Scott J D3 head flow

Anyone know what the valve size was on his head flow numbers in the cylinder head info sticky? Curious if it had 2.19/1.76 or the 2.08/1.65

2.2 intake, 1.8 exhaust.

Thanks for the info, thats kind of weird setup.

Has anyone did a 2.19/1.88 setup?

4" total valve displacement on the iron heads. 2.19+1.88= 4.07"

Oh yea, sorry about that. I am brain storming ideas on every inch of my motor build.

Here is another twist, hopfully scotty will chime in. How would the head flow and say a comp xe284 with +.100 longer valves react to a 520 or a 545 stroker? Looks like that a 466 will yeild the best power band. The big cubes according to my computer will choke my heads. I know more lift will improve the band. Mabe a 466 with +.100 valves will be what I am looking for.

The 284 will probably be a little small for the bigger motors IMHO. The cam in my 552 is a 240@.050 or pretty close to the XR292R with a 118 LSA and it is a small cam for this size motor. It pulls the necessary vac for my rules and really comes alive the higher I spin it. A larger cam with about 275 @ .050 would be better with these heads and the 552ci.

I would love to have a roller cam. I just can't afford it right now. I was looking at the hydralic or the solid. I want to put a tunnel ram on it. I figured a slightly smaller cam would bring in the bottom sooner but the tunnel ram will pull beter on the top. My problem is the bigger stroke chokes out the heads. I want a lunati cam instead of comp. { dumb comp cam quest, use only there cams } How manny ppl have a 545 or bigger with d3 heads running good and power pulling to 6,000?I want a max build with a small budget. IE My d9 block is ready to go. 2y crank will not fit. I have to buy rods, pistons for insurance, so either spend money on machining my d1 block or buy a nodular stroker crank? Cubes sound nice but I want it to run like a raped ape.

Mine is a 552 with some really worked over DOVE's that max out at around 340cfm@ .800 lift. I have about 600 hp on tap and it pulls past 6k rpm easily. The solid flat will produce about the same hp as my roller will, so don't be afraid of the flat cams.

Thanks a lot Schmitty. I like that, I will get some better heads later, I have been eyeballing some cj heads as well as PI heads that are going cheap. I am going to do the port work myself. I am going to pay my $25 to scotty to learn the max port job. I love a factory looking engine with real balls underneath the iron. If I can I would like the other heads but I would rather put the money in the bottom and if I can get PI's or something like that it would be icening on the cake.

Most home porters will get 320 cfm intake and 170 to 180 exhaust. I provide plenty of information on the site for guys to get good flow numbers but I do not give away some of the secrets that make my ported castings unique.

A 340 cfm @ only .700" lift intake port and 200 cfm exhaust port will support 700 HP plus in a roller cammed high compression combo.

A 10.6 to 1 545 with an XR292R solid street roller and my ported iron will make 680 HP. Home ported will be 20 to 40 HP less but still admirable. Have you ever driven 680 HP on the street? It is an experience you will not soon forget.

One important consideration when doing a stroker combo is to cam it properly, use a single plane intake and plenty of carb capacity.

When I port iron I focus on average flow and do not focus on nor port for flow at .800" lift that less than 1% of folks would ever utilise.

Hey Scott, I tried to call your shop today to get some more info but that was OK I did talk to Paul K and told him I was going to pay my money to you for you info. I will do it tomorrow on payday. I want to do a tunnel ram with the dual 600 holleys. I talked with steve at lunati and he told of their new voodo solid flat tappets. I have one picked out and I am 99.5% sure that is what those parts will consist of. I know the cam is a huge role and the heads are well. I am sure all the info I got is as good as it get and looks like that is the way I am going. The only thing that will change is if I can get like a PI head or so to have a better flow and a better exhaust. If it winds up with my D3's with scott's instructions and a good valve jod with the right setup it will still work. Thanks to all you guys for all of your input, all this is wroth more than money. Knowledge is my domain. I'd rather ask to much than think about the what if's. To who reads this I am one happy guy and these guys are the best.

Hey guys the money spent for the info is money well spent in my book. Scott has replied quickly to any questions I have and I can't wait to start cutting.

Neither can I!!!!