1.5 to 1.6 ?

[j par]

I'm using stock 273 rockers. 410 stroker. 596 heads. Going roller rockers and thinking more bang for my buck !?? But....... Besides piston to valve clearance is there any other things that should be considered ? Thank you ...

 

[Bad Sport]

Geometry.

 

[JBurch]

What he said x2

 

[twayne24365]

Pushrod clearance... We had to grind on the head for the pushrods to clear on our motor

 

[70aarcuda]

http://www.hughesengines.com/TechArticles/16pushrodtoheadclearance.php

short memo on pushrod clearance.....

Got 4 engines running with 1.6 rockers....did not clearance any of them....all with eddy heads plus one engine use 3/8 diameter pushrods while the other 3 use 5/16

 

[hangn0ut]

Keep the iron setup for backup just in case.

 

[j par]

http://www.hughesengines.com/TechArticles/16pushrodtoheadclearance.php

short memo on pushrod clearance.....

Got 4 engines running with 1.6 rockers....did not clearance any of them....all with eddy heads plus one engine use 3/8 diameter pushrods while the other 3 use 5/16

That was a great read on the subject, and thank you for your experience. And everyone else who chimed in, thank you.....the thing is I just don't want to spend another 5 $600 + to create more problems for not a lot of return as opposed to just getting a bigger cam. So I'm going to keep scratching my head and trying to think about it.

 

[360duster]

Hi, i bought a set of 1.6 Rockers for my 408 last winter, got the mancini brand rockers (Harland Sharp bodys without needle bearings). They work great, engine is significantly stronger, went from 11.98 to 11.61 without other modifications - believe it or not. Of course, this tells me that the engine want´s more cam, but Bang for the buck was great.

Michael

 

[j par]

Hi, i bought a set of 1.6 Rockers for my 408 last winter, got the mancini brand rockers (Harland Sharp bodys without needle bearings). They work great, engine is significantly stronger, went from 11.98 to 11.61 without other modifications - believe it or not. Of course, this tells me that the engine want´s more cam, but Bang for the buck was great.

Michael

Thank you for your experience ! 4 tenths ! That's awesome ....

 

[Woods74]

Shoulda got a Magnum. 1.6 is stock.

 

[j par]

Shoulda got a Magnum. 1.6 is stock.

I have a magnum motor in my Durango. I don't want a magnum motor in my race car. And also I don't like the Chevy style Rockers that are on the magnums.

 

[70aarcuda]

I have a magnum motor in my Durango. I don't want a magnum motor in my race car. And also I don't like the Chevy style Rockers that are on the magnums.

hughes makes shaft rockers for magnum heads...........

 

[j par]

hughes makes shaft rockers for magnum heads...........

I think poison dart 74 has made this thread take a left turn! Lol

 

[Woods74]

Nothing wrong with a magnum race engine!

BUT

You've got the old stuff, so you've got pros and cons.

 

[D-50394]

I was running a stock 2000 360 magnum with a .501/.513 hydraulic roller and M1 intake 950 holley with really bad block hugger headers and ran a best of 7.27 @ 95 mph in the 1/8 at 2950 lbs.

 

[j par]

Ooooookey - post your best magnum combination !!??

 

[Woods74]

Look on the dakota-fourms. I've seen some pretty stout 10 second 1/4 milers in 4300lb vehicles on there. Asking here is like asking the ugly kid to prom. Although LXguy and JoeDust451 are good examples of junkyard builds...

 

[j par]

^^^^ there's a section on here called magnum swaps, I think you'd like it..
i do get your messing with me, and you have to know there's no way I'll be abandoning my la stroker for a magnum.

 

[D-50394]

I don't blame you for that. I built a pump gas 394 ci 340 block and replaced the magnum motor. I went from a 7.27 to a 6.21 in the 1/8.