445 build
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Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
It was a good day and I hope they do it again. There was a lot of interesting cars there that you just don't see everyday where we live.
If there's only $300 separating you from a stroker kit the I too would just do that. I seem to have my best luck getting a hold of Nancy in the second half of the week around mid day. Or sometimes beginning of the week in the morning the other guy that builds engines with Barry answers in the morning when he's not doing anything before anyone else comes in. Either way it's a pain but it will be worth it. I'm pretty sure the questions you have besides the cam are something we could almost answer here. Who knows maybe even pick the cam. Heck I don't even know of my cam was the best choice but we'll see. Idi were you I'd just order online and get the process started.
If there's only $300 separating you from a stroker kit the I too would just do that. I seem to have my best luck getting a hold of Nancy in the second half of the week around mid day. Or sometimes beginning of the week in the morning the other guy that builds engines with Barry answers in the morning when he's not doing anything before anyone else comes in. Either way it's a pain but it will be worth it. I'm pretty sure the questions you have besides the cam are something we could almost answer here. Who knows maybe even pick the cam. Heck I don't even know of my cam was the best choice but we'll see. Idi were you I'd just order online and get the process started.
Laughing Gas
Joined: May 2007
Posts: 960
Likes: 10
From: Victoria (North Saanich)
Ok, so here is the starting point -
I'll be looking for some guidance from the vendor, assuming they have built more than a few of these.
- My block will be bored to 4.07, the deck will be machined to 10.175 (I know this is taller than the stock specification, but the block measured 10.177 at its lowest point and it had some surface rust so 10.175 is the expected height)
- Based on the deck, bore, stroke at 4.25, 6.7 rods, and the combustion chamber at 76cc (the volume on his site), what piston would make a 10.5 CR?
- I'm assuming the standard height for the piston would be 1.33, but I took that from the Diamond site. Survival doesn't provide any piston specs.
- Is there a reason I shouldn't go with the limited travel hydraulic roller lifters (the price is $40 more than the normal travel lifters)?
- What is the practical RPM limit on a 4.25 stroke (notwithstanding limits on cam, lifters, and valve train)? Eagle has an article that suggests that piston speed of 140 feet per minute is the limit, and one of the on line calculators suggests a 70 feet per minutes speed for a 4.25 stroke at 6,000 rpm. Seems a non issue, but I'm curious.
- Given that we are going with Felony heads, the stroker kit, and a new rocker assembly, what is the strongest cam for that setup.
I'll be looking for some guidance from the vendor, assuming they have built more than a few of these.
Thread Starter
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Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
Sorry I kinda forgot about answering anything in here. That other thread had me concerned about my rings. I got a answer on that today from Barry so I will continue on. I'll have to read your questions this even when I get back from the hospital.
Logistics Pro
Joined: May 2008
Posts: 3,670
Likes: 370
From: PHX AZ
Ok, so here is the starting point -
I'll be looking for some guidance from the vendor, assuming they have built more than a few of these.
- My block will be bored to 4.07, the deck will be machined to 10.175 (I know this is taller than the stock specification, but the block measured 10.177 at its lowest point and it had some surface rust so 10.175 is the expected height)
- Based on the deck, bore, stroke at 4.25, 6.7 rods, and the combustion chamber at 76cc (the volume on his site), what piston would make a 10.5 CR?
- I'm assuming the standard height for the piston would be 1.33, but I took that from the Diamond site. Survival doesn't provide any piston specs.
- Is there a reason I shouldn't go with the limited travel hydraulic roller lifters (the price is $40 more than the normal travel lifters)?
- What is the practical RPM limit on a 4.25 stroke (notwithstanding limits on cam, lifters, and valve train)? Eagle has an article that suggests that piston speed of 140 feet per minute is the limit, and one of the on line calculators suggests a 70 feet per minutes speed for a 4.25 stroke at 6,000 rpm. Seems a non issue, but I'm curious.
- Given that we are going with Felony heads, the stroker kit, and a new rocker assembly, what is the strongest cam for that setup.
I'll be looking for some guidance from the vendor, assuming they have built more than a few of these.
I think max power around 6000-6200 would be plenty high to spin it.
But being your truck is a bit heavier keeping the power band a bit lower to say 5500 rpm peak hp where it would buzz to 6000 no problem would be my opinion.
I would go with a hydraulic roller cam if $$ avail
Barry has done enough to know which one would work best for your combo.
What octane fuel do you have up there?
I answered more in my thread as did not know what the OP would think here.
Laughing Gas
Joined: May 2007
Posts: 960
Likes: 10
From: Victoria (North Saanich)
Boss9F100,
I am going with a hydraulic roller cam and I think roller rockers as well (I see you used OEM rockers on yours and was thinking about staying with them). I was thinking about peaking mid to high 5,000s and, as you say, spinning to 6,000. Before I yanked it the 410 was flat dead at 5,000, my rear wheel dyno results have been posted a few times, healthy torque but no HP.
We have 91 at pretty much all stations, some carry 93.
I am going with a hydraulic roller cam and I think roller rockers as well (I see you used OEM rockers on yours and was thinking about staying with them). I was thinking about peaking mid to high 5,000s and, as you say, spinning to 6,000. Before I yanked it the 410 was flat dead at 5,000, my rear wheel dyno results have been posted a few times, healthy torque but no HP.
We have 91 at pretty much all stations, some carry 93.
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Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
Yea the rings I could deal with but my Dad is still very sick and fighting something unknown.
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Laughing Gas
Joined: May 2007
Posts: 960
Likes: 10
From: Victoria (North Saanich)
Sorry about your dad. We had mine measured for a pine box when he was 90. We wouldn't have given a dollar for his chances to see his 91st (December 28). Started getting sick in September, watched him fade in front of our eyes. Just before Christmas he started feeling a little better, joined us for the big feast, and at 95 he is over in Victoria for a little holiday with our mother.
Best of luck to him and your family.
Best of luck to him and your family.
Laughing Gas
Joined: May 2007
Posts: 960
Likes: 10
From: Victoria (North Saanich)
Should be fun.
Elder User
Joined: Jan 2012
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From: AL
I don't think you'll be disappointed.
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Cargo Master
Joined: Jul 2010
Posts: 2,099
Likes: 8
From: York, Pa
Barry recommended the Quickfuel 780 for mine. He said it's more bang for the buck basically over the Holley. I haven't gotten much of a chance to look at them yet.