[Vid]

Hi All,
Anybody have experience with a Howard’s 411161-10 hft cam?
465/470, 223/235@.050, 110, 2-6k range. If so how do you like it and what cube, compression, trans and gear were you running? This cam is on my short list for the new motor in my ‘69 LeMans, 455, 4speed and 3.23/3.40 rear. No strip just street usage to plunder and pillage Mustangs, Challegers and Civics LOL Thanks, ‘Vid Sutton.


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[GoatZillaRacing]

For stop light to stop light Mustang shaming I'd go with https://pontiacspeedshop.com/rattler...80-488-109lsa/

[Vid]

Originally Posted by GoatZillaRacing

For stop light to stop light Mustang shaming I'd go with https://pontiacspeedshop.com/rattler...80-488-109lsa/

Another tempting choice, this grind is also on my radar. I’m trying to hit that mark where it’s “comfortably streetable” but doesn’t disappoint under throttle.


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[steve25]

With iron heads?

[Vid]

Originally Posted by steve25

With iron heads?

Yeah, I’m getting my 62’s ported by a shop in Sonoma, CA. Pistons will be dished about 28cc for something around 9.4:1.


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[Cliff R]

That 2000-6000rpm range may be close in a 350 build but that cam will be DONE before 5000rpm's in a 455 build.

I didn't see the compression ratio mentioned but the smallest cam I'd even think about putting in a well thought out 455 build would be 230 @ .050" and at least 280 @ .006".....FWIW......

[GTOLou]

Originally Posted by Cliff R

the smallest cam I'd even think about putting in a well thought out 455 build would be 230 @ .050"

Cliff has been typing this since I've been on this forum - he's got to be getting tired of it - this statement is as close to gospel when camming a 455 as there is..

[leeklm]

Originally Posted by GTOLou

Cliff has been typing this since I've been on this forum - he's got to be getting tired of it - this statement is as close to gospel when camming a 455 as there is..

Yeah, I was one of those guys installing too small of cam in a 455 before getting on this forum. Let's just say that experiment was short lived...

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[steve25]

Well like Cliff posted you need more duration and I would want to run the valve lift to .525” to .550” to take good advantage of that porting work!



What will you run for a intake?

[Steve C.]

If you insist on using a cam from Howard's consider their H2333383 lobe on the intake side, it is a Harold Brookshire Design.

Seat 279
.020 257
.050 233
.200 147
0.3380 lobe lift

Have it custom ground. Use a exhaust lobe that is suited to your exhaust flow after the port work is done to the cylinder heads, that and the entire exhaust system on the car.
Have it ground with whatever lobe separation desired, be it the 109, 110 or even a 112.


.

[pastry_chef]

Originally Posted by Steve C.

If you insist on using a cam from Howard's consider their H2333383 lobe on the intake side, it is a Harold Brookshire Design.

Seat 279
.020 257
.050 233
.200 147
0.3380 lobe lift

Have it custom ground. Use a exhaust lobe that is suited to your exhaust flow after the port work is done to the cylinder heads, that and the entire exhaust system on the car.
Have it ground with whatever lobe separation desired, be it the 109, 110 or even a 112.

X 2

That 455 will want 1.65 ratio rockers, if you have clearances for them.

Also pay attention to the valve spring specs.

[Steve C.]

I will also point out Tim Goolsby at Bullet Racing Cams has a very nice lobe to consider on the intake side, but it has a tad bit less .050 duration and less lobe lift than the Howard's lobe.
I mention them because Tim is very good to work with and very 'Pontiac savvy'.

It is his number H276/330 either the A or B lobe depending on the rocker arm ratio in use.

seat 276
.050 228
.200 140
.3300 lobe lift

.

[pastry_chef]

Originally Posted by Steve C.

It is his number H276/330 either the A or B lobe depending on the rocker arm ratio in use.

seat 276
.050 228
.200 140
.3300 lobe lift

That is very close to the Voodoo 703 intake lobe - 455 dyno here (stock heads).
http://forums.maxperformanceinc.com/...d.php?t=776169

[Vid]

Originally Posted by steve25

What will you run for a intake?

Going to run an RPM with an 850 DP for starters. I’m a little embarrassed for not running a Qjet so I’ll hide that under a dual snorkel, haha

I’m on the fence between RARE OS RAIII manifolds and mid/full length 1 5/8 headers.

Right now the car has a 3:23 open rear. I figure I’ll get the motor in and see how I like the 3:23’s with the combo, but a 9” is coming after I get the motor in. I’ll tweak the gear based on what the new motor seems to want. It’s probably not too far off with the 3:23’s.


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[steve25]

It may not want 1.65s on the exh side dependent on what the exh port work picks up !

[OCMDGTO]

Vid, My builder(Gaydosh Performance/Baltimore) has been using his custom ground Howard's HFT cams in recent years. Myself and Mook on here have the same cam(I have D ports & he has round ports) and both dynoed 569/580hp and 630 tq so obviously a HFT can get it done. I think your 3.23s are a GREAT choice(get posi though).

[Steve C.]

Googled up.....

"Measuring dyno results from one facility to another is always going to be like measuring apples to oranges to some degree, regardless of the correction factor. Finding a reliable dyno shop takes research, patience and sometimes a little luck. Ask around."

It is silly to consider only dyno testing at KRE is valid and others are not relevant.

Side note, I know Rocky Rotella has used Howard's cams with good results.


.

[Vid]

Originally Posted by OCMDGTO

Vid, My builder(Gaydosh Performance/Baltimore) has been using his custom ground Howard's HFT cams in recent years. Myself and Mook on here have the same cam(I have D ports & he has round ports) and both dynoed 569/580hp and 630 tq so obviously a HFT can get it done. I think your 3.23s are a GREAT choice(get posi though).

Those are some big numbers! Thanks for the info. Is that with aluminum heads? I like the 3:23 too and yes a posi is on the master plan


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[OCMDGTO]

Vid, We both have aluminum heads/467" and we both put a lot of street miles on our cars. I have over 7k miles on mine and Mook definitely has more miles on his. Gaydosh has a few different custom grinds and usually has a few in stock.

[pastry_chef]

OCMDGTO, looks like 245/251D .561/.594

I like it. Curious on the LSA and idle vacuum.