New here, building a bigblock for a big truck.

Hey, been watching this site for a while, some very good info and knowledgable people. I'm currently waiting for my engine to be finished getting built. I wish I could've done it myself, but as with alot of folks, no garage = not building it myself. The engine is getting dropped into my '79 F-250 4x4 that I use mainly for mud bogs, but do go trail riding sometimes and tear around town to crush unsuspecting chevy trash. Truck is running D60s, detroits, 4.88s, a B&M C6 with 2000 stall, on 39.5" TSL swampers.
This is whats getting done to the engine, some say the cam has a pretty tight duration, but I talked to the Comp techs, and its the one they suggest. Just curious what you guys would estimate the HP and torque at.

'71 DOVE-C heads, port matched, 76cc combustion chambers.
2.19 int./1.76 exh. Manley Race Master valves
Comp Roller tip rockers 1.72 ratio
Comp Xtreme energy cam K kit #34-239-4
226 int/234 exh. @ .050" lift
valve lift .554" int./.574" exh.
lobe sep. angle 111
Keith Black Pistons, 040" over bore, 10.5:1 comp.
Wieand Stealth intake
Edelbrock 800 AVS carb
Holley 110 GPH pump
MSD dist., ignition, wires, coil
L&L headers, 1.75" primaries
Melling high vol. oil pump
running on 91 octane

I'll take a wide range guess at 450-550HP, but since you guys have alot of experience with the 460s you might be able to give a closer educated guess. Whats your opinion on the cam?

hey man, your combo is about like mine, and I can tell you for one thing it will probly not like the 91 octane w/o taking some timing away. I've got about 11:1 on DOVE-A's w/ flat tops and it knocks with 93, but who knows...

My combo is almost EXACTLY the same, but i'm 11:1, but with slightly smaller cam(Lunati Hyd:.516int/.543exh & 224/234 dur@ 0.050", 112sep), and stock sized valves in the proted DOVE-A heads. My combo makes 485hp@5500/556tq@3000, and makes OVER 520tq from 1800-4800, and keeps over 450 to almost 6grand. With your bigger cam/valves, it has almost the EXACT same power curve as mine but takes the power and torque up higher and holds it longer(531hp@5500/565tq@4000). I'm basing this off Desktop Dyno, which we all know can be off sometimes, but i'm using it as a comparrison to mine, seeing as how we have a close combo and do close to the same thing with our trucks(mine 79 Bronco though).

Let me tell you I only had C6/4.10's when I was playing in the mud and I had no problem whooping up my 4-36 Iroks(works out to about the same with your 4.88's/39.5's). My 466 pulls clean to about 6000, but it will snap your neck from 1500(in 4wd low on the pavement it will bring the front tires off the ground from powerbraking it from a stop:almost 5800lbs.,most in front!!! I don't think you will have any problem with your cam, that combo should rock in that truck

cool, thats what I was looking for, do you have a higher stall torque converter in the C6? I put in a 2000 stall which may sound mild for the engine, but anything higher would really suck on trails, but if that engine is neck snapping at 1500, I may be buying more swampers earlier then I thought LOL. The engine should be done shortly, and I'll be posting up a vid when I get it back on the road with the dyno sheet included, we'll see how close the desktop dyno is to the real thing.

no, I wanted to see how the stock converter that came behind the 400 would do. I new it would stall higher than stock with the increased power of the 460, and IIRC it stalled round 2200. I am planning on getting a MUCH looser converer when I start sled pulling, but not until I get my bigger motor. The on I have is good on the trails and for back to back pad pulls, stuff like that but it could be looser in the mud...

Yeah, put up the vids when you get them. downtime sucks, I know b/c mine has been sitting for a while, in the process of puttin a D60 in the front to go with my 14bolt, and going to 4.56's and 39.5's

yeah, my truck has been down since November, the engine builders that I'm using build nothing but race engines. They're really busy right now but are slowly moving mine to the front of the line. Gettin impatient, we're planning our season of bogs and I'm hoping I'm ready for the first one, its gonna be tight.

how's the mud up there in Bama'? We haven't had much rain down here lately so everything is pretty dry. Doesn't really matter seeing as how I have to drive my rice burner around instead of my truck...

LOL, actually I'm in Alberta, Canada. The mud up here is gettin nasty, and I'm missin out. I see big trucks runnin around, can't tell what color they are for all the mud. But if it don't start raining soon, its not gonna last long, we got very little snow this winter, maybe 1 foot or so, not cold either. So unless it rains a bunch it may be a dry year.
If you want to you can see a few muddin pics in the gallery I have, just click on the link in my signature, theres a few vids too, just with the small block though.

Hey, what size lift you have on your 79' and tires/wheel size? I have a 67' F350 with 12" lift but debating on tires 40" etc...etc? Then of course height laws here in NV...

Mudfreak:
Oh, saw the thing over to the side and thought Clairmont, Alabama.
It has been WAY too dry down here so far, but that will soon change I'm sure and we will be complaining about all the water when the hurricaines start(well, not me, as my truck is tall :lol: )...
I'm on the way to ur page to check the pics out. I have one at Cardomain.com and Superford also, I'll post the links so you can check them out. im in the process of puttin up some more pics too

Zakt
right now my bronco has about 4" suspension lift, and a 3" body lift and it rides on 36X13.50X16.5 Super Swamper Iroks/16.5X12 Mickey Thompson Classic II aluminum wheels...
depending on what you do with your rig, 38-40 is about as big as I would go on a street driven truck, but people go 44's all the time, to each his own...

check my CarDomain site...

http://www.cardomain.com/ride/2107243

I have a 95' F350 Im yanking everything out of to throw in my 67'.. I was thinking 40" toyos just not sure what rims thinking 20's but might not look right? I have the 85' F350 using the suspension and keeping the old block to build up to swap with the 95' someday :roll:

Heres my project:

http://www.geocities.com/crewcab1967/

greenbronc, that is a killer bronco, I still want one. There ain't alot up here, but I'd sure love to lift one up on some 44s.
Hey I was wondering if you had custom backspaced rims on the bronc with 44s? I'll be using fender exit L&Ls and I'm thinkin I might be rubbing them under full lock steering. Not sure what backspace I might need to remedy the issue.

Zakt, I think you won't have any problems with 39.5s, you could do 44s if you really want but it might suck to drive on the road.

yeah Mudfreak, the rims that the 44's are on actually have alot of work done to them. They started out as 16.5X14 Bart wheels, then they were widened to 20" and had stainless steel inserts put in the middle to make them shiny. If you could see inside the wheel, the place where it mounts on to the hub/rotor assembly is all the way to the inside of the wheel- they do stick out REAL far...

Mudfreak I have those same headers on my green bronco and had no tire rub issues with the Dana 44. I don't remember my backspacing on my Mickey Thompson Classic II rims-12" wide, but they never hit with the 36x13.50x16.5 Iroks at full lock. by the way, those headers are 8) but if you plan on doing a leaf spring converson(aka: Dana 60, unless you happen to find a coil-sprung unit-RARE) the fender-exit headers for 78-79 bronco will come out in the exact position of where your rear front spring hanger needs to be. just something to be aware of, as I am having this problem now and can't use the headers I payed $500 just 2 years ago...

I also have a very close engine combo to this as well. On a truck with 44s. It pulls very well. If there is any moisture on the pavement I can light them up for quite the distance. Its a very good reliable combo. Mine lasted for about 5 years before it needed a rebuild.

I like this combo also, pulls real good from 1500 or so and take off is AWESOME!

Actually my truck is a 3/4 ton with the D60, so that won't be an issue. I have weld super singles with about 4.5" backspace, I guess I'll have to wait till its on the road before I find out if its too close.

for some reason i was thinking you had a bronco...

too much time on the Project Bronco forums i guess.

hey man, your combo is about like mine, and I can tell you for one thing .................My combo makes 485hp@5500/556tq@3000, and makes OVER 520tq from 1800-4800, and keeps over 450 to almost 6grand. With your bigger cam/valves, it has almost the EXACT same power curve as mine but takes the power and torque up higher and holds it longer(531hp@5500/565tq@4000). I'm basing this off Desktop Dyno, ............... that combo should rock in that truck

Hi Greenbroncoguy,

Are you basing the power and torque figures for your combo on dyno figures or are they from Desktop Dyno.

I've been playing around with Dyno 2000 of late and I'm just trying to work out what data input works with the program as compared to real life power outputs.

Thanks

Bill

just Desktop dyno for my motor BillK460, but the motor we just put in our sledpullr was real-life dyno'ed @1282hp/1590tq the first time it was built & put in a 69 mustang fastback, then when we rebuilt a few months ago and I desktop dynoed ot it came in close @1340hp/1675 IIRC, so I am thinking it is close.

When I first got my Desktop Dyno, I wanted to see how close it was, so I found a motor that I know had been dyno'ed in real-life(you could use a crate motor), since you know the hp/tq. Put in the info and see how close it is for a few different ones. As I recall it was pretty close. One thing about DD, you need to be somewhere close on the head airlow #'s and know the cam timing events of what cam you are using, do not let the program figure them out as it will throw you off by quite a bit.

Matt

just Desktop dyno for my motor .......................... One thing about DD, you need to be somewhere close on the head airlow #'s and know the cam timing events of what cam you are using, do not let the program figure them out as it will throw you off by quite a bit.

Yes, I know what your saying. I've compared a few combo's and found with a careful selection of input, that i'm getting close to actual figures quoted.

I'm waiting on headflow figures for my engine before I place any reliance the DD reports.

When you refer to the timing events of the cam do you mean entering the figures seat-to-seat rather than at 50thou, as the DD instructions state that this is a more accurate method? Sometimes its hard to get seat-to-seat figures from websites outlining camshafts available, as they generally issue figures at 50thou.

I believe that the LSA figure and Inlet Centreline figure seam to be an important input variable with software.

When you refer to the timing events of the cam do you mean entering the figures seat-to-seat rather than at 50thou, as the DD instructions state that this is a more accurate method? Sometimes its hard to get seat-to-seat figures from websites outlining camshafts available, as they generally issue figures at 50thou.

I believe that the LSA figure and Inlet Centreline figure seam to be an important input variable with software.

No, I meant at 0.050", but along with lift, you need the BTDC, BBDC, ABDC, & ATDC #'s inputed for you estimate to be accurate. This information would be on the cam card for the cam you buy, but it is usually on the manuf. web site if you are shopping around for a cam or ask who your getting the cam from.

hey 79 supercab here almost the same, just a little differ on heads and cam is a little bigger d -60 in fr. and corp. in back w 4:88 and 38 swampers and 4 sp. but theres nothingwrong with that motor combo. ret. the timing and stay with a dual plane int. and youll have lots a fun hooker has a good header same as l/l but a whole lot cheaper 8)

Hey, thanks. I looked at the Hookers, as well as about 6 other brands but L&L had the best warrenty, and they stand by it pretty faithfully.
Heres a couple pics
http://img89.imageshack.us/img89/717/beautypic7vn.jpg
http://img213.imageshack.us/img213/1851/truckpic1828fu.jpg

http://img213.imageshack.us/img213/1851/truckpic1828fu.jpg

HELL YEAH!!! That's mud slingin man, congrats

truck looks great by the way

Hey there.

I'm looking for ideas on what to do to my spare 460 and the hp and torque numbers are matching up with what I had in mind!

Would a 460 like this do well in a 2wd '78 F-150 with a well-built street/strip C6 and stock size rear wheels/tires? I'd like to use it to school on my friend with a '95 Trans Am and another friend running a ragged '73 F-100 and a '71 Duster.

I'd like to get off-road someday, but I'm leaving for bootcamp in a week and once I get time to do this truck I see it performing more cross-country interstate runs and trailer hauls than any wild off-road endeavours.

Love that yellow monster ya got there! What do you call it? Big Bird or the Schooling Bus?

-Eli

HAHA we don't really have a name for it, unless it breaks then it gets some colorful stuff thrown at it. If you are lookin for something that can do the long haul but still beat your friends cars, I'd throw on a set of aluminum heads, matched intake and cam, MSD ignition and see how that feels to start with. There seems to be more options with a 460 then any other engine IMO, so the sky is the limit, or your budget, which ever you hit first LOL