360 head choices. What's everyone running?

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pittsburghracer said:
Personally if I was going to take one out of the box and throw it on I would go with a ProMaxx Head. After having many Edelbrock heads in my hands, my Speedmaster heads, and a Friends ProMaxx Head The ProMaxx looked and flowed the best. The valve job done on the ProMaxx Heads was much nicer.
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I thought your speed Masters were bare heads?..
 
I would expect the PM heads to have a “better”(nicer?) valve job than the SM heads, since it’s claimed to be done in house at their shop in Alabama.
Plus they supposedly have the bowls blended too(according to the website).

But, you do pay something for it.
They’re about $300 more than the SM heads.
 
PRH said:
I would expect the PM heads to have a “better”(nicer?) valve job than the SM heads, since it’s claimed to be done in house at their shop in Alabama.
Plus they supposedly have the bowls blended too(according to the website).

But, you do pay something for it.
They’re about $300 more than the SM heads.
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I’d rather save the 300 and do my own valve job.
 
It’s the stuff like this that you gotta watch out for...... and without inspecting them, you wouldn’t know if you had some like this or not.

This is a fresh ootb SM BBM head.
No...... they’re not all this way...... but..... some are.

58D7798F-CEED-49D8-8455-821965157488.jpeg


You’re gonna have a hard time “buffing that out” with lapping compound.
 
PRH said:
It’s the stuff like this that you gotta watch out for...... and without inspecting them, you wouldn’t know if you had some like this or not.

This is a fresh ootb SM BBM head.
No...... they’re not all this way...... but..... some are.

View attachment 1715572095

You’re gonna have a hard time “buffing that out” with lapping compound.
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Chattered
 
Come black Friday...buy the SM bare....buy SM intake and exhaust valves....get springs to fit your camshaft.....chromemoly retainer and keepers..... Take to local machine shop...done...
 
PRH said:
I would expect the PM heads to have a “better”(nicer?) valve job than the SM heads, since it’s claimed to be done in house at their shop in Alabama.
Plus they supposedly have the bowls blended too(according to the website).

But, you do pay something for it.
They’re about $300 more than the SM heads.
Click to expand...
i have been talking to promaxx this morning.. they said they should be good out the box with arp head bolts and my stock rockers
 
All these great ideas for a 213* Whiplash that power peaks around 4600? Maybe 4800.
IDK, don't they call that cam a 318-Whiplash. I wonder why.
213/226/110 @.050, and lobe lifts of .320/.344 Oh that's why.

Even if you rev thru the peak to say 5200, how much head can that cam use, considering how the power is rapidly tanking? And how much more power that couldn't be cheaper had with a next bigger cam.
 
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AJ/FormS said:
All these ideas for a 213* Whiplash that power peaks around 4600? Maybe 4800 with great heads.
IDK, don't they call that cam a 318-Whiplash. I wonder why.
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i would run it with my current 318 heads, but if i ever wan to upgrade the cam the heads wouldn't breathe very good , but they also make a 318 and a 360 whiplash cam
 
texas360 said:
i would run it with my current 318 heads, but if i ever wan to upgrade the cam the heads wouldn't breathe very good , but they also make a 318 and a 360 whiplash cam
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isn't it pretty well known that the whiplash cam is kind of a gimmick cam to make your car sound good but definitely not what anybody would call a performance cam?...
 
j par said:
isn't it pretty well known that the whiplash cam is kind of a gimmick cam to make your car sound good but definitely not what anybody would call a performance cam?...
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i dont see alot of power coming from a stock dished bottom end either... im building a cruiser not a track car...
 
texas360 said:
i dont see alot of power coming from a stock dished bottom end either... im building a cruiser not a track car...
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Then back to @318willrun s question...
Maybe just doing a simple valve lapping on some factory 360 heads.. with the cam you talking about and your intentions for driving I don't see promax being the bang for the buck...
 
j par said:
Then back to @318willrun s question...
Maybe just doing a simple valve lapping on some factory 360 heads.. with the cam you talking about and your intentions for driving I don't see promax being the bang for the buck...
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i haven't found any stock heads that are in just need of a valve lapping.. most i find are beat the hell up.. needing guides and ****..
 
AJ/FormS said:
All these great ideas for a 213* Whiplash that power peaks around 4600? Maybe 4800.
IDK, don't they call that cam a 318-Whiplash. I wonder why.
213/226/110 @.050, and lobe lifts of .320/.344 Oh that's why.

Even if you rev thru the peak to say 5200, how much head can that cam use, considering how the power is rapidly tanking? And how much more power that couldn't be cheaper had with a next bigger cam.
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with 1.5 rockers it .480/.512
with 1.6 rockers it .512/.550

that's plenty for a weekend cruiser ..
 
For now, just planning on using my 308 heads for my 360 build. After doing the reading, if/when I have the money, I kinda liked those cnc Shocker 185 Promaxx heads. The price is acceptable to me.
 
texas360 said:
with 1.5 rockers it .480/.512;with 1.6 rockers it .512/.550
that's plenty for a weekend cruiser ..
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It's still just a 213 cam.The lift could be 2 inches and it won't make any more power. Lift by itself is not a good yardstick to measure power with.

If you just want a fun weekend bomber, then try a fast-ramp,tight-lash, solid-lifter cam, a 2800 stall, 3.91s; and call it done. Well, I mean, and the usual bolt-ons and support works.
 
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AJ/FormS said:
It's still just a 213 cam.The lift could be 2 inches and it won't make any more power. Lift by itself is not a good yardstick to measure power with.

If you just want a fun weekend bomber, then try a fast-ramp,tight-lash, solid-lifter cam, a 2800 stall, 3.91s; and call it done. Well, I mean, and the usual bolt-ons and support works.
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currently running a cammed 318(225 hp crank), 4 barrel, 2600 stall and 3:55 gears,its a wore out 15 yr old rebuild
 
AJ/FormS said:
All these great ideas for a 213* Whiplash that power peaks around 4600? Maybe 4800.

Even if you rev thru the peak to say 5200, how much head can that cam use, considering how the power is rapidly tanking? And how much more power that couldn't be cheaper had with a next bigger cam.
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Any cam given a better flowing head will have its power band extended by a few hundred rpm and n the low side. This would be for a low lift and duration cam. Bigger the cam, the more of a benefit.
j par said:
isn't it pretty well known that the whiplash cam is kind of a gimmick cam to make your car sound good but definitely not what anybody would call a performance cam?...
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I agree. It will sound cool and actually make OK power.
I can think of better cams or just simply move the 110 centerline down to a 108.

Ottmundr said:
I kinda liked those cnc Shocker 185 Promaxx heads. The price is acceptable to me.
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Wait for the ”Sale.” I used a set on a 360 w/roller rockers. Nice head for the price with room to grow via more porting.
AJ/FormS said:
The lift could be 2 inches and it won't make any more power. Lift by itself is not a good yardstick to measure power with.
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First sentence, technically incorrect. As long as the head will support the lift, flow the same or more air than The low lift it was at, it will make more power.

Second sentence, I agree.

If you just want a fun weekend bomber, then try a fast-ramp,tight-lash, solid-lifter cam, a 2800 stall, 3.91s; and call it done. Well, I mean, and the usual bolt-ons and support works.
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I believe that the choice of the Whiplash is not only the sound but the duration for its intended rpm band. Read his quotes below...


texas360 said:
with 1.5 rockers it .480/.512
with 1.6 rockers it .512/.550

that's plenty for a weekend cruiser ..
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Agreed with you texas360. AJ, look at the lift and how the head flows.

texas360 said:
currently running a cammed 318(225 hp crank), 4 barrel, 2600 stall and 3:55 gears, its a wore out 15 yr old rebuild
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If you rebuild it, KB has a flat top and a small domed piston in Hyperutecic. FWIW, I run an 11-1 - 360 around on pump gas with a 224@.050 .538/.536 - 110 Hyd. roller and the ProMaxx CNC’d heads with the same stall and 3.55’s on a 26” tire. While it could use more stall and/or gear to maximize the combo, it does drive the interstate.

The top end pull is pretty good and it lasts a while due to the gears. The ProMaxx CNC Shockers that replaced the as cast Edelbrock’s rpm head, definitely feel like there is more power there. There was even a bit more when I switched to a 1.6 rocker. Mild gain though. While 3.90’s or 4.10 would seriously wake this up, interstate travel at 70-75 mph is not in the cards.
 
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