Thread: PM,s 308 project

ahhh the screamer 308 lives!

Can I say I'm mildly disappointed that you're not working over the 4V's you have stashed under the bench and dropping them on a little windsor.....but I'll get over it

Looking forward to this one Pete.

Originally Posted by HPE PETE

the one thing i know for sure is there will be no dual plane intake......oh and the roller, unfortunately the roller is just not in the budget, but just cause it wont have a roller doesnt mean it wont be a big stick, going to see what rockers i can fit in there, the bigger the ratio the better LOL

Praise be to god its not gonna be a dual plane, or I will drive to Capalaba and I may strike you ... Use the 1.73:1 cleveland rockers and do a big flat tappety with some lift on it ...

Originally Posted by HPE PETE

well this is also a good gesture tim.....can u imagine a HQ headed engine in a VS.

this thread could end up turning in to a possibility for doing deals......LOL

one thing is if i sell the complete engine or top end only who ever buys it will inherit some valuable R&D as these heads will have every bit of early holden cylinder head development, R&D and experience i have to date put in to them

Let me know if ya want the vn heads mate. And yeah, old heads on a screaming 308 in a vs ute would baffle alot of people....

Hell yeah I'm subscribing !

Decisions decisions lol. If alloy rods you would turn it real hard so 4 bolt conversion. Buying custom pistons for a 60 up bore would be mad. If you decide to sell bottom end a 20 or 30 up would sell where a 60 one might struggle?
As you can use a mates car I would use the 30 up tri block with the vn rods and a hyper piston.
If you use the ally rods what would you turn it too? Would a 2 bolt hold up?

Lets get the cam specs rolling. What are you thinking of using.

Sounds like a great project !

Personally I love this sort of stuff, I would keep it dirt cheap..... A9L's hyper pistons, dirty flat tappa and a fist full of RPM !

JMO of course !

Originally Posted by paulzig

Praise be to god its not gonna be a dual plane, or I will drive to Capalaba and I may strike you ... Use the 1.73:1 cleveland rockers and do a big flat tappety with some lift on it ...

thats the plan paul, can anyone tell me the fulcrum length on a clevo rocker as i dont have any in the shop ATM to measure....that would be perfect.

looking at the T&D catalog it says a pontiac rocker and LS rocker have a 1.450 fulcrum length.....but this is for a shaft rocker and im not sure if the bolts for the pedestal are inline with the rocker shaft bolts so i dont think its useful information, if i could use the LS rocker i could buy a cheap set of 1.8 rockers for the intake side and 1.7 for the exhaust........but if a clevo rocker works out i could just adjust lift with the lobes, im sure i have trial fit BBC rockers on a holden and it didnt work out, will do some measuring through the week....

as far as the bottom end goes i know its basicly worthless if it is .060 over, but if somebody wanted a base engine to start with to go racing as a complete package it would be fine untill it needs a re bore, then is would just need another short, the value lies in in the cylinder heads and this is one area where this engine would not be cheap to replicate, i could always just keep the bottom end and sell the top end as i dont really have a prob with having a .060 test mule, basicly i want to have a few races then sell what i can to help buy some other bits for a good engine ( keeper ), im thinking if i do the .060 block it will be the VN rods and a set of hypers.

one of the reasons for the ally rods was because i still have to buy rod bolts and get the rods re sized for the VN rods and thats going to cost a couple of hundred, if i did the .030 block i would consider the ally rods and custom piston but then the cost goes up and i may as well put that money in to the good engine

if the .060 block is used it will most likely end up with the VN rods and hypers, atleast if i use the .060 block and VN rods i am using stuff that is lying around and has no other real use but if i use the .030 block the resale for the whole engine would be better

cam wise, if i had to use a shelf cam i'd put a crane 300 in it, it will use comp lobes something close to the 300 but maybe a little bigger it will also depend on what rocker ratio i can use, if i could use a bigger converter id even go a big ole 270's flat tapper but if i can get some lift in to it i will have enough area to make the power without throwing a lot more duration at it......the other thing is how much rpm will a hyper take before the crown parts ways with the skirt....LOL

if its a .060 over block who cares no real loss, we wont do a whole lot to the block but we will do a couple of mods to try and keep the flat tappet alive maybe even a tray to go under the cam

watching- with interest.

ive got a 253 crank, you pay postage and it yours.