pablo63

Gotcha, I had gathered that from reading a couple threads on porting the 69-70 heads. When i mentioned smoothing the radiuses I meant from the walls into the floor. The curve of the "floor" or short side radius, was left in tact.

Thanks for the advice. I left the floor pretty much alone except for smoothing the radiuses in a little after doing the walls. As far as the cam goes I was thinking of going custom but don't have much to go on right now. I may get back to you on that.

Clevors are a pretty cool beast but not what I'm looking to do. I think space will be a problem for me as it is. I have been working on porting these D5's and hope to finish one set of ports in the next couple weeks. Then I'll get some flow numbers and see where I stand. Here's a couple pics of the exhaust port. Before and after. Just have to clean up a couple spots and give it a light polish then I'll start on the intake. This is how the exhaust port started: Here's one nearly completed:

Just curious, is a Clevor build any wider or taller than a Windsor?

May have to take a look over there and see if I can track him down.

Yeah my made was made up as far as wanting to use stock iron. I was looking for porting ideas or maybe a link someone could direct me to that gave some tips or how too's. This 351 is not a priority right now so it will be a while before I get her on a dyno. Figured I'd just tinker on the porting this Winter and get a little more serious come Spring. I guess the thing to do would be see what I end up with for flow before I pick the rest of my parts. Still need to drop the block off for the full treatment also. I'll be sure and take some pics along the way and keep track of the money involved.

Not about cheaping out. More of a challenge really. I want to see what can be gotten out of an old set of heads that's all. I found a guy on another site who made 450HP with ported D5's, roller cam, 9.5 to 1 cr, stock bottom end and a Vic JR. so I'm feeling pretty confident I can come pretty close to that. He's supposed to send me some pics and tips. In the mean time I started porting the exhaust ports. Knocked down one of the Thermactor humps. About twenty minutes to get the bulk of it gone.

I've researched the heads and these are the last of the DO type castings. Larger valves, ports and unfortunately thermactactor bumps as well. The chambers are 62-64cc? so not nearly as bad as the later heads. They have the stud rockers as well so no machining there. I'm going to get started on one intake and see how it goes. If I can get 200 cfm do you guys think I can wring 400hp/tq out of her?

I stumbled upon this site while looking for info on building a 351. I was hoping someone in here might help me instead of discourage me. I have this idea to build a nice solid dependable 351 that will put down between 350-400 hp/tq at the flywheel. This is pretty easy to do with all the aftermarket performance parts out there but here's the rub. I want to do it with stock heads, rods and probably crank. I belong to a couple forums where there are alot of guys who have big money. They buy whatever they need for hp but never work for any of it. They tell me to stop being cheap or stop wasting my time. Buy this head or that kit, BLAH BLAH BLAH. They have to have 5,6,700 HP and most are probably afraid to drive their cars. They don't understand I'd rather have a car that is not overpowered and is a solid driver that can go all day long without overheating. So if any of you guys know anything about building a 351 that will do what I want please give me some advice. Here's what I have so far. A D4 351 Block, D5AE heads that I'd like some info on porting, a stock crank and rods, performer intake, pertronix billet distributor, new eddy waterpump and comp double roller timing set. I also have a cast 3.85 crank, possible 393? What cam and pistons would work good with what I have in mind? Carb? Thanks in advance I hope someone here can give me some ideas.

I stumbled upon this site while looking for info on building a 351. I was hoping someone in here might help me instead of discourage me. I have this idea to build a nice solid dependable 351 that will put down between 350-400 hp/tq at the flywheel. This is pretty easy to do with all the aftermarket performance parts out there but here's the rub. I want to do it with stock heads, rods and probably crank. I belong to a couple forums where there are alot of guys who have big money. They buy whatever they need for hp but never work for any of it. They tell me to stop being cheap or stop wasting my time. Buy this head or that kit, BLAH BLAH BLAH. They have to have 5,6,700 HP and most are probably afraid to drive their cars. They don't understand I'd rather have a car that is not overpowered and is a solid driver that can go all day long without overheating. So if any of you guys know anything about building a 351 that will do what I want please give me some advice. Here's what I have so far. A D4 351 Block, D5AE heads that I'd like some info on porting, a stock crank and rods, performer intake, pertronix billet distributor, new eddy waterpump and comp double roller timing set. I also have a cast 3.85 crank, possible 393? What cam and pistons would work good with what I have in mind? Carb? Thanks in advance I hope someone here can give me some ideas.