
