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Are you talking 360 or 318 pistons? The KBs tend to have the top ring closer to the crown so it gets a lot more heat hence the need for a larger gap. Hypereutectic alloys are lighter but more brittle and will fail faster than a typical cast or forged slug if you have detonation issues. The speed...

I tend to agree with 318willrun, weiand action plus or edelbrock performer manifold ( the weiand is probably the better intake but not much between them). Vac sec carb around 600cfm (holley or carter/edelbrock - whatever you are most familiar with for tuning purposes), headers and dual exhaust...

Yeah i think they had a pretty lose tolerance on that 9.6" deck height though. Mine also had a taller deck on the driver's side. Ended up with 9.575" after they were cleaned up and evened out, and a 0.013" positive deck height with KB167s. Did you have issues with intake manifold fitment With...

This probably won't be much help to you as this motor had been apart a couple of times with a 0.040" overbore, but on my 1973 casting 318 the pistons were about 0.070" in the hole. The block had been decked before but I don't know how much was taken off. Factory pistons could of had a higher or...

You could pull one of your hydraulic lifters apart and shim it solid for your checks

Pretty sure Howards grinds the cams for Hughes engines. If you have a search around on the Howards cams website they have a pdf with all their lobe profiles listed on it, there are some interesting lobes there. Doesn't cost that much more to pick what you want and have them grind you a cam. I...

I used a comp XE250H in a similar setup - mid 70s 318 with ported closed chamber truck heads (very similar to the 920 castings) edelbrock performer manifold with 625cfm carter AFB, headers and 2.92 gears. Good power bump from stock but nothing crazy, it was a pretty good setup for a low buck...

Toowoomba products - these will be very early production heads cast in Australia (first couple of runs) not sure if there were changes made to the castings when they moved production to NZ.

Yeah makes perfect sense...... instead of replacing the pistons in your 318 just buy a 360 and replace the pistons :BangHead:

A 400hp 318 is definately doable, but not for 3 grand. Not sure what machine shop rates are like in the US but over here you would spend most of your budget just on machining and balancing. I will go against the grain here and say a 15/16 year old in car built in the 70s with a 400hp motor is a...

Yes, but they are advertised timing numbers not timing at .050" lift. (37° to TDC + 180° to BDC + 69° after BDC = 286° ) there would only be a few degrees between .006" lift and fully closed. Someone here may have a cam card with the .050" timing numbers. But it will close the valve well before...

Hmmm... $1900 for a set of comp FT lifters - I would just go for a roller cam

Yeah the .050" timing plus 15 degrees isn't that accurate - depending on the lobe profile you could be way off. (Old school easy on the valvetrain grinds vs agressive lobes designed for a .904" lifter). The timing on the summit description are at .006" lift and probably closer than the 84°...

Kirby-Bishop made variable ratio steering boxes & racks for Fords & Holden's in Australia and later for Mercedes and a few others aswell. I have one of their variable ratio power steering boxes to go in my valiant - 2.5 turns lock to lock, 17.5 - 11.5 ratio. I couldn't find much info on them but...

I've used the blue hylomar spray with success in the past if the surface finish is a bit rough. But as TT5.9mag said if your surface finish is RA50 or finer install them dry.

^^This. I would put a baffle in - cheap insurance and easy to do while the engines out. There are a few mobs here in Australia that make laser cut baffles for the stock pans, surely they would be available in the USA too?

I would be stoked if it hits 400hp, wasnt particulary trying for a number just a good strong motor. I agree there's a few more HP to be had with a bigger carb - I wanted to try out an AVS2 as many people rave about them, after much deliberation i opted for the 650 over the 800cfm. I wouldn't...

I'm no expert either but I would think the comp with the shorter advertised duration & narrower LSA would yield better cylinder pressure / dynamic compression all else being equal. Assuming both use the same lift point for advertised duration.

Here's one I built last year but haven't gotten to getting it in the car & running yet (car stuff has gone on hold due to having a baby). 73 318 block bored .060" over, factory cast crank ground 20/20, reconditioned factory rods fitted with ARP bolts & setup for floating pins, KB167s 0.013"...

Sure he has.... he is a retired "master mechanic" remember? :rolleyes: He seems to enjoy dumping crap on others for not running a 340 without sharing any of his own engine builds or cars. To get 275hp out of a 318 to match a 340 factory output is downright impossible without those extra...

Don't worry - in another couple of months he will be back with more threads about 318 pistons, 340 cams and why there aren't any museum quality cars for sale under 20k

I would bring that way down, how will it will fit with the stroker crank and main studs I don't know. But get it as close as you can get "within reason" mine ended up like this: That was something that crossed my mind during the install - I added extra drainage slots & holes to help get oil...

Dan I've used these before and you can run a reasonable sized cam and still have adequate piston to valve clearance. If your going to build a fire breathing 318 with a wild cam then cough up the extra couple of hundred for the KB167s. Flycutting valve relifs in them is also an option as...

Did you read my post Dan? Get a speed pro H814CP and measure it against your stock 318 piston and report back. Oh wait I forgot - you cant because you don't even have a car, your putting the cart before the horse....again :rolleyes: They aren't going to get you to 0 deck but they are taller than...

^^ SBM edelbrock/speedmaster heads are a 170cc runner? And work just fine an a 318. I think You should buy a car before you think about buying a set of heads.

I haven't looked for a little while, but there are the speed pro hypers at 1.755" compression height & the kb167s at 1.81". Plenty of options if your just looking for stock replacement pistons, but not much with a taller compression height.

I ran a ported set on my car for years with a edelbrock performer & a weiand action plus manifold. Block the coolant passages as per post #4 and your good. I also ran coolant through the manifold for a while at the start but it eventually leaked and dropped some coolant in the oil. No leaks...

Mine: Purple CL I sold a while back, white CM running a solid cammed 265 with tripple Webber's and a VF hardtop project.

Around 1/8" is normal

All these parts are available for the 318.... Doesn't really cost any more to build a 318 vs a 360 or 340 - might run you a $100 or so more for the pistons but if that's gunna break your budget then you shouldn't be trying to build a motor. People build 318s because they already have them...