67autocross
A new iron curtain drawn across the 49th parallel
I was at my friends shop and he give me a new cam... should I use it and what would be a good combo to build with it...
Free cam build...
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You're gonna need a LOT of motor for that. A WHOLE lot.
SSG_Karg
Enhanced member
11:1 340
Holley 750DP, Strip Dominator, Speedmaster heads, headers, 3500 converter or 4 spd, 3.91 rear, 26” tire. Run 93 octane and sneek up on the timing.
Let it eat.
Holley 750DP, Strip Dominator, Speedmaster heads, headers, 3500 converter or 4 spd, 3.91 rear, 26” tire. Run 93 octane and sneek up on the timing.
Let it eat.
Got W2?
67autocross
A new iron curtain drawn across the 49th parallel
Free cam= budget build!
SSG_Karg
Enhanced member
You’re right. 4 speed it is then!
From the Crane master catalog
Good upper RPM torque and HP,moderate competition only, bracket racing, 360+ cu.in., auto trans w/3000+ converter, 12.0 minimum compression ratio advised.
Good upper RPM torque and HP,moderate competition only, bracket racing, 360+ cu.in., auto trans w/3000+ converter, 12.0 minimum compression ratio advised.
67autocross
A new iron curtain drawn across the 49th parallel
They still sell this thing...it looks like it’s from the 80’s
While it may be an outdated grind an all, I bet it would still haul *** in a 400 plus inch W2 stroker with 11.5:1 or better compression. You can still get the valve springs for that cam, too.
512Stroker
We are all here because we are not all there.
Moderate competition only, power from 4400-7600 rpm, valve float at 8000. Definitely a happy four speed cam with 5.13:1 or better gears.
67autocross
A new iron curtain drawn across the 49th parallel
Well I do have a new 4 inch stroke 340 forged crank sitting on the shelf...
67autocross
A new iron curtain drawn across the 49th parallel
https://www.forabodiesonly.com/mopar/threads/old-school-340-build.368435/
I will likely use it to replace the 340 we built for my purple scamp that we ran Drag Week with a few years back...
I will likely use it to replace the 340 we built for my purple scamp that we ran Drag Week with a few years back...
It'll be miserable on the street... been there.
Don't build a car/motor around a cam, pick a cam for your car/motor combo and intended use..
Don't build a car/motor around a cam, pick a cam for your car/motor combo and intended use..
Krooser
Building Chinese Free Engines since 1959...
Thats one of the cams that was on my list for my dirt car’s engine redo....
Sell it or regrind it. Get what you want.
67autocross
A new iron curtain drawn across the 49th parallel
I done that a bunch of times...this time I thought it would be interesting to start with the cam and build backwards...
67autocross
A new iron curtain drawn across the 49th parallel
This is not really about what I want for any particular purpose...it’s just about building an engine around a free cam and l will post the build from cam shaft to the dyno...
If it’s a 340, it needs good heads, good rocker gear with geometry corrected, and at least 12-1/2:1 compression, 1-3/4 headers and 340 Victor with an 850-930 cfm carb.A tunnel ram with a pair of 4150 750s would really make it shine. It would be an interesting test rig to compare an M1 tunnel ram to an older edelbrock TR5 and a Weiand TR.
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PRH
Well-Known Member
I put one of those in a 446 bracket motor 30 years ago.
It was “okay”.
I didn’t love it....... and was never tempted to use it again........ but it wasn’t terrible.
It was “okay”.
I didn’t love it....... and was never tempted to use it again........ but it wasn’t terrible.
67autocross
A new iron curtain drawn across the 49th parallel
I put the call out last night to my local Mopar friends to find me a 340 block as I already have a new 4 inch stroker crank sitting in the shop doing nothing...
so we could do a 416 inch build...or a stock stroke 340...or I could hunt down a 360 block...what do you guys think?
That’s a terribly lazy lifter rate for a solid cam, much less one that uses the Mopar .904 lifter. There are a handful of barely streetable solid lifter cams with that much lift (and several with less lift) that would make much more power all the way across the curve.
67autocross
A new iron curtain drawn across the 49th parallel
67autocross
A new iron curtain drawn across the 49th parallel
I’m 100% sure that much better cams exist and could be ordered...just like a few years ago when I did my “ old school 340” build I used a crane 691191 that I had already in it ...everyone said get a new cam...
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