my older engine builder buddy used GK cams. when you talk about cams to him harold B name would pop up . i do not know if harold in is very early days if he work at GK ? i think he did work for comp in the early 80s ?
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Just wondering one thing. Speed Pro piston is designed for connecting rods that are 6.480.
Are they not 6.490? Maybe it doesnt matter?
Johan
When you are sitting down to engineer all the parts that will make your motor work like you want it to, you determine the static compression ratio and squish you want to use in the motor, then purchase parts to reach those specifications.
Let's say for instance, that you wanted to achieve a squish of 0.040". OK, we know the block deck height is ~10.170", so we have to put together a stack of parts and adjust the block deck height to achieve a zero deck to do this. The thickness of the gasket then becomes the squish figure. So, with a stack of parts like this.....stroke radius 1.890", rod length nominally 6.490" (can vary from 6.486" to 6.490" in production rods) and piston compression height of 1.776", we would add all the stack pieces together and find that we have a stack of 10.156" So, in order to achieve a zero deck, we would have to shave the block decks 0.014". If the rods were actually 6.480", then the stack would be 10.146" and you'd have to cut the block decks 0.024" to achieve a zero deck.
I know this forum is older than dirt...but I am another newb building a 390...just wondering why that C8AX-6250-C cam was never mentioned
Hey there Jeff, I am new to this forum and your build is almost identical to mine. I too have a C6ME-A block with the same rods and a 2U crank that came out of a 67 Ranchero. The block will also find a home in a 67 Mustang coupe. I was uncertain about going the stroker route and found your post. I was wondering how you made out with the build, especially the FE and how it is running. Cheers!
Welcome to the forum! You need to take a look at the date on the thread before responding to it, if you expect any reply. Jeff posted this back in 2009, and unfortunately he has not been back in over two years according to his profile. Now that said, he may possibly get an e-mail telling him that one of his threads has a hit, if he signed up for notification. It's happened before....
We'd love to see & hear more about that Mustang!
After re-factoring the flow of the Edelbrock heads, based on Barry's experience with hard dyno pulls with these motors, I ran a Sim on this cam. Best results were achieved with the cam retarded 4 degrees on these 0.050" marks....
IO (-5)
IC (45)
EO (52
EC (-2)
RPM....HP....TQ
2000...166...436
2500...208...436
3000...263...460
3500...330...495
4000...397...521
4500...447...521
5000...492...517
5500...505...482
6000...485...425
Peak volumetric efficiency 101.8% @5000
Peak BMEP 198.8 lbs @4500
I'm new to this forum but not to Fords or the mighty FE engine. I have a 1969 Ford LTD 427 Cobra clone. It still has its 390 though its dressed up as a 427. I don't have all the specific details as I had the work done at local speed shop. It has a high lift cam,aluminum intake,700 cfm carb.,head work,electronic billet distributor,long tube headers and dynoed at 451hp. The secret to 390 is torque as its no high revving engine,get a nice gear 3:89 or 4:11,posi unit,stall 2000-2500,shift kit,sticky tires and spank some Chevy butt. I beat a ton of cars with more hp than me. I get them out the hole and they never catch me!!! I run 2200 stall and 275/60/15 Cooper Cobra's. Good luck but you won't need it!!!
While it's great that you replied.. the last post was almost a year ago! And you're right, the FE's were torque motors.
Great thread !!
Dang = That's Purty! Welcome to the club..
Funny how the world works....I've spent the past two weeks revisiting this build. The bottom end is going together at the shop and I literally, just last night, drilled the lowering holes and installed the upper control arms.
I got distracted by building a couple of businesses and a career. Believe it or not this one isn't as dead as one might think.
I'll post a few pics at some point today, at least of the suspension. The engine assembly is being documented fairly thoroughly by the shop I engaged to do that and we'll have actual dyno numbers to look at.
Again, how strange the world can be...
Cheers
Jeff
Hi Ya Jeff. Yep, sometimes we are the last to know what's coming next right??
Can't wait to see the pics.. been so long I've forgotten what the motor was going into.
A Mustang perhaps?
Loading pics from a phone is obviously a pain....I'll need to transfer to a computer and figure it out from there....gimme a minute...
And yes, the car is a Mustang. 1967 Coupe.