Re: CGT Mods

[Ssgacc@aol.com]

In a message dated 99-03-17 23:22:45 EST, you write:

<< a reputable shop rebuild it and do a 3 angle valve job on the seats, and
 also cut about 1.5mm from the inside of the seats to really open them up.
 That cost me about $175.  Before all that, I ported the head myself (see
 Standard Abrasives Web page) and had an "expert" inspect things to make
 sure I did everything right (BC Gerolomy in Sacremento)  That did not cost
 much at all-maybe $50 or so in porting tools-you can order a whole kit
 from summit for under $40 and have stuff left over)  I picked up an older
 solid lifer cam and D. Elgin racing in San Jose reground it for me to 270
 for about $150 bucks.  I splurged and got some high lift springs from
 Techtonics ($85) to keep everything from floating, but the stock ones
 could be used.  I also ported and matched the intake manifold for a
 seamless pathway.  In the past I had done a complete high flow exhaust
 including a 4kq manifold, without too much difference in acceleration.
 None of that made a difference untill the real restriction was taken out.
 
Now I understand!  I didn't think many people were willing to do so much of
their owne work.  I had the machine work done on my head for $95, plus a few
things you didn't mention, but things are generally cheaper in NE PA.  How is
that reground cam holding out?  I've heard good and bad things about them for
20 years.  That's where you saved the most money, and what made us all think
you were full of it.  You mentioned removing the REAL restriction.  IME that
usually involves the bowl area on the exhaust side, the transition from valve
seat to the runner.  I also ruined a set of heads for a SBC about 20 years ago
after I went ape$hit with my dad's Dumor hand grinder.  They worked pretty
good six years later with a little refinement on a big cam, high rev motor,
but I had removed too much material to ever have them work on a
street/compromise engine.  Tell me a little more about what you ground on your
head and how the cam is holding up/working.  How many miles since you did
this?

Jim Accordino