5.3 stroker build- 243 vs 706

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11-20-2012 | 11:52 PM

#11

damullen05silverado5.3

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Quote:

Originally Posted by Jake@Texas-Speed

If staying with a stock cylinder head setup, I would recommend going with the 243s. As for your camshaft, it would really depend on the rest of your setup. What size converter do you plan to run with that combination?

What would you recommend for a gasket size or milling for keeping the compression the same if not better?

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11-20-2012 | 11:55 PM

#12

dmelvin

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From: Rock Port, MO

Quote:

Originally Posted by damullen05silverado5.3

The truck is a crew cab with 3.73 gears I think. I know ill have to do something with the rear end because its a locking one and I could see the locker snapping one day. Do you think ill run into problem having a cam meant for a six speed with 4.10 gears while still having the four speed with 3.73 gears?

Power is power, and being in the power band is where the key is to choosing a cam. A motor that produces 350HP @ 6200 RPM in first, is going to produce 350HP @ 6200 in Fifth as well. What you'll need to decide (Especially for a DD) is where in the RPM range you're going to be doing most of your driving. If you throw too big of a cam in, and then a 6 speed, it's going to be a dog in those higher gears as the RPMs drop, which is why throwing a set of 4.10's or 4.56's will help you there.

As far as the heads, I'd spend the money on the 243's. The extra flow will help feed those extra cubes.

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