towing heads and cam question

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Kenneth Flippen
New Member
New Member
Posts: 26
Joined: Thu Jun 23, 2011 11:42 am

towing heads and cam question

Post by Kenneth Flippen » Wed Feb 20, 2013 9:11 am

What's your thoughts on these
http://shop.whiteperformance.com/SBC-CH ... -S-272.htm

Or the assault heads from kmj

I've got a 400 sbc in a square body 3/4 ton crew cab gonna tow a horse trailer with it its bored 20 over with 200cc dished pistons

Question on cam is my understanding a single pattern builds more torque but hurts gas mileage but what's the trade off how much mileage is lost and how much torque is gained I want all my power done at 5000-5500 rpm


Kenneth

wyrmrider
Guru
Guru
Posts: 6932
Joined: Thu Jan 10, 2013 10:52 pm

Re: towing heads and cam question

Post by wyrmrider » Wed Feb 20, 2013 10:46 am

I do not know those heads but I do know that the weight savings of aluminum should not be a concern with your rig
200cc??
the head port volume or the piston dish?
what's your deck height
quench?
whose pistons? number?
do the pistons match the proposed head?
I run a Mike Jones cam in my ported head chevy small block, many years of service life
I had a stable with 130 horses so I know where you are coming from
doing it again with today's oils I'd think of a hyd roller- ask Mike
have your flow data available
also ask him about rocker arm ratios
what's your exhaust? mine's rams horns with 2 1/2 pipes

randy331
Guru
Guru
Posts: 2498
Joined: Mon Dec 04, 2006 7:30 pm
Location: N.W. MO.

Re: towing heads and cam question

Post by randy331 » Wed Feb 20, 2013 11:33 am

For towing with good MPG on a SBC, I'd look at the GMPP small port vortec bowtie heads.

I'd want to re-do the valve job and you'll need a dish piston with 400 ci for sure.

Randy

PackardV8
Guru
Guru
Posts: 4984
Joined: Sun Jul 30, 2006 2:03 pm

Re: towing heads and cam question

Post by PackardV8 » Wed Feb 20, 2013 11:44 am

Yes, OT, since he didn't ask, but building a 3/4t crew cab truck engine to tow horse trailers; would a 400" SBC be our first choice today? Certainly wouldn't be mine. Love them for a budget performance build in a light car; not so much in a tow truck.

Just asking, given the variety of engines which would bolt in where a 400" came originally, what would others choose for similar $$$?

FWIW, one of the better 2500 swaps I ever saw was a 500" Cad and TH400. Dirt cheap, big low and midrange torque. Your results may vary.

jack vines
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering

User avatar
CamKing
Guru
Guru
Posts: 8358
Joined: Wed Aug 08, 2007 4:05 pm
Location: Denver, NC
Contact:

Re: towing heads and cam question

Post by CamKing » Wed Feb 20, 2013 11:57 am

wyrmrider wrote:I do not know those heads but I do know that the weight savings of aluminum should not be a concern with your rig
There's more to running aluminum heads, then the weight savings.
The aluminum heads will allow you to run more compression(about a half a point), without running into detonation issues.
I'd look at the Edelbrock Performer RPM E-Tec 170 heads.

as for cam design, I'd need to know what RPM the engine is at when you're cruising down the road, pulling the loaded trailer.
Mike Jones
Jones Cam Designs
Denver, NC
jonescams@bellsouth.net
http://www.jonescams.com
(704)489-2449

wyrmrider
Guru
Guru
Posts: 6932
Joined: Thu Jan 10, 2013 10:52 pm

Re: towing heads and cam question

Post by wyrmrider » Wed Feb 20, 2013 11:59 am

500 caddy- good choice but if he needed real grunt for lot's of miles he'd get a diesel
vortec heads also- better than standard 64 cc heads-- where those in the picture fast burns or what?
google up those kmj heads- procomps?
not very stellar reviews- whose heads are the first pair?

Kenneth Flippen
New Member
New Member
Posts: 26
Joined: Thu Jun 23, 2011 11:42 am

Re: towing heads and cam question

Post by Kenneth Flippen » Wed Feb 20, 2013 12:02 pm

Type error on the piston its 20cc dish long tube headers 1 5/8" 3" collectors

swatson454
Guru
Guru
Posts: 1960
Joined: Thu Sep 03, 2009 6:06 pm
Location: Dripping Springs, Texas

Re: towing heads and cam question

Post by swatson454 » Wed Feb 20, 2013 12:10 pm

I don't know... a 9:1, E-Tec headed, MPFI 400 with a hydro-roller that's 208/212 ish on a 108 could be worth looking into. I'm sure Mike would spread the lobes :D

Cruise along at 2,500 rpm, locked up in "D". Maybe?


Shawn
Live in such a way that those who know you but don't know God will come to know God because they know you.

Kenneth Flippen
New Member
New Member
Posts: 26
Joined: Thu Jun 23, 2011 11:42 am

Re: towing heads and cam question

Post by Kenneth Flippen » Wed Feb 20, 2013 2:43 pm

CamKing wrote:
wyrmrider wrote:I do not know those heads but I do know that the weight savings of aluminum should not be a concern with your rig
There's more to running aluminum heads, then the weight savings.
The aluminum heads will allow you to run more compression(about a half a point), without running into detonation issues.
I'd look at the Edelbrock Performer RPM E-Tec 170 heads.

as for cam design, I'd need to know what RPM the engine is at when you're cruising down the road, pulling the loaded trailer.
I'm guessing 2000-3000 cruising

User avatar
CamKing
Guru
Guru
Posts: 8358
Joined: Wed Aug 08, 2007 4:05 pm
Location: Denver, NC
Contact:

Re: towing heads and cam question

Post by CamKing » Wed Feb 20, 2013 3:15 pm

If you went with the edelbrock heads, and 9.5:1 compression, and 1.5 rockers.
I'd recommend my Hydraulic Roller. Part# HR65327-67312-111
206/208 @.050"
.490"/.468" Valve Lift
111 LSA
Mike Jones
Jones Cam Designs
Denver, NC
jonescams@bellsouth.net
http://www.jonescams.com
(704)489-2449

cuisinartvette
Guru
Guru
Posts: 1341
Joined: Fri Sep 05, 2008 11:39 pm
Location: Valencia Ca

Re: towing heads and cam question

Post by cuisinartvette » Wed Feb 20, 2013 4:22 pm

Who the heck is doing their port design. :shock:

User avatar
CamKing
Guru
Guru
Posts: 8358
Joined: Wed Aug 08, 2007 4:05 pm
Location: Denver, NC
Contact:

Re: towing heads and cam question

Post by CamKing » Wed Feb 20, 2013 4:44 pm

cuisinartvette wrote:Who the heck is doing their port design. :shock:
Who are you talking about ?
Mike Jones
Jones Cam Designs
Denver, NC
jonescams@bellsouth.net
http://www.jonescams.com
(704)489-2449

Kenneth Flippen
New Member
New Member
Posts: 26
Joined: Thu Jun 23, 2011 11:42 am

Re: towing heads and cam question

Post by Kenneth Flippen » Wed Feb 20, 2013 5:12 pm

CamKing wrote:If you went with the edelbrock heads, and 9.5:1 compression, and 1.5 rockers.
I'd recommend my Hydraulic Roller. Part# HR65327-67312-111
206/208 @.050"
.490"/.468" Valve Lift
111 LSA
Whats the price on the roller cam and lifter combo
And what would it be on flat tappet cam and lifters


Kenneth

User avatar
CamKing
Guru
Guru
Posts: 8358
Joined: Wed Aug 08, 2007 4:05 pm
Location: Denver, NC
Contact:

Re: towing heads and cam question

Post by CamKing » Wed Feb 20, 2013 5:23 pm

Hydraulic roller cam and lifters, about $850
hydraulic Flat tappet cam and lifters, about $300

For a Hydraulic flat tappet, I'd recommend my part# H65295-67300-111, and put a 1.6 rocker on the intakes
204/210 @.050"
,472"/.450" Valve Lift with 1.6/1.5 rockers
111 LSA
Mike Jones
Jones Cam Designs
Denver, NC
jonescams@bellsouth.net
http://www.jonescams.com
(704)489-2449

Warpspeed
Guru
Guru
Posts: 1379
Joined: Fri Nov 17, 2006 4:10 pm

Re: towing heads and cam question

Post by Warpspeed » Wed Feb 20, 2013 7:15 pm

CamKing wrote: 204/210 @.050"
,472"/.450" Valve Lift with 1.6/1.5 rockers
111 LSA
That is a very mild gentle cam, why would it even need rollers ?
Cheers, Tony.

Post Reply