Is my set up good enough for 400whp?
Yeah, that's a big cam but with 383 inches it's doable. Definitely needs more compression but cubic inches will tame it. It'll likely still want to spin into the higher 6000 range and really it needs the heads and intake ported. I personally wouldn't use that cam without a set of heads that moves plenty of volume.
Last edited by StealthFormula; Sep 19, 2019 at 07:39 AM.
Agreed, it's not a good DD choice IMO but if we're not careful we'll open that can of worms discussion on what's daily drivable and what a street car is, etc, etc. Could be daily it? Yup, probably can if he gets the rest of the combo dialed in and has a really good tune put in it and doesn't mind tolerating some of the big cam antics.. Is it a friendly daily?? Probably not, lol. I've daily driven mine with 350 inches and not quite as much cam and don't mind it a bit, for me I find some of it's antics charming in its own way but I wouldn't take a 500 mile trip in my car either.
So this is the XFI 292 cam? It's the same one I'm running in my 396 with 11:1 CR. With the correct compression ratio and gearing it would be fine as a daily. With my LPE heads it's making 440rwhp. I do run the same 4.56 gears as I did with the solid roller, but I could see this running just fine with a 4.30 gear ratio.
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I missed something, I see an advertised duration but more interested in duration @ .050 Definitely needs more compression. You're not going to get compression by throwing a 50 shot at it. You'll get increased cylinder pressure but not compression in the general way that we tend to reference compression. You can get compression by milling the heads, a thinner head gasket, bigger bored and thinner head gaskets. First you need to determine how far in the hole the piston is at TDC, then you can get a general idea of the head gasket thickness you can get by with.
If the piston is .005 in the hole you can go a little thinner with the gasket. These are just general ideas, I would suggest speaking with Lloyd possibly about how much can be taken off of those heads safely. I beleif the rule of thumb on an LT1 is you're good to about .030 on a stock deck block before you begin to run into bolt alignment issues with the intake. You have to consider all of these variables but I agree that more compression is I biggie. Especially if there's a lot of valve overlap with the cam.
If the piston is .005 in the hole you can go a little thinner with the gasket. These are just general ideas, I would suggest speaking with Lloyd possibly about how much can be taken off of those heads safely. I beleif the rule of thumb on an LT1 is you're good to about .030 on a stock deck block before you begin to run into bolt alignment issues with the intake. You have to consider all of these variables but I agree that more compression is I biggie. Especially if there's a lot of valve overlap with the cam.
Agreed, it's not a good DD choice IMO but if we're not careful we'll open that can of worms discussion on what's daily drivable and what a street car is, etc, etc. Could be daily it? Yup, probably can if he gets the rest of the combo dialed in and has a really good tune put in it and doesn't mind tolerating some of the big cam antics.. Is it a friendly daily?? Probably not, lol. I've daily driven mine with 350 inches and not quite as much cam and don't mind it a bit, for me I find some of it's antics charming in its own way but I wouldn't take a 500 mile trip in my car either.
You're just more bad *** than me. I know you DD an Avalanche or the like so don't act like you drive that **** every day lol. You know a thang or two and have a proper combo, hopefully OP will follow that direction.
I dd a bike more than anything else when it's nice. I'm just saying a big cam is doable with a stroker. Here's a vid when I had a 248/250 SR cam with .650/.610 lift with 3.73 gears and stock sized tires just before installing 4.56's for the track using a 27" tire:
I was in 5th gear for this.
I dd a bike more than anything else when it's nice. I'm just saying a big cam is doable with a stroker. Here's a vid when I had a 248/250 SR cam with .650/.610 lift with 3.73 gears and stock sized tires just before installing 4.56's for the track using a 27" tire:
https://www.youtube.com/watch?v=8Z84KlQXtNM
I was in 5th gear for this.
https://www.youtube.com/watch?v=8Z84KlQXtNM
I was in 5th gear for this.
Yeah I keep thinking this setup is for both track and street. If it's just for street w/ a few track outings every once in awhile I also agree with a better cam. Especially if wanting to stay with a tall gear.
And yeah, the smelly thing... Sig check.
Had a couple of metrosexuals pass by my car while it was idling in a parking lot. Male bitch- "It's so loud." Female bitch- "And it smells."
And yeah, the smelly thing... Sig check.
Had a couple of metrosexuals pass by my car while it was idling in a parking lot. Male bitch- "It's so loud." Female bitch- "And it smells."
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Yeah I keep thinking this setup is for both track and street. If it's just for street w/ a few track outings every once in awhile I also agree with a better cam. Especially if wanting to stay with a tall gear.
And yeah, the smelly thing... Sig check.
Had a couple of metrosexuals pass by my car while it was idling in a parking lot. Male bitch- "It's so loud." Female bitch- "And it smells."
And yeah, the smelly thing... Sig check.
Had a couple of metrosexuals pass by my car while it was idling in a parking lot. Male bitch- "It's so loud." Female bitch- "And it smells."
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Agreed, it's not a good DD choice IMO but if we're not careful we'll open that can of worms discussion on what's daily drivable and what a street car is, etc, etc. Could be daily it? Yup, probably can if he gets the rest of the combo dialed in and has a really good tune put in it and doesn't mind tolerating some of the big cam antics.. Is it a friendly daily?? Probably not, lol. I've daily driven mine with 350 inches and not quite as much cam and don't mind it a bit, for me I find some of it's antics charming in its own way but I wouldn't take a 500 mile trip in my car either.
OK.....cool.
Still need more compression or less cam, though. And a properly spec'ed torque converter for THAT cam will rob you of HP on the dyno.
Which is why chasing numbers is not the way to build a set-up.
Best of luck!
KW
Still need more compression or less cam, though. And a properly spec'ed torque converter for THAT cam will rob you of HP on the dyno.
Which is why chasing numbers is not the way to build a set-up.
Best of luck!
KW
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Thanks and I have a t56 transmission no converter needed