Anyone interested in a 500" stroker build thread?
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451Mopar
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How about a preview of the build specs.
440 block .030 over
ARP Main studs
440 source 500" stroker crank, rods, and pistons
Edelbrock RPM Performer aluminum 84cc cylinder heads
Cam is 244 @ .050 with a .539" lift on both intake and exhaust. K62 Engle grind.
Harland Sharp roller rockers
Intake is Mopar's copied version of the Edelbrock RPM Performer intake
850 CFM Quick Fuel Mechanical secondary double pump unit.
Should be around 10.75:1 compression and should run pretty healthy. This rotating assembly was already in another super low mileage motor (7,500 mi.) I had that scored the cylinder walls so I have a new block being punched .030" over and align honed and deck checked. I cannot find anything in the pan or anything really crazy wrong with the motor, so I am going to just do it right the way I know how when I reassemble it with the new block. All the machining goodies being done at a local race shop. I figured I would upgrade the rockers and some other pieces while putting it all back together. Should run like a monster with the 4 speed and 3.91 gears!!!
BSB67
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What pistons are you using to get that compression ratio? Is there a dish?440 block .030 over
ARP Main studs
440 source 500" stroker crank, rods, and pistons
Edelbrock RPM Performer aluminum 84cc cylinder heads
Cam is 244 @ .050 with a .539" lift on both intake and exhaust. K62 Engle grind.
Harland Sharp roller rockers
Intake is Mopar's copied version of the Edelbrock RPM Performer intake
850 CFM Quick Fuel Mechanical secondary double pump unit.
Should be around 10.75:1 compression and should run pretty healthy. This rotating assembly was already in another super low mileage motor (7,500 mi.) I had that scored the cylinder walls so I have a new block being punched .030" over and align honed and deck checked. I cannot find anything in the pan or anything really crazy wrong with the motor, so I am going to just do it right the way I know how when I reassemble it with the new block. All the machining goodies being done at a local race shop. I figured I would upgrade the rockers and some other pieces while putting it all back together. Should run like a monster with the 4 speed and 3.91 gears!!!
Challenger340
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Right out of the gate and seeing the 4 spd W/3.91's, may I suggest filing an Thrust Bearing Oiling feed ? so every time that Clutch tries to push the Crank out the front of the Block it has some Oil there ? And of course depending upon year of the Block, using the late Blocks larger thrust surface Bearings.
Nice tried and proven combo, that with any headwork at all may surprise you.
Nice tried and proven combo, that with any headwork at all may surprise you.
No dish, just the standard valve fly cuts. The pistons are not the newer ones that they offer. Those are .018 in the hole. These are the older ROSS pistons that are about .027 in the hole. Everything I calc'd with the gasket and all that puts me at 10.75-10.8:1 with 84cc chambered heads. I figure if they clean up the deck surface which is pretty flat and take a few thou off, that'll get me right around that mark.
Please explain....
BSB67
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So your piston to head clearance will be about 0.060 - 0.065" ?
Should be about .055 to .060 yes depending on what hey take to clean the surfaces up. Unfortunately, the heads are already on the previous engine. If I zero deck the engine my compression will be about 11.4:1. I am working with parts I already have. I wish my buddy got the 88cc heads vs the 84cc, but it is what it is at this point.
I know the perfect head quench is .035-.040, but it is what I have to work with. If I was looking for every horsepower, I would be worried but I just cruise the car. Honestly, if the rotating assembly was junk when it screwed the cylinder walls up, I was going to build a mild 440 for it but I can't toss a $2,500 rotating assembly out the window so I figured I would reuse the good stuff and make it work. It was a really strong motor when it was in the car before with a tiny cam, so with this cam it aughta run even better and be way more than I need in the first place.
Paul_G
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I am building a similar engine to yours right now. Using the 440 Source 440-512 stroker kit. I have the block back from the machine shop, stroker kit installed at the shop. I plan on using 78cc TF PP240 heads, Eddy dual plane intake, 850 vacuum sec carb. My CR should fall right in the 10.5 range, as per 440 source and the machinist calculations. I had Dwayne Porter spec out a hyd roller cam for me. It's not purchased yet but will be around 234/238 @ .050 split duration with .542/.539 lift on a 113 LSA. Roller rocker valve train, not purchased yet either.
I am building a street engine, it has A/C and an amp in the trunk for tunes I can hear over the music of the exhaust. I expect to be in the mid 500 range on HP and closer to 600 TQ. I hope.
So far all I have done is get the short block back on the engine stand in my garage and wrapped up like a Christmas present for for me to finish.
I am building a street engine, it has A/C and an amp in the trunk for tunes I can hear over the music of the exhaust. I expect to be in the mid 500 range on HP and closer to 600 TQ. I hope.
So far all I have done is get the short block back on the engine stand in my garage and wrapped up like a Christmas present for for me to finish.
BSB67 you coming up with a different compression idea based off of that? I am all ears for your thoughts.
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Yes.
wagonman
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Yes Please. Just got my 400-470 block back and am ready to start putting it together. Might wait to see how you are going to do yours as far as sequence. Like crank first, ring fit first ect. My machinist was impressed with the Source stroker kit, Source heads not so much.
'68 Coronet R/T
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Are you guys planning to run zero deck and closed chamber heads to get a "quench" effect?
Did this on my last build to run on pump gas premium grade.
Ended up about 11:1 compression but I am at 4400' above sea level.
Used the stock crank, .040" over TRW flat top pistons, 915 heads with oversized valves and hardened seats installed, Mopar 284/484 camshaft. Went with Edlebrock dual plane intake and Hedman 78036 headers through Thrush Turbo mufflers and a 2 1/2" exhaust system. A Holley 870 carb and MSD 6AL ignition system.
Motor ran real good but I suck at tuning. Thinking EFI for my current project.
Did this on my last build to run on pump gas premium grade.
Ended up about 11:1 compression but I am at 4400' above sea level.
Used the stock crank, .040" over TRW flat top pistons, 915 heads with oversized valves and hardened seats installed, Mopar 284/484 camshaft. Went with Edlebrock dual plane intake and Hedman 78036 headers through Thrush Turbo mufflers and a 2 1/2" exhaust system. A Holley 870 carb and MSD 6AL ignition system.
Motor ran real good but I suck at tuning. Thinking EFI for my current project.
BSB67
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Nope. Didn't do the math, but that all sounds correct.
tx67fury
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My 505 build is:
68 440 block .30 over; been through machine shop where they did the works to it
440 Source 505 with ultralite crank; aluminum mains with ARP studs
Cam from Straub Technologies custom grind: 238 at .05" and .552/.510
Edelbrock RPM Inake (will eventually have Holley Sniper EFI; but haven't purchased yet)
Trick Flow 240 heads with 1.6 Harland Sharp rockers
TTI 1 7/8 ceramic coated headers into 3" exhaust
TF 727 with shift kit going into a 3.23
68 440 block .30 over; been through machine shop where they did the works to it
440 Source 505 with ultralite crank; aluminum mains with ARP studs
Cam from Straub Technologies custom grind: 238 at .05" and .552/.510
Edelbrock RPM Inake (will eventually have Holley Sniper EFI; but haven't purchased yet)
Trick Flow 240 heads with 1.6 Harland Sharp rockers
TTI 1 7/8 ceramic coated headers into 3" exhaust
TF 727 with shift kit going into a 3.23
Hemirunner
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I’m assuming he recommended that cam due to the CR/intake/gearing choices. That should be a great street driver.
tx67fury
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Yessir, I’m running PB, PS, and A/C so unfortunately I had to leave some on the table as far as cam. But...it’ll still make the 4400 go!
451Mopar
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I'd like to hear more on that build too. Very close to what we are doing for Dans '66 Fury.
505 with the 440 source light weight crank, the 27cc dish pistons, zero deck, 0.040" gasket should be right at 10.0:1 compression with the 78cc Trick Flow 240s. 1.6 HS rockers, and Lunati 40230732LK cam. That is a small solid roller, 243/[email protected]", 0.617"/0.624" lift (with 1.6 ratio rockers.) Using stock main caps with ARP studs. Haven't decided on intake, headers, or oil pan yet.
Just dropped block off at machine shop Monday. When we get the block back, we plan to trial fit a few different oil pans and see how they clear the chassis and suspension.
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