thatsupnow
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Hey guys I'm looking for a little input on the 292XFI HR cam, does anybody have any real world experiences with this cam?? Did you like it? Did you hate it? I'd like to hear your opinions I'm planning on going with this cam for next summer.
It's going in my current motor: 355 10.6:1 CR, Trickflow 56cc/175cc heads, Holley stealth ram, 36# injectors, 58mm TB, GM cam 222/230 .509/.528 lift, controlled with a holley HP EFI system. I'm planning on installing some 64cc/195cc blueprint heads(got them new for $600) when I put in the new cam.
Anybody have any idea as to what kind of power this little guy would be making in its current trim?? Thanks for your time guys have fun
It's going in my current motor: 355 10.6:1 CR, Trickflow 56cc/175cc heads, Holley stealth ram, 36# injectors, 58mm TB, GM cam 222/230 .509/.528 lift, controlled with a holley HP EFI system. I'm planning on installing some 64cc/195cc blueprint heads(got them new for $600) when I put in the new cam.
Anybody have any idea as to what kind of power this little guy would be making in its current trim?? Thanks for your time guys have fun
I have tuned the 280xfi in a 360" L98 with stealth ram. Thats about as big a cam as i'd go in a 350 base motor.
The 292 is not small. Its going to rev to 7000 rpm. It ideally should use 200-210cc heads imo as the 6000-7000 rpm range will be much better suited to larger heads where that cam will turn.
You can get it to idle well since its a aggressive lobe cam with shorter seat duration than some old school grinds. Its gonna be choppy tho. The 280 cam is choppy in a 355.
To get the 292 to work you will need a lot of stall speed to 60' at the track. You can drive any cam on mild converters but when you floor it the trq curve doesnt start to smile until 4500-5000 with that cam. I'd go minimum 4000 stall for a car that wants to et well
The 292 is not small. Its going to rev to 7000 rpm. It ideally should use 200-210cc heads imo as the 6000-7000 rpm range will be much better suited to larger heads where that cam will turn.
You can get it to idle well since its a aggressive lobe cam with shorter seat duration than some old school grinds. Its gonna be choppy tho. The 280 cam is choppy in a 355.
To get the 292 to work you will need a lot of stall speed to 60' at the track. You can drive any cam on mild converters but when you floor it the trq curve doesnt start to smile until 4500-5000 with that cam. I'd go minimum 4000 stall for a car that wants to et well
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you could do it with 195 heads, but you're going to be losing compression already with the bigger combustion chamber and the 113 LSA is going to keep your dynamic compression down as well. with that cam on a 355 you would likely be wanting closer to 11:1 static compression. so that cam and heads on a 355 will be a bit of a mis match IMO.
Agreed.
Your heads are too small for that big of a cam
Your heads are too small for that big of a cam
<<<@!1!@>>>
The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?
The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?
thatsupnow
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Quote:
The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?
That sounds nice man!! Yeah I'm only really poking around with that cam, just brain storming. Irange.a good deal on some new heads, but before they go on I'm gonna have them flat milled to bring the chambers down to around 58cc to keep compression up and I can just use a thinner gasket to make up some more.Originally Posted by Tibo
<<<@!1!@>>>The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?
The cam I'm using now pulls hard up to 6500 and I never had a problem with it it's just time for something new. I have been scoping a couple other cams with a 110-112 LSA from comp and Howard's cams in the 236-246* range.
Either way I'm excited to be parts shopping like a kid in a candy store!! Haha
Get a hold of DynoDon as I believe that video was from his shop, he knows several members running 350s with that cam or cams slightly bigger making good power.
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Ghettobird52
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Mar 7, 2020
Quote:
The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?
I wonder what would of happened if a fly got sucked up into your TB LOL!Originally Posted by Tibo
<<<@!1!@>>>The 280XFI is a 230/236 cam and the 292XFI is a 242/248, which is way bigger, almost 2.5 steps bigger. The 280XFI on a 350 will make peak power at or above 6,000 RPM. The 292XFI is going to peak much higher, for sure above 6,500 making your shift point at least 7K. I ran the 280XFI in my 383 and it will pull into 6K. If you are actually wanting to spin that high you are better off looking into a solid roller. If you have good exhaust and you can tune reasonably well look into some of the single pattern cams ground on tighter LSAs. Keep your current heads and you wouldn't even need to go bigger than 220 duration. But in the end what are you more interested in having a high horsepower number, or a faster 60' / 1/8 mile to make street driving more fun?