That would be a smokin deal!
R6/P8 Engine platform
- Thread starter tvt59
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SSG_Karg
Enhanced member
@pink340swinger
Isn’t this the platform you use in your race car?
Isn’t this the platform you use in your race car?
I have a R3/W5 441" to go in my Dakota. In a couple more seasons I'm thinking about stepping the hp up some.
pink340swinger
Well-Known Member
No, I run W9 368 engine and an Arrington headed 312 engine.
9secRR
Well-Known Member
450'' W7... thinking of selling...why you gotta say that...now i want to make a road trip
Back in 2003, the NASCAR style R5/P7's I was involved with made 830hp, and made more later on until the R6 came out. The R6 blocks were not short deck, NASCAR kept everything at 9.000" deck by rule.⁰
The R6/P8's didnt make any more hp, but unlike the R5 had water between the cylinders, were closed deck, and 4.500" bore space. An advantage was that they ran cooler, which allowed more tape on the grill.
The R6/P8's didnt make any more hp, but unlike the R5 had water between the cylinders, were closed deck, and 4.500" bore space. An advantage was that they ran cooler, which allowed more tape on the grill.
May as well toss in some R07 parts in the mix. Heads and intake for $500
R07 NASCAR Heads and intake
The rockershafts would probably cost $4000 unless you could find some used.
Tom
R07 NASCAR Heads and intake
The rockershafts would probably cost $4000 unless you could find some used.
Tom
B3422w5
Well-Known Member
Here is a complete engine ready to run. I have seen them a good bit cheaper
DODGE R5 P7 RACE ENGINE – Circle Track Warehouse Inc.
DODGE R5 P7 RACE ENGINE – Circle Track Warehouse Inc.
They are a Ford main bearing, so I wouldn't be running a stroke over around 3.8" or thereabouts. 4" stroke will net next to no journal overlap. I would call Bryant or Winberg and see what their thoughts are, and what their current lead times are. Also, the big ends are 1.85", there are no undersize bearings available for that journal size. If you were getting a custom crankshaft made, you'd go to a Honda big end, as more bearing options are available.
Generally speaking, people buying ex Nascar Dodge engines are almost entirely motivated by the purchase price, and never consider the requirements of what they need to run at their best.
Best of luck, I'll be interested to see how you go with it all.
Generally speaking, people buying ex Nascar Dodge engines are almost entirely motivated by the purchase price, and never consider the requirements of what they need to run at their best.
Best of luck, I'll be interested to see how you go with it all.
MOPAROFFICIAL
If it has tits, it's a liabilititty.
I'd make sure you can even get a camshaft for one
I decided to keep my W7 stuff. Brett thinks that he can put his W9 ports in my W7 heads. Then I think I can make the power that I'm looking for.
I've noticed this as well, I don't know of one N/A max effort R5 out there.
There is a large following, and growing, for the R5P7 in many forms of racing. It is what I would like to run in my Charger race car. Perfect for my needs. Facebook has a group dedicated to them. The R6P8 is better, more RPM and HP. I know Aaron Brown at the Garage Shop has several in stock and runs one in his Landspeed Daytona. Not something for street driving, but can be amazing for certain racing. I want one!
superbeesrt8
Well-Known Member
THE R6 IS A COMPLETLY DIFFERNT MOTOR THEN THE OLD R5 MOTORS MOST GUYS RUN NOT EVAN SURE WHAT the bell housing pattern is THEY ARE A GREAT MOTOR BUT YOUR ONLY GOING BE ABLE TO MAKE IT SO BIG WITH THE SHORT DECK AND MAIN SIZE IVE HAD BOTH MOTORS AND THE R6 MOTOR IS VERY HARD TO FIND PARTS FOR BUT YOUR GETTING 3 OF THEM SO THAT SHOUILD NOT BE A PROBLEM ID CALL EDDIE MIDDLETON HE WAS THE HEAD GUY AT PENSKE ENGINE ROOM HE WILL KNOW MORE THEN ANYBODY PM ME ILL GET YOU HIS NUMBER DONT LIKE GIVING IT OUT TO EVERYBODY
Bob Book built an R5 engine last year, but it might have been a nitrous engine, I can't remember. Still made decent power though.
An old friend starting building an A/EA engine based on a R5/P7 engine. Went as far as having CFE do the top end and Comp do a camshaft. Didn't finish it, as he felt there would be little interest in people buying them. This was 15-20 years ago, when SB2.2 engines started becoming popular in the class.
B3422w5
Well-Known Member
I am kinda surprised( as good a head as the P7 is, and cheap, relatively speaking) that nobody I am aware of has stuck them on that Ritter block that was built with the intention of having those heads on it.
Maybe that block didn’t actually become available? Not sure.
I know those heads were on an extremely reputable bench locally, that I know from track results and numbers off that bench that jive, that those heads busted 400 on this bench. They are really good.
Bob Book built a P5 headed engine 422" I think He went 6.84 @ 200 mph in a legal B/A I think. They claim that it is the most powerful Small Block N/A in the world.
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Westcott will make a cam core for anything
Better give Bob a call and ask him yourself, a B/EA with a 422 would have to weigh 2743 lbs., and required to run a single 750 carb.
Would need well over 1300 hp to run 206 at that weight.
B3422w5
Well-Known Member
Yep. Get your wallet out.
I already have, cheap or fast, you ain't getting both
PRH
Well-Known Member
The current NHRA record for B/EA is 7.53@177.67, and was set on 3/2/23.
That engine was P5 headed, and It was B/A I believe
Yes sir it was. It was P5 headed. I corrected my statement
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