Cam recommendations 351W
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
This is to try to maintain emissions compliance. I'm thinking of using the TFS stage 1 cam, TFS-51403001 (.499/.510 w/1.6, 221/225 @.05, 112 LSA), and tuning my A9L EEC with the Moates QH to handle this. I have some Cobra 1.7 rockers, so can bump the valve lift by about 6%.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 208
From: SoCal
I would like to get the maximum power from something that will still pass smog. So if the TFS stage doesn't do it, would you know what would be a better choice?
When you say "too much low lift duration", does this mean the lobes are really wide in the low lift areas? I guess it's hard to discern that from just the total and .05 durations.
When you say "too much low lift duration", does this mean the lobes are really wide in the low lift areas? I guess it's hard to discern that from just the total and .05 durations.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
That off the shelf cam is terrible IMO, it will totally strangle this motor.
Do you still have the stock roller cam? For reference this is what it looks like.
256/266 adv duration
198/208 @ 0.050" lift(not confirmed but a good guess)
0.422/0448" lift with 1.6 rockers
116 LSA.
This cam works great with a carb and with 1.7 rockers it's about as good as it gets for torque output, powerband is 0-4500rpm
Do you still have the stock roller cam? For reference this is what it looks like.
256/266 adv duration
198/208 @ 0.050" lift(not confirmed but a good guess)
0.422/0448" lift with 1.6 rockers
116 LSA.
This cam works great with a carb and with 1.7 rockers it's about as good as it gets for torque output, powerband is 0-4500rpm
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Yea, if you want an emissions friendly cam, I'd opt for either the F4TE or the Cobra cam though to have the best chance of passing emissions. The HO makes more power though, the extra cubes would tame it somewhat, might be enough for emissions.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 208
From: SoCal
The HO makes more power than the Cobra cam, even though it has less lift and duration? How does that work?
According to Ford's specs, the 1993 HO engine made 205HP, while the Cobra made 230HP. I think I would want the Cobra cam, or something like it, for more power.
According to Ford's specs, the 1993 HO engine made 205HP, while the Cobra made 230HP. I think I would want the Cobra cam, or something like it, for more power.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
The Cobra had GT40 heads. This info came straight from Ford's HO 5.0 tech manual. They were going to use the HO cam in the Cobra motor, but decided to engineer the Cobra cam to get a cleaner idle.
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Lead Driver
Joined: Apr 2008
Posts: 6,941
Likes: 13
The HO is a great cam, really, if a little anemic in the numbers department. The f4te cam is another really good one (slightly better) imo. End of the day theyre stock cams, i mean think about it (here comes the flame) the letter cams were better. Either one of the cams will be torquey off idle, but theyll fall off around 4500rpm. If you want a stock engine, put a stock cam in it. If emissions are concern, many of the "stage 1" offerings are smogable except for california. Probably the best cam around for "a bit more than stock" is the TFS stage 1, its a great all around cam, works really well with e7 heads.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
The HO is a great cam, really, if a little anemic in the numbers department. The f4te cam is another really good one (slightly better) imo. End of the day theyre stock cams, i mean think about it (here comes the flame) the letter cams were better. Either one of the cams will be torquey off idle, but theyll fall off around 4500rpm..
Lead Driver
Joined: Apr 2008
Posts: 6,941
Likes: 13
Try either with better heads and you'll find this isn't true. Just as running those TF cams with E7's, the powerband moves up. The specs seem anemic with the B cam, but I ran one with Canfield heads and a Vic Jr, the powerband ran from 3 grand to 7500 (run with 1.7 rockers on a 306)
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
As i understand it hes running lightly worked E7s. Yes and no, youre still better off with matched parts. Canfields and victors are will in the performance area, heads that like to flow above where the stock cams even open. Meaning, they dont care about .100-.300" lift, theyre looking at .500-700" lift. My dad had a 440 with ported indy heads and a comparitively tame .680" lift 310 duration cam. Mismatched as hell? yes, worked great, also yes. Made for a unique combo that was hard to race against, most cars (in the pro bracket) dont pickup a lot of speed past the 1/8, the challenger did. Would make guy lift and hed blow by em on the top end. Only made 585 at the wheels, but was a fun 10.30 car.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
There is an extreme end to some parts,(like putting those heads on a bone stock 72-76 302) but generally you can mix parts within reason to achieve the same goal. Or putting a Vic Jr on that too. The 220's valves may not play nice with the pistons on a stock short block.
Lead Driver
Joined: Sep 2003
Posts: 7,015
Likes: 208
From: SoCal
Jacking the thread again. How about this cam:
https://www.edelbrock.com/rollin-thu...l-v8-3722.html
It claims to work with EFI, and even carries a CARB EO, so it must be emissions friendly.
Will it be too much of a choke for a 331 stroker with AFR 165 heads and ported GT40 intake?
https://www.edelbrock.com/rollin-thu...l-v8-3722.html
It claims to work with EFI, and even carries a CARB EO, so it must be emissions friendly.
Will it be too much of a choke for a 331 stroker with AFR 165 heads and ported GT40 intake?