dartfreak75
Restore it, Dont part it!
I dont think that is the best book out there imo! I have it and has some info but not alot of in depth detail. If your looking for a step by step stroker build look elsewhere.
318 Stroker Build
- Thread starter jakuzzie
- Start date
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That's a HR magazine article for a 400 horse 318. I have a couple Small block books and one stroker book. Yep.
dartfreak75
Restore it, Dont part it!
Oh sorry Mike I thought it was the how to hotrod a small block mopar book by Larry Sheppard. I saw someone recommending it.
Yep, I have that one too. Probably the best stroker book. Jim is a Engineer for Chrysler Corp.
ir3333
Well-Known Member
i agree,I know of a few 408's with x or j heads and decent cams that don't get near 300 hp at the rear wheels but make a lot of torque.A stroked 318 will have to be well built to get 300 hp at the rear wheels.
I could be wrong but i don't think 440's got 300 hp at the rear wheels.
Strokers need big air in, big air out. Heads are the key. I DD'd a 390 with a mild aluminum intake and HP exhaust manifolds. A low duration/500 lift cam and got 350 horse and 450+ torque. You can build them to the max or fairly mild with good results.
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stixx
Well-Known Member
IIRC that's the one I showed in my graph.
pishta
I know I'm right....
Damn, did the math on a blueprint 9.60 deck block and those 399's will only be .128 out of the hole (dome only) on a 4.00 stroke crank..Really? Can someone confirm that? Skirts would be more of an issue unless the stroker crank has shorter counterweights. Bore notching for the rod nuts is a gives as even the 4.00 needed a little kiss with stock rods and a 4.00. Check your piston height with those pistons in your 318 and tell us how deep in the hole they actually sit with a caliper to the top of the dome. Interesting......
6.123 rod
1.655 stroke off cl (half of 3.31) <<WRONG STROKE>>>
1.810 compression height
0.140 dome
- 0.060 head gasket
----------------------
9.668
-9.600 deck
----------------------
+ .068 out of the gasket. if the dome fit the chamber.....Get some big cc 360 heads...
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stixx
Well-Known Member
TMM, I gave you an even 14000 likes. 
dartfreak75
Restore it, Dont part it!
I'll return the favor and give you 103 lolTMM, I gave you an even 14000 likes.
nm9stheham
Well-Known Member
Mmmmmm... not what I get. I show the CH being .333" above deck and the dome even higher. I just fit a 4" stroke crank in small block and the stock height pistons stuck out around that far, with no dome.
Not a viable plan, IMHO.
nm9stheham
Well-Known Member
With the OP's pistons, then it works out to 9.6 SCR with stock 318 heads (675's) and standard Felpro head gaskets. If he changed to the 360 heads, and changed to the Mr Gasket 1121G head gaskets, then he would maintain that nice 9.6 SCR, and have the better head breathing he needs to get to 300+ HP.
Using EQ heads would push the SCR waaaaay up into the 11:1 SCR range, and that will not work with a cam that will give a smooth idle. So one of the factory open chamber heads with 72-73 cc chambers looks like the ticket IMHO. A cam like the Voodoo 10200703, with a 271 advertised duration, would give a DCR of 7.8. That seems like pretty good territory for this app. I think the OP will hit 300+ HP easy-peasy.
Using EQ heads would push the SCR waaaaay up into the 11:1 SCR range, and that will not work with a cam that will give a smooth idle. So one of the factory open chamber heads with 72-73 cc chambers looks like the ticket IMHO. A cam like the Voodoo 10200703, with a 271 advertised duration, would give a DCR of 7.8. That seems like pretty good territory for this app. I think the OP will hit 300+ HP easy-peasy.
pishta
I know I'm right....
WTF? I used a stock crank!!!
no wonder it didnt sound right....
dartfreak75
Restore it, Dont part it!
Lol I figured it up too and our numbers wasnt matching. The icon pistons are the way to go with a 4 inch imo.WTF? I used a stock crank!!!
I agree with nm9stheham a 360 head would be the way to go here.
What do you think about those heads?
Zylinderkopf Set SBM 360-X Indy, Paar, mit 2,02″ Ventilen
Zylinderkopf Set SBM 360-X Indy, Paar, mit 2,02″ Ventilen
dartfreak75
Restore it, Dont part it!
I cant read whatever language that is in? What are the combustion chamber cc?
dartfreak75
Restore it, Dont part it!
That is gonna be high high compression with those heads I will run the numbers brb.
dartfreak75
Restore it, Dont part it!
It will be around 11:1 with 3.31 stroke!
dartfreak75
Restore it, Dont part it!
Not to mention it takes alot of work to fit those 2.02 valves on a 318 those heads would not simply bolt on.
stixx
Well-Known Member
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stixx
Well-Known Member
That has been discussed infinite times... 
You have good gas available in Austria (Super?) so you can aim a little higher --> 9.5-ish?
But it also very much depends on the chosen cam and your skills in tuning (ignition).
I'll let the experts chime in.
You have good gas available in Austria (Super?) so you can aim a little higher --> 9.5-ish?
But it also very much depends on the chosen cam and your skills in tuning (ignition).
I'll let the experts chime in.
nm9stheham
Well-Known Member
The 9.5 + or - range for CR is good for a small cam that will have a smooth idle. Either of the heads listed above will be 62 cc chambers and that will raise the CR to 11:1 and that is far, far too high for a small cam with a smooth idle.
OP, can you find or get some of the factory heads for a 360? Or is it difficult to get those original parts in Austria? Is it hard or costly to get some shipped from the USA?
OP, can you find or get some of the factory heads for a 360? Or is it difficult to get those original parts in Austria? Is it hard or costly to get some shipped from the USA?
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