I know a couple of people were building this combination and have a couple of questions.

1. Has anyone completed one?
2. If so, what kind of results/power did you make?

Thanks!

Me too....Inquiring minds

I searched and all I came up with was Moparts member jg309(?) built one but had to sell it for some reason. I don't remember anyone actually ever saying that they have built and ran this combination.

Jg is the only guy I know of as well, never heard if he sold it or who he sold it to.

I've been back and forth so many times on what to do with all of my R5/P7 parts. I really would like a mean n/a street driven small block with the ultimate dream of running it on Drag Week. I've debated on Gen III Hemi stuff and sold it. Debated on W5 stuff and sold it. Came close to purchasing some W8 and W9 parts but, at the end of the day I keep coming back to my R5/P7 parts. I believe hands-down next to the P5 the P7 heads are the best way to go.

R5/P7 Duster: When you were running a 4-speed, how did it perform being shifted at or above 8,000 rpm?

When I had the 833 stock, it was miserable. So I had liberty pro shift it. That helped until around 8800 and it sometimes still would not go into gear even with a Hurst v-gate. With the 833 it was streetable and was a blast on the street. Even with the low torque numbers in 4th gear you could punch it and once it would hit about 5800 it would roast the tires. So if you could find a manual that can handle the rpms and shift you'd have a sweet set up. Since I switched to the 904 it doesn't like the street so much with the 7000 stall converter.

Low rpms it also cruised fairly well, it didn't like lugging below 3200 in any gear over 1st. But even my w2 340 didn't like driving under 3000. So it didn't bother me at all

Thanks for the info about the 4-speed!

I dont think jg309 sold his are as of the last time i talked to him he hadn't. Mine is getting closer, at a machine shop getting cam tunnel honed, mains honed and lifter bore cross drilled for pushrod oiling. The biggest issue is cam. As of now lsm is the only cam company that will make the cam. Very pricey. I had an engineer at comp make me a blueprint for a cam but it does not match up to the block. I have been talking to Kent to see how many of these blocks have been sold. Comp said they could get the price down if we could get more cores built. The machine shop that my block is at said they could digitize the lifter bore and the block for a blueprint that then maybe we could get with comp for a cam. Right now they want $3000.00 for 1 cam or $3000.00 for 3 cams. Lsm make their own cam core. I think comp may be buying their cores from lsm. None of the other companies have showed any interest in even building a cam. Mine is going to be a blowthru carb 106mm tubo deal. Getting closer but seems miles away. Not anybody to ask question about on how to get everything right. John and I have talked a lot and he has been a great help in trying to get mine together. If you have any specific questions ask away, and i will try my best to help. Brian Williams

What about regrinding an existing Nascar cam?

WOW

$3000 for a cam that's how much the block cost!!! Glad I didn't go down that road.. I was ready to pull the trigger and at the last minute I told Kent I wanted to wait.

I think Johns cam is a reground nascar cam. The turbo cam needs to be on a wide lobe seperation and none of the cam cores will go wide enough. Lsm will make you a custom cam for $1200.00 I think Johns cam was cheaper as a naturally aspirated cam. I was just trying to get a dedicated cam for these blocks. The $3000.00 was basically for them to build the cores from scratch. I would go the 3 cam deal if i went with them and then have future cores.

Did they make an adapter for the snout of the cam?

John has been talking with Errnie Elliot engines and has come up with a $1000 plus horsepower combination I beleive. I will call him and see if maybe he will chime in. Major potential in this combination. Just wish i had a more many to play with. For me its 1 part at a time.

Thanks for all the info. I will be picking up my XR2 block from Kent this weekend.

No they just ground the front of the cam to small block dodge cam gear. The nascar cams are currently built on a small block chevy cam 3 bolt gear setup. The reason that was done is because when dodge got back in nascar crane was the people making the cams and in a hurry to get cams for a race that is what they put on the cams, and they never changed from that design.

Tell Kent Brian Williams said hello. You will not meet a nicer guy. He can help you with a lot of the parts you will be needing. Just ask for what you need, He may have it. Distributor, lifters, lifter bushings, cam bearings,gaskets. On the lifter bushings make sure you get biderectional bushings. There is a specific way the bushings go in the block to clear the cam lobes. Being based off of a small block dodge oil galley the nascar cam tunnel the oil differently.So it takes a bidirectional lifter bushing to get the oil hole in the bushing to meet the crossed drilled hole in the lifter bore with the keyway in the correct direction.

I'll make sure and tell him hello for you. I'm looking forward to getting the ball rolling on this build. I plan on putting it in my 68 Valiant with a 4-speed. There should be no reason at all that this combo shouldn't make 800 hp and drive it on the street reliably.