how much power from ms4 and 383
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From: Newberg Oregon
how much power from ms4 and 383 this might be a question for texas speed but im getting a 383 with a ms4 cam and i already have LT's ory magnaflow muffler ls6 intake ported TB lid and K&N what kind of numbers do you think ill be making its an 01 ws6
Thanks Brandon
Thanks Brandon
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From: Newberg Oregon
sorry stock heads with an m6 and i think the compression will be 10.6:1, UD crank pulley, stock 3.42 10 bolt, textrailia clutch if that matters ws6 with functional ram air, ill get a ls2 timing chain, ls6 oil pump and also prc dual spring valve springs. If there is anything else im forgetting tell me
Thanks Brandon
Thanks Brandon
I would venture to say you will prolly be around 450ish rwhp but your torque curve will be alot nicer than with a 346. Seems like most people say that having a stroker adds some power but adds alot of torque
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383's seem to only really shine with some good aftermarket heads. Do what you have to, but dont do a 383 unless you have future plans on getting some good 225 small bore heads. Also, if you are dead set on the MS4 cam, it wont do too bad at all, but I am sure that TSP would inform you to run a cam more based upon the head choice and a 113 or 114 LSA, which is a bit more suitable for the 383. Ofcourse these are just my opinions that I am shooting out to ya.
Good-luck
Good-luck
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From: Newberg Oregon
thanks guys heads are in my near future but money doesnt seem to be. Im swapping my short block and figuered i'd try getiing a few more ponies and a cam is easier while the engine is out heads are easy to do in the car so they can wait for now
MS4 is actually a better choice for a 383 than a 346... The valve events are perfect for a 383 with an LSx-style intake.
With AFR 205s or TFS 215s and a FAST90 combo, you could easily see 490rwhp out of the combo.
With AFR 205s or TFS 215s and a FAST90 combo, you could easily see 490rwhp out of the combo.
No. It'll still peak ~6200-6300. The manifold restricts the peak on these engines. You can go really late on the IVC to get maybe 6500, but with the LSx-style manifolds, you are really trying to hit the sweet spot of 6300 RPM HP peak and 4800 RPM TQ peak.
If your cam hits the sweet spot, then you'll optimize power under the curve without needing to advance the cam. When you advance the cam, you'll kill power after peak, which is not what you'd want if you want to carry your HP out to say 6800 or 7000 RPM.
The huge 346 cams, T-Rex, MS4, and G5X4, all carry power out longer, because they have such a late IVC for the 346. But, going with the proper valve events will give you the power under the curve and the ability to carry the power out longer. Plus, the LSK lobe on the intake of the MS4 is known to carry the power out longer due to the better curtain area (lift at .200" is better than comparable XE-R or XFI lobes).
If your cam hits the sweet spot, then you'll optimize power under the curve without needing to advance the cam. When you advance the cam, you'll kill power after peak, which is not what you'd want if you want to carry your HP out to say 6800 or 7000 RPM.
The huge 346 cams, T-Rex, MS4, and G5X4, all carry power out longer, because they have such a late IVC for the 346. But, going with the proper valve events will give you the power under the curve and the ability to carry the power out longer. Plus, the LSK lobe on the intake of the MS4 is known to carry the power out longer due to the better curtain area (lift at .200" is better than comparable XE-R or XFI lobes).
