NOT as a HP piece USING those stock heads with the huge water pump ??.....what did you do about that loooow compression ? Leave the heads dead-stock ? Any upgrade on the cam ? Carburation ? Intake ? Exhaust ?

If you are on an extreme budget and dont plan on new pistons- could you install a camshaft that maximizes cyl pressure?

If your going to reuse it in a truck or motor home I would check the bores first for taper and wear first and go from there I would try to duplicate the original parts for the heavy duty use
They where designed to be ran at or near WOT for long times and live carrying a lot of weight
I don't remember what RPM they where governed at but it was not above 4500 RPM if I'm thinking correctly

If your gunna do it,,,do it right and make the power it needs to travel and be able to pass!! Unless you drive like a gEEzEr

hi

maby an r v cam and mill the heads some .

other option to rais compression is prob costom pistons ?

Dayummmm .... 184 views !! .... it’s no BARN FIND popular topic like some post ... but i am surprised ! ..... I have two gasser motor homies I’d like to play with IN DEPTH. The only thing I’ve done so far is that junker cast inon intake and that pathetic Holley carb. On top now is Eddy Streetmaster intake and a PLASTIC FANTASTIC !

2b .... don’t have a bottomless budget like some toe and sno hoes do !! ... (aka .... who have a towing and snow clearing businesses) !! ....

PISTONS are the main concern .... I have THREE SETS to consider - std bore 11 to 1 max wedge pop ups, and two sets of 413 30s and 60s ... gotta do some specing of the block deck and cyl head CCs ..... cal head is supposedly way over 100 cc. A cam is also super important !!

CABster .... I’ve talked to several people who have used these blocks for HP use and taper and wear were never an issue they saw. NEVER MUCH sludge build up because the motor is so heavily loaded PLUS low miles. I have one part apart up in Michigan that has ZERO sludge !

CORRECT THAT ..... Isn’t that DRIVE LIKE a Long Islander ??!! 5 to 10 mph In that traffic MOST OF the 24 hours of the day !!!

DONT you have a snow drift to plow OR GET your rig to get stuck in ??!!...

cr2 .... absolutely an Rv cam ... any suggestions ? The heads you have to stick with. They’are ABSOLUTE JUNK for HP ... but for a GRUNT MOTOR .. they are perfect IMO. Custom pistons ? ... if need be -!YEA !

After you get out of the greater NYC area the speed picks up to 25 MPH.
So if your gunna build something,do right the 1st time!Splurge for some aluminum heads and aluminum dual plane intake.Make it a torqueee package to pulling up hills with a car trailer is effortless!

OPEN that wallet and let the moths FLY!!

Jsta nutter joker from NYC ! ... gEeZeR 25 mph speed in nEw YaCk ! ... alum heads on a grunt V8 moder ! ... put down that fatty !

You could go old-school and find some 915 heads

If it's only going to be a truck engine, no sense in using 915 heads. They are waaay expensive these days. A set of 516's would work great in a truck. I am using a set with larger exhaust valves on the 440 in my pickup. It rarely if ever see's north of 5 grand and makes all kinds of torque with the factory .430 lift cam.

PB .... do you know how long a set of 915s would last on a motorhome modern during a long pull up a Tennessee mountain ?

Guys .., yurr missing the point and purpose of those goofy heads !

Anyone know how truly SPECIAL those heads are ?

Lots of cooling around the exhaust.

Kevin

Does anybody else get a headache from reading Doc threads?

As has been posted, the whole package was designed to run with both feet flat on the floor pulling hard at 3500-3800 rpm for hours and hours.

I started my illustrious career in a swing fender C800 with a 413.

Kevin

Ahhh Mr Sears from Roebuck .... how’s the weather UP THERE ??!!

BIG TIME cooling ..., I’d be willing to wager maybe TWICE the cooling capacity in those heads than any other RB head made ! .... and also cost Chrysler(so I was told) 100$ the pair or each) to produce.