Will this cam work in a mostly stock 1983 351W?
#1
Will this cam work in a mostly stock 1983 351W?
Running stock heads.
Lunati BareBones Camshaft and Lifter Kits 10350101LK - Free Shipping on Orders Over $99 at Summit Racing
The part I'm concerned about is
Advertised Duration: 280 int./290 exh.
I'm not very knowledgable at all with cams yet, and I know you folks are. What reading I was able to do earlier mentioned to be careful with too much duration on a stock windsor because it could smash valves against the piston. Is there anything to that, and is this camshaft safe for that?
I'm not looking for the absolute best option out there. I'm looking for a more aggressive idle, a bit more power and a fun weekend project.
Lunati BareBones Camshaft and Lifter Kits 10350101LK - Free Shipping on Orders Over $99 at Summit Racing
The part I'm concerned about is
Advertised Duration: 280 int./290 exh.
I'm not very knowledgable at all with cams yet, and I know you folks are. What reading I was able to do earlier mentioned to be careful with too much duration on a stock windsor because it could smash valves against the piston. Is there anything to that, and is this camshaft safe for that?
I'm not looking for the absolute best option out there. I'm looking for a more aggressive idle, a bit more power and a fun weekend project.
#2
Yep....actually fairly stout...but should still work.
Actually....that advertised duration should be in the neighborhood of 204/214 @ .050 which is not that much....the lift is a little on the high side....112 lobe separation is good for vacuum....so...all in all ...pretty decent cam for a stock engine....I'd throw it in...line it up dot to dot....and just run it....(no worries about piston_& valve interference in stock configuration) IMHO....
That cam would also be good for future upgrades: (Carb ,intake, and headers.....)
Actually....that advertised duration should be in the neighborhood of 204/214 @ .050 which is not that much....the lift is a little on the high side....112 lobe separation is good for vacuum....so...all in all ...pretty decent cam for a stock engine....I'd throw it in...line it up dot to dot....and just run it....(no worries about piston_& valve interference in stock configuration) IMHO....
That cam would also be good for future upgrades: (Carb ,intake, and headers.....)
#4
Yeah...you got me on the valve springs....I think that cam will work with stock but goggle up Lunati and call their tech line to see for sure...
For timing chains....I like the street series Cloyes true rollers....keep in mind....there are two different kinds....and I don't know which you have
.(a one piece fuel pump cam or two piece) .....
For timing chains....I like the street series Cloyes true rollers....keep in mind....there are two different kinds....and I don't know which you have
.(a one piece fuel pump cam or two piece) .....
#7
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#10
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Running stock heads.
Lunati BareBones Camshaft and Lifter Kits 10350101LK - Free Shipping on Orders Over $99 at Summit Racing
The part I'm concerned about is
Advertised Duration: 280 int./290 exh.
I'm not very knowledgable at all with cams yet, and I know you folks are. What reading I was able to do earlier mentioned to be careful with too much duration on a stock windsor because it could smash valves against the piston. Is there anything to that, and is this camshaft safe for that?
I'm not looking for the absolute best option out there. I'm looking for a more aggressive idle, a bit more power and a fun weekend project.
Lunati BareBones Camshaft and Lifter Kits 10350101LK - Free Shipping on Orders Over $99 at Summit Racing
The part I'm concerned about is
Advertised Duration: 280 int./290 exh.
I'm not very knowledgable at all with cams yet, and I know you folks are. What reading I was able to do earlier mentioned to be careful with too much duration on a stock windsor because it could smash valves against the piston. Is there anything to that, and is this camshaft safe for that?
I'm not looking for the absolute best option out there. I'm looking for a more aggressive idle, a bit more power and a fun weekend project.
1/2" lift and 290 duration is certainly enough to smash valves into pistons, but even if it did clear this cam is gonna make power awful soft at anything below 2500rpm and considering the stock heads become a bottleneck at 4000rpm on this motor that doesn't leave you with much to play with.
If you want more hotrod noise then pick a cam with 110 LSA but keep total duration in the mid 260 deg range max and 0.050" durations somewhere around 200-210 deg max, this won't bleed of as much of the already low compression this motor has and make power from idle up. You want as much valve lift as you can get too but as long as it's in the 0.450" - 0.500" range you''ll get 90% or more of the potential airflow and not need radical valve springs(a little heavier than stock would be good) or have to worry about P-V clearance.
#11
IDK... Paul, It's certainly a lot of cam, but not that bad and Lunatti advertises it for stock applications.
Even Comps 4x4 cams start at 206/214 , so....?
Where can he find a cam with your specifications?
Edit: BTW: Just noticed he has a 250...so that's definitely too much cam....it's even stout for a 150 but would probably work...although be a little sluggish from idle , wouldn't take too long to make it up.
Even Comps 4x4 cams start at 206/214 , so....?
Where can he find a cam with your specifications?
Edit: BTW: Just noticed he has a 250...so that's definitely too much cam....it's even stout for a 150 but would probably work...although be a little sluggish from idle , wouldn't take too long to make it up.
#13
There's no doubt those cams fit the bill much better....(and I like Comp)...but
..just to nitpick a bit...the 35-234-3 has a 0.050 duration of 212/218....just a touch higher than your maximum....lol.
But I agree...and he can use his stock springs with those...and I prefer that one over the 35-235-3...but either one will work....
Thanks for setting us straight, he'll be much happier with either of those.
BTW; Yes Northern Auto is an online store. (At least they were six years ago...the last time a catalog....they could be out of business by now for all I know.)
..just to nitpick a bit...the 35-234-3 has a 0.050 duration of 212/218....just a touch higher than your maximum....lol.
But I agree...and he can use his stock springs with those...and I prefer that one over the 35-235-3...but either one will work....
Thanks for setting us straight, he'll be much happier with either of those.
BTW; Yes Northern Auto is an online store. (At least they were six years ago...the last time a catalog....they could be out of business by now for all I know.)
#15
Hard to believe either Lunatti or Summit would recommend a cam for "stock" engine that had a chance of PV issues....and while if this were an engine rebuild I'd recommend claying the pistons and degreeing the cam....I'm sure thousands of folks have done just what I said. Thankfully.....you stepped in...a second look at the link shows upgraded valve springs necessary...and I don't think he wants to do that in truck.
While we're talking about it...I'm sure he knows...but make sure to change the oil to a break in oil, use the proper break in oil, and follow the break in procedure to the letter...and of course use new lifters...(which by the way , do not have to be Comps.)
And Paul....he wants a lumpy idle....(He would have that for sure with that first cam..lol.)
While we're talking about it...I'm sure he knows...but make sure to change the oil to a break in oil, use the proper break in oil, and follow the break in procedure to the letter...and of course use new lifters...(which by the way , do not have to be Comps.)
And Paul....he wants a lumpy idle....(He would have that for sure with that first cam..lol.)