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- Sep 26, 2003
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Does classic SBC have positive valve seals? I thought they only had an o-ring or an umbrella? 

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umbrella seals on anything.
is to use a guide trimmer tool to make the guide height & OD look like some relatively modern Ford w/ 11/32 valve stem that uses a positive seal on the guide.
No, absolutely not.
One good Felpro gasket, flat manifolds, good fasteners, torqued to the top end of the spec.
The Felpro graphlex gasket has been out for many years now, and has proven to be the best solution to the difficult manifold sealing problem. It's so good that Toyota has replaced the sh1tty punched foil gasket with the graphlex one.
you want to get a remflex manifold gasket.
@Mace That block is still in my garage here in New MexicoFunny part is that I had a buddy Bring me a 3F block to the Black hills Cruiser classic cause I thought that a 3F had 7 main bearings.... Boy was I wrong!!!
I like this thread because it brings misconceptions out in to the open![]()
WOW!!@They are, and I know that many folks have re-ringed and installed new rod bearings in an F or 2F at 150K after doing a valve job, and they are going strong yet today...I have an F at the shop that I am doing this to right now...the cross-hatching in the cylinder walls is still very apparent at 125K.
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Thanks alot for all the info. I have a 78 FJ40 2F. Looking at a future build with some head work and better valve train.1977-end.
There are 2 methods.
1. Stock replacement stainless valves.
2. Stainless SBC valves.
The Serdi cutters, especially the one that cuts the entire seat and radiused throat in a single plunge, do a particularly nice job.
Kinda hard to upgrade from Stellite (TM).
Unlimited options w/ the SBC valves. Lighter seat pressure is better for valvetrain longevity.
Yes, although the common SBC swap is 1.84/1.50. Dunno if anybody is gonna make sexy valves in 1.84. Hard enough to find decent stainless in that size.
Titanium is typically harder and more abrasive than common stainless alloys. I would rather have a $10 stainless valve beat itself to death on an exhaust seat, than have a $50 titanium valve beat the seat to death.
Just found this thread. I'm with you on achieving 200+ hp using the 2F six cylinder vice going the V8 route. Amazingly my banker, (wife) has no issue throwing money on 2F motor vive Chevy V8.Why would I throw a rod in a well built 2FE?
I'm not dead set on 250, but over 200 would be nice. So I guess my ultimate goal is to get over 200rwhp and not break the bank getting there, so whenever the money ends, the extras would end.
I don't want to race my truck, but loaded with gear, large tires, etc. 155hp isn't cutting it.
What month was she built?Thanks alot for all the info. I have a 78 FJ40 2F. Looking at a future build with some head work and better valve train.