Well, I was going to title this thread "My model A will soon scream under new power" but Littleman already has that thread. Since the car was running so consistent, I decided to re-do the motor These two pictures were taken tonight, I should have my block by Saturday so I can start mock up to check piston to valve clearance.
Go get them Glen !!!............I just bolted in my short block last night myself...and should have the heads on and valves run thru sometime tonight..I hope not to bend ......no more freakin valves this year......Upgrades are alway's good !...Goodluck, Littleman
505 CI, eagle rotating assembly, 12.5 to 1, my brodix cylinder heads, a custom grind roller thats 262 and 271 at .050, 685/660 lift. I had to open my spring pockets to get a larger diameter valve spring installed, change the retainers and cups to match. Also changing carb bodies to a 1000 HP, its at pro systems right now getting tuned on a flow bench.
The GizzleHopper will be there. We will once again light her off at the motel on Friday night 9:00 pm sharp. I'm thinking the Scorpion V will be there too. Maybe we can do a two car light off and scare the hell outta that motel and stink it up some....
I've got an extra high nickel 454 block I was wanting to do the 496 trick to but hell I haven't even run the current configuration 454 that's in the truck. You think you can still keep it streetable with that cam and compression ?
Yes, a limited amount, but I only put 500 miles on it this past 10 months anyway with its "street" motor.
great news....my heads are back with the new monster valve springs, TI retainers and the valves clear the pistons with plenty of room. I spoke with SRP and they said I could fly cut the dome up to .200 to reduce the compression. Right now it is at 13.1 to 1.....I want to get it down to 12 or 12.5 The cam is supposed to be .683 lift but it shows .704 on the indicator??
finally got my rotating assembly back from the machine shop for balancing. I have already degree'd the cam, and checked for TDC on the balancer so at this point its just bolting together. My carb is back from Patrick at Pro Systems its now a 1000 HP and has a bunch of good stuff inside, flowbench'd for my motor so it will be close out of the box.
Now that's a dome ! You'll have to put some video up when you get it running. <img src=http://www.jalopyjournal.com/forum/attachment.php?attachmentid=720859&d=1249016850>
Actually we removed quite a bit to reduce the compression from 13.1-1 to 12-1, the picture below is how they started.
OHHHH, neato! My truck is on the dyno right now. Did a cam swap for more lift and less overlap to help build boost quicker and pick up some efficiency. I got the efficiency thing down but lost some power and my HP and TQ curves moved up a G in the RPM range. Looking into the solution right now, I think I know what to do, just need a few more brains on the subject..
So how do you determine where to remove the material, to not create a "hot spot" on the piston surface ?
I called SRP and asked them. They stated I could remove up to .200 straight off the top of the dome with no issues. take a look at the pics again and you can see how the flat of the dome increased in size as it came straight down..... I calculated the weight vs. CC and determined I could remove X amount of grams off the dome to reduce Y amount of CC. THey were 43 CC's domes. Its my first solid roller....I cant believe the spring pressure involved, they are 660lbs on the nose. Steve, that's awesome.....Why not move that torque up so it doesnt blow the tires off.
Ya, Patrick is awesome. The customer service is unbeatable for those of us that are not pro-tuners. I have ran it in a smaller CFM on my 396, he replaced the main body to make it a 1000 CFM, then tuned it.
http://www.theturboforums.com/smf/index.php?topic=130478.msg1284891#new If you want to follow along with our deductions. It sounds as if the cam is just wrong for my set up. I could mask it with the smaller AR housings, but you would be correct about blowing the tires off.
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