cylinder heads with HP manifolds

[fk5dave]

hi guys. i am looking into some new cylinder heads since the 440source heads failed me. machine shop said the valve guides wore out and some of them broke off on the top. at the time the money was an issue so i went with them but now i am looking into USA made. the problem is that trickflow, indy, and edelbrock all have angled spark plugs and from what i understand the HP manifolds will not clear the angled plugs. i know i leaving HP on the table with HP manifolds but they are so reliable with the no leaks or trouble. anybody else ran into this trouble? i have a .582 solid roller cam, 850 mighty demon carb, torker 2 intake, etc etc. making good power. i would like to stick with HP manifolds but if i have to go to a good header like TTI i guess i will have to. anybody have any suggestions?

 

[lewtot184]

i'd recommend headers with that engine combo. headers will free you up on head choices. I use 2" tti's with edelbrock rpms and plug changes and plug clearance are exceptional.

 

[strokie]

I use Performer RPM cylinder heads no problems with HP manifold...

 

[1967coronet440]

TTI or Doug’s for sure.

 

[1967coronet440]

Max wedge victors with 2” TTI’s

 

[fk5dave]

I use Performer RPM cylinder heads no problems with HP manifold...
View attachment 542114

do you have any issues with the spark plug boot being too close to the manifold or anything?

 

[540 XRAM]

Max Wedge Victors with Original Max Wedge Exhaust Manifolds and original '64 Stage 3 intake

 

[1967coronet440]

Max Wedge Victors with Original Max Wedge Exhaust Manifolds and original '64 Stage 3 intake

View attachment 542122 View attachment 542123 View attachment 542124

What did it make on the dyno?

 

[strokie]

Just use spark plugs blankets for the last two passenger side spark plugs..

 

[fk5dave]

Just use spark plugs blankets for the last two passenger side spark plugs..

View attachment 542126

thanks for the pics. it has been a great help. p.s. nice engine bay! clean

 

[Bee1971]

I use Performer RPM cylinder heads no problems with HP manifold...
View attachment 542114

X2

Click on link

https://www.hughesengines.com/TechArticles/10hpmanifoldshookersupercompheadersonbigblockangle.php

 

[PeteBell68]

That's a great guide on manifold selection

 

[fishmens67]

Failed guides and breaking off the top. Improper rocker arm geometry could be imposing side load on valve stem causing premature guide wear.

 

[fk5dave]

Failed guides and breaking off the top. Improper rocker arm geometry could be imposing side load on valve stem causing premature guide wear.

I was thinking about that too. How can it be adjusted though if the rocker shaft is in a fixed location. I sharpied the valve stem, bolted down the rocker shafts, used my pushrod checker tool and calculated a length with the proper lash (solid cam) and went with it. They are Harland Sharp roller shaft/roller tip rocker arms. Anything I am missing? Thanks for the input

 

[XCELLR8]

hi guys. i am looking into some new cylinder heads since the 440source heads failed me. machine shop said the valve guides wore out and some of them broke off on the top. at the time the money was an issue so i went with them but now i am looking into USA made.

How long have the "source" heads been in use?

 

[fk5dave]

How long have the "source" heads been in use?

about 5 years maybe 3k miles

 

[540 XRAM]

What did it make on the dyno?

650 ft. lbs. and 600 horse on 91 octane pump gas.

 

[IQ52]

I was thinking about that too. How can it be adjusted though if the rocker shaft is in a fixed location. I sharpied the valve stem, bolted down the rocker shafts, used my pushrod checker tool and calculated a length with the proper lash (solid cam) and went with it. They are Harland Sharp roller shaft/roller tip rocker arms. Anything I am missing? Thanks for the input

How? Go here and read up on rocker arm geometry and how to correct it.............

http://www.b3racingengines.com/

 

[Garys1969RR]

It seems as if the angle of the spark plug tips towards each other would give you more clearance than even the stock plugs have. They point AWAY from the exhaust passages in the head and manifold. I used Jegs/Patriot headers on my Performer RPM heads, and they cleared really good, other than having to make a couple of small dimples in the header pipes for additional plug boot clearance.

 

[XCELLR8]

about 5 years maybe 3k miles

Thank you.