Prefix 9 0L with Drysump build

[theacr_viper]

Hey guys,

I don't usually post that much, but I want to engage more in the community and share some of my experiences.
I had my ACR for 2 years now, Arrow Heads Cam. Had issues with the motor the first year! couple oil pump failures! Dick ordered me a custom copper cam later to prevent the cam from chewing the block if it seizes. Had to tune the car with HP tuners which sucked. Got the car running great but still doesn't run as good as it used to be with Dick's tune.

Talking with Scot at prefix and Stradman (Alex). The 9.0L block seem more suited for the track with all the oiling tricks done to it. Also after replacing 3 oil pumps! I was done with the shity part, so going dry sump. I wan't to have a piece of mind at the track! It's 90% track car. I barely take it out on the highways as in Dubai there is speed radars and a lot of speed bumps which are as high as a mountain lol. Being oversees and shipping expenses shipping my engine back and forth, cheapest option for me was getting a whole new engine and Selling my current one (which someone already got).

I used to live in North Dakota for 6 years, so I know how hard it is to deal with people overseas (time differences). This is a big THANK YOU to Scot and the team at Prefix. For being Clear, helpful and Honest about all the small details from the start. From cost to the build to the communication. Never tried to force anything, explained all the cons and pros of how I want the build to go. Scot replied to everything I asked about, Answered all my phone calls even though he was busy. Big respect.

I went with Clevite bearings, ARP Main and head studs, dailey dry sump! Also relocate the oil filter with the clear view oil filter remote adapter.
The engine is getting shipped soon, Will be in Dubai in couple weeks. I should have the car running within a month after sorting out all the dry sump oil line plumbings and tank placement.

Abdulla
Instagram : TheACR_Viper

[theacr_viper]

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[theacr_viper]

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[moe.basilo]

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good luck in your build abdulla. hopefully the car runs great and you have a blast brother.

[GTS Dean]

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It looks like an awesome build!! That Dailey oil system is a beautiful piece of engineering. Looking at the main studs, all down the near side of the photo there are extensions for what was originally the windage tray attachment. Except for the #3 cap, all the far side fasteners are short. What's up with that?

[theacr_viper]

It looks like an awesome build!! That Dailey oil system is a beautiful piece of engineering. Looking at the main studs, all down the near side of the photo there are extensions for what was originally the windage tray attachment. Except for the #3 cap, all the far side fasteners are short. What's up with that?

That's a good question for Scot! I did upgrade to ARP main studs! even though there is holes on the dry sump pan for the regular long studs! I'm sure someone have an answer for that!

[Scot@Prefix]

It looks like an awesome build!! That Dailey oil system is a beautiful piece of engineering. Looking at the main studs, all down the near side of the photo there are extensions for what was originally the windage tray attachment. Except for the #3 cap, all the far side fasteners are short. What's up with that?

The ARP main stud kit only has the extra threaded portion on the studs that need it. So the studs that mount the oil pump, and the crank scrapper are the only ones that get the extended tip studs.
The factory bolts are all the same and all of them have the threaded stud on top of them.

[theacr_viper]

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[theacr_viper]

IT did 808HP and 750TQ
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[Old School]

IT did 808HP and 750TQ
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There's a lot of meat in that torque curve, >600ftlbs once you cross 3500rpm.

[Whitey]

There's a lot of meat in that torque curve, >600ftlbs once you cross 3500rpm.

Your observation is so relative to this dyno chart and difficult to fully appreciate in words. The Prefix 9LX conversion typically creates ~600 lb-ft. at ~3500 RPMs and increases up to ~750 lb-ft.

For perspective, 600 lb-ft. is the maximum torque output of the OEM stock motor (645hp / 600lb-ft).

I do realize there are ways to create more torque and horsepower, but for a naturally aspirated motor (with GPS, A/C and leather seats - LOL), it is hard to dispute this is an exceptional conversion. I have 4,500 miles on my 9LX and the red button works everytime.

Congrats to the OP and Scot/Team @ Prefix on the 9LX. The dry sump is exceptional!

[ACRSNK]

Thats awesome Scott seems like a standup guy appears to have helped a lot of people on here even though they may not have used him to do a build top notch character

[theacr_viper]

Thats awesome Scott seems like a standup guy appears to have helped a lot of people on here even though they may not have used him to do a build top notch character

True that!

[J TNT]

Thats awesome Scott seems like a standup guy appears to have helped a lot of people on here even though they may not have used him to do a build top notch character

Scot , Dick , Dale and the TEAM at Prefix are All Top Tier !!!

[Arizona Vipers]

Thats awesome Scott seems like a standup guy appears to have helped a lot of people on here even though they may not have used him to do a build top notch character

Scot is awesome, extremely responsive and helpful! He even spent over an hour in the scorching heat in Nebraska helping me with some electrical issues!

[ACRSNK]

Scot is awesome, extremely responsive and helpful! He even spent over an hour in the scorching heat in Nebraska helping me with some electrical issues!

That's really cool. Heard nothing but great things from everyone that has dealt with them. That is a rare thing these days and really nice to see.

[Scot@Prefix]

Thank you for all the kind words!!
We appreciate everyone in the viper community!

[catwood]

Everyone?

[SRT_BluByU]

Do they grind the connecting rod journals on the crank to chevy small block sizes or is callies making the ultra rods in viper sizes now?

[Scot@Prefix]

Do they grind the connecting rod journals on the crank to chevy small block sizes or is callies making the ultra rods in viper sizes now?

The stroker crank was designed with a chevy rod journal

[SRT_BluByU]

Thanks Scot - That explains it.. i was getting excited for a bit that maybe they were stepping in to viper specific items. Oh well - ha! do you all use the big or small journal sizes? Awesome work (as expected from you all)!

[Scot@Prefix]

Thanks Scot - That explains it.. i was getting excited for a bit that maybe they were stepping in to viper specific items. Oh well - ha! do you all use the big or small journal sizes? Awesome work (as expected from you all)!

The stroker crank was designed with the SBC rod journal, that way a chevy rod can be used. Much more selection and ease of obtaining parts!
The do make a stock stroke crank that has the OE rod pin journal.

If we are using a stock crank always stick with the stock rod journal size, if you turn it down to the SBC size the crank becomes too thin between the lightening hole and journal surface.

[sadil]

Hey Abdulla! Nice build man. Please document the dry sump system thoroughly. Would love to see how it is all setup in your car. That is a dream modification.

[theacr_viper]

Hey Abdulla! Nice build man. Please document the dry sump system thoroughly. Would love to see how it is all setup in your car. That is a dream modification.

Thanks Sadil! Yes I'll share everything about the dry sump! I'll post videos when it's all done. I'm getting a petersons 3 gallon tank for placing it infront of the passenger wheel. will corner balance the car, and test it this season! I have concern about corner entry having 3 gallons infront of the wheel but the ACR makes ton of downforce in the front so it might not be an issue. only way to find out is testing it. Don't really want to install it in the trunk but will see what happens. I'll be dropping some weight of the car as well going carbon bucket seats! and a lot of carbon parts from Doug!

[Arizona Vipers]

Thanks Sadil! Yes I'll share everything about the dry sump! I'll post videos when it's all done. I'm getting a petersons 3 gallon tank for placing it infront of the passenger wheel. will corner balance the car, and test it this season! I have concern about corner entry having 3 gallons infront of the wheel but the ACR makes ton of downforce in the front so it might not be an issue. only way to find out is testing it. Don't really want to install it in the trunk but will see what happens. I'll be dropping some weight of the car as well going carbon bucket seats! and a lot of carbon parts from Doug!

Get Doug Shelby's new foam core splitter extension, it'll take 7 lbs off the nose to help offset the extra weight of the tank and plumbing etc.