540 reher morrison

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Apr 13, 2008 | 10:14 PM

jboweriii

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540 reher morrison

there super street comes with dart pro 1 heads, will my 427 hooker super comp headers work and clear, and will my valve covers fit( i had them notched out to fit ) bolt on, thanks

Apr 13, 2008 | 11:02 PM

gkull

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The big ? is what are the E port size of the heads. R&H might require 2 1/8 or bigger. Look up the heads on Dart heads and see the port size

Apr 13, 2008 | 11:34 PM

427Hotrod

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Dart heads are raised somewhat. Might be tight and require a dimple or two. My Brodix heads' ports are raised .600 and the Hooker 2-1/8" Super Comps actually seem to fit better on them than they do on stock heads. Look closely around your headers and envision raising them up a 1/2". Usually right side is fine and the left side gets tight by the sterring box and the #3 tube and sometimes around clutch crosshaft.

JIM

Apr 14, 2008 | 06:43 AM

Fonz69

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Headers will fit

I just stuffed my 540 with dart pro1 heads in my 69 with hooker super comp side exhaust.

You will have to dent at the lower LH frame rail and the #3 plug is a big pain the a$$ you will have to dent in the tube to get the plug to fit and spark plug boot to work.

Also the pipe near the steering box will need to be dented up a little higher to help clear.

All in all it will fit but will take a little extra work.

I ran tall valve covers cause I have a full roller setup and needed the room and it all just cleared with only minor adjustments made to the factory brackets

Apr 14, 2008 | 07:27 AM

jboweriii

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i did'nt have any problems with stock 427 heads...

my super comps diameter sre 1.89. I had no problems. Are the diameters between the 2 types of headers the same? Thanks

Apr 14, 2008 | 12:24 PM

427Hotrod

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Is that inside or outside diameter?

A 540 is going to want at least a 2" header up to about 6400 rpm or so....after that a 2-1/8" is the best way.

JIM

Apr 14, 2008 | 12:31 PM

zwede

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Quote:

Originally Posted by jboweriii

my super comps diameter sre 1.89. I had no problems. Are the diameters between the 2 types of headers the same? Thanks

Sounds like the 1 7/8" headers. That's too small for a 540.

Apr 15, 2008 | 10:37 PM

VETMANIAC

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Markus is advising you correctly. I had 1-7/8 headers on my 540 and they were definitely strangling it. You should run 2 inch primary tubes if you can.