Thread: mark IV 454 1983

Tweet

there is no dought big o's and squre's are not cheap even in cast. you'd think with gas priceses this stuff might loss some vaule. on ebay my heads look like there worth 100 bucks, and junk big o's and squares are over 500 bucks

Low buck? Using a $2500 Gear Vendors and cheapin' out on the cylinder heads does not compute with me. I agree completely with Pat.

Kitz

Originally Posted by kitz

Low buck? Using a $2500 Gear Vendors and cheapin' out on the cylinder heads does not compute with me. I agree completely with Pat.

Kitz

I will say that "gear vender" and "cheap" dont go together, but what what doesnt compute for you?

If he were to build a low buck, low revving, torque motor with the "door stops" (I did not say low quality, care should be taken in the assembly), the GVOD would then just put the cruise RPM down where that motor would work the best.

For his application, it seems logical aside from the cost of the GVOD. Maybe an OD tranny would be a better route for the $$, I dont know.

Originally Posted by pat mccarthy

...a small cid big block ...

So for you Pat, thats like ...what... 570+ cubic inches ? You play with big boys toys...

I still play with the kiddie stuff (454 and less)

i'll have to see what my stimules package is merlin cast heads look kind of afforable "what do you guys think?"

Originally Posted by craig akiyama

i'll have to see what my stimules package is merlin cast heads look kind of afforable "what do you guys think?"

what port O or rect

would'nt 049's or 781's ovals have leaded valve seats, say i got them from a junk yard.Yes, but deffenetly ovals

Originally Posted by craig akiyama

would'nt 049's or 781's ovals have leaded valve seats, say i got them from a junk yard.Yes, but deffenetly ovals

i think you may have read that i said you can dump alot of money in the 049or 781 and i have used them if you can find a set cheap. hard to do them heads everyone knows are the better heads to use.if you can find some that do not need every thing and use stock size valves and iron guides then you could do them low buck .i use them with big valves 219/188 and mang bronze guides cut them for bigger valves and put a hard seat in on the ex side and cut them hot tank mang blast them and bowl them out they get to the point were new heads are not to far off

actulley I like to paint I have uploaded a pitcure of my shovel harley, I rebuilt and painted. I was in the middle of painting this truck when the engine broke he (the owner) has abanded it at my house. i havn't put money into it except tearing it down and preping it to dip,im going to tell him to pick it up or give it to me seince i had it about a year now, or put a lien on it or somthing, body work is 80% done

so the seat chang is a must do thing at least for the ex. side

well if you have had it for a year now and did body work and on pay sounds like it is yours had the same thing happen with a engine i had of a year . i did find him sent him a cert letter told him he had less then two months to come get it if not it was mine .i did not want it just did not want to store it for free i have a thing about that

Originally Posted by craig akiyama

so the seat chang is a must do thing at least for the ex. side

well i have cut them of bigger valves with out hard seat i just do it now just to cover my a$$ there is less to cut out that way to. the stock iron head do not have hard seats in them they just harden the iron seat stock not a insert when you cut out for the bigger valve you can use a seat

no big oval cast that had unleaed seats, I've seen those seats fall out, I had a old mac tool truck, got it a little hot and like 4 seats fell out, this was in the early 90's

Originally Posted by craig akiyama

no big oval cast that had unleaed seats

they are not that hard like i said you will cut all of it out if you run a bigger valve then stock head is just induction harden on the ex side not a ring of harder steel just the same iron the hole head is made of

well you can not run a seat thats up to you but you can in time beat the seat out to with out a hard seat how long will that take??? would have to do with how many miles it is going to see and i have done many with out seats i just do not do many this way anymore with the right press they will stay in every car and truck out there now run hard seats and bikes to . the seats alot of the time stay were they should you get any thing very hot some thing is going to hell i have no worry about any seat that i put in .that why i do all this stuff my self and have a machine shop .you need to find a good machine shop to do the job