Looking For Good Sites..looking For A Set Of 67 400 4brl Heads..what Changes On The Pre 65 389s And The Newer??
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Looking For Good Sites..looking For A Set Of 67 400 4brl Heads..what Changes On The Pre 65 389s And The Newer??
Here is a interchange guide.
http://www.wallaceracing.com/interchange.htm
other good sites
http://www.pontiacpower.com/index.html ( good place to send heads for porting...)
http://www.jbp-pontiac.com/index.html ( good place to buy gaskets and the like)
Ebay is about the best place I know to find pontiac heads... lots on there.....( unmolested is best)
http://www.wallaceracing.com/ultimatehead.htm
/\ basic flow #s ( take them with a grain of salt)
If you looking to make big power the Ebrock heads are the only way to go.( ram air IV exhasut)
If you plan on using a pair of cast iron heads--be careful on who does the porting lots of ppl that don't know what they are doing makeing heavy paper wiehgts.
Are you looking for casting #143 heads, are these for a boat? If so they would probably be best for the anchor. (grin) There are a lot other choices for iron heads that may work better, unless you are concerned with correct casting numbers.
Looking For A 65 And Newer Head So I Can Put The Intake I Want On The Boat Has A 62 389..i Was Told The 67 Wa A Good Year Head For What I Am Tryin To Do..what Better Heads Are Out There??fill Me In..thanks..
look at that flow link I posted.... if you really want good flow the ebrok heads are the only way to go.
I used a set of the 670 heads on my 428 poncho and on a nice 400 also and they worked well.
I Really Like The Eddys But$$$$ 1600 Bucks.....maybe In A Few Months..
I ran 6X-8 heads on my 455 powered boat, made good power without porting and was extremely reliable. 455+.030, Late SD rods, forged pistons, real conservative cam, performer intake. Not the slowest or the fastest boat on the water, ran about 75. It was a lot of fun, but moved to a different kind of boat. I still have all the marine parts left, since I sold the boat and kept the motor. I would be glad to share what worked for me, Pontiac powered boat wise.
I ran 6X-8 heads on my 455 powered boat, made good power without porting and was extremely reliable. 455+.030, Late SD rods, forged pistons, real conservative cam, performer intake. Not the slowest or the fastest boat on the water, ran about 75. It was a lot of fun, but moved to a different kind of boat. I still have all the marine parts left, since I sold the boat and kept the motor. I would be glad to share what worked for me, Pontiac powered boat wise.
Ooooo what do you have left???????.... I need some things
Yellow boat you have a PM. M/T