Hey I'm new to your channel and I really enjoy it. Keep up the good work. Lookin forward to more on your Vicky truck. I have a 65 F-100 that I want to get stated on. Have a good day.
after your dyno session and what has been said in my comments about needing a 230° at .050 cam to make 500hp. Do you now see that advertised duration can be misleading? i just hope you learned that is all. the number at .050 is the most reliable.
I definitely agree this combo needs more camshaft to make 500. But to say it needs 230 @.050 is over simplified IMO. What if it had a roller cam with 218-220 @ .050 and more lift and more aggressive lobes? Waaay more to a cam than duration
@cprgarage3206 Duration is the biggest factor, though, and my comment was about your engine with a flat tappet, so there is that. Anyway here's what I know, but I dont know how to write what I've learned over the last 8 years from dyno testing my engies and from other engine builders in a short paragraph, so i apologize for the novel. But yeah, you're right. There is more to cams than just duration, but duration is the biggest factor by far. I think faecebook Groups, forums, and some salesmen have made it seem more complicated than it is, but more on that later. yes, the lobe design on a roller vs. a flat tappet should have a power advantage, and the same for adding more lift, but how much power is parts combination specific. I.E. the heads and intake. Also, the demand being put on the engine is an even bigger factor. which is determined by the rpm the engine is running at, which is determined by cam duration. that's why duration is the biggest factor. looking at your combination, 3-5 more degrees, and a little more aggressive lobe (worth maybe 15hp) probably won't get to 500 hp. A 224° cam might do it, though. but again, my comment was about your engine with a flat tappet. I built a 475 cubic inch engine (the extra cubes are worth roughly 10hp over yours) with a 219° at .050 cam, edelbrock heads, and 9.0:1 cr. it made 482 hp. Flow testing the edelbrock heads showed they are not that great. possibly with some goods head like AFR, trickflow, or kasse could have possibly made 500 hp. Now, if you look at your combo, yeah, the lobe design of a roller might give you another 15 horse, and 3 more degrees of cam duration is nothing really. to me, it looks like the heads are the biggest thing holding your engine back, well, and maybe that dyno you used, lol. there's just so many test that show up need 230° regardless of lobe design to make 500, horse. I'm not sure what you know, so I'm just going to ask. do you know that the cam duration dictates at what rpm range power is made? the lift can add to that. how much power is gained from that is really combo specific, and how much lift you are increasing by also determines that, of course.
I like the old saying, "Horsepower sells cars, Torque wins races".
Hey I'm new to your channel and I really enjoy it. Keep up the good work. Lookin forward to more on your Vicky truck. I have a 65 F-100 that I want to get stated on. Have a good day.
Nice work
Thanks
I got a 1979 I’m fixing to shorten
zooom!
tin foil, thats a good idea.
after your dyno session and what has been said in my comments about needing a 230° at .050 cam to make 500hp. Do you now see that advertised duration can be misleading? i just hope you learned that is all. the number at .050 is the most reliable.
I definitely agree this combo needs more camshaft to make 500. But to say it needs 230 @.050 is over simplified IMO. What if it had a roller cam with 218-220 @ .050 and more lift and more aggressive lobes? Waaay more to a cam than duration
@cprgarage3206 Duration is the biggest factor, though, and my comment was about your engine with a flat tappet, so there is that. Anyway here's what I know, but I dont know how to write what I've learned over the last 8 years from dyno testing my engies and from other engine builders in a short paragraph, so i apologize for the novel. But yeah, you're right. There is more to cams than just duration, but duration is the biggest factor by far. I think faecebook Groups, forums, and some salesmen have made it seem more complicated than it is, but more on that later.
yes, the lobe design on a roller vs. a flat tappet should have a power advantage, and the same for adding more lift, but how much power is parts combination specific. I.E. the heads and intake. Also, the demand being put on the engine is an even bigger factor. which is determined by the rpm the engine is running at, which is determined by cam duration. that's why duration is the biggest factor. looking at your combination, 3-5 more degrees, and a little more aggressive lobe (worth maybe 15hp) probably won't get to 500 hp. A 224° cam might do it, though. but again, my comment was about your engine with a flat tappet.
I built a 475 cubic inch engine (the extra cubes are worth roughly 10hp over yours) with a 219° at .050 cam, edelbrock heads, and 9.0:1 cr. it made 482 hp. Flow testing the edelbrock heads showed they are not that great. possibly with some goods head like AFR, trickflow, or kasse could have possibly made 500 hp. Now, if you look at your combo, yeah, the lobe design of a roller might give you another 15 horse, and 3 more degrees of cam duration is nothing really. to me, it looks like the heads are the biggest thing holding your engine back, well, and maybe that dyno you used, lol. there's just so many test that show up need 230° regardless of lobe design to make 500, horse.
I'm not sure what you know, so I'm just going to ask. do you know that the cam duration dictates at what rpm range power is made? the lift can add to that. how much power is gained from that is really combo specific, and how much lift you are increasing by also determines that, of course.