Big stock cube cams (Trex, MS3/4, etc.,) in strokers (400"+)
12-01-2006, 06:50 PM
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Big stock cube cams (Trex, MS3/4, etc.,) in strokers (400"+) How do the big cams that you guys are putting in stock cube motors running in a stroker? Does it kinda make those big cams small cams? Just curious if anyone was running like a 403 LS2 with an MS3, MS4, Trex?
12-01-2006, 10:41 PM
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I know someone that went from an LS2 to a 402 with an MS4 in both. The cam istn too big to begin with but a lot more taming in larger cubes. The larger cubes make up for the lost torque that big cames offer in smaller cubes.
12-01-2006, 11:23 PM
#3
Exactly. You don't need to overcam a big engine to make big power. An MS4 or T-Rex would be pretty good cams in a 402 for example with a FAST 90. The FAST restricts the peak torque to 4800 and the peak horsepower to 6300-6400. The VEs for that means an IVC (intake valve closing) of around 50 degrees at .050" on a 402 will make the best power under the curve while delivering an awesome peak.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
12-02-2006, 12:12 AM
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Originally Posted by JakeFusion™
Exactly. You don't need to overcam a big engine to make big power. An MS4 or T-Rex would be pretty good cams in a 402 for example with a FAST 90. The FAST restricts the peak torque to 4800 and the peak horsepower to 6300-6400. The VEs for that means an IVC (intake valve closing) of around 50 degrees at .050" on a 402 will make the best power under the curve while delivering an awesome peak.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
Well said words of wisdom and I agree 100%
12-02-2006, 10:00 AM
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search is your friend 
I asked the same question (sort of) almost 2 years ago.
https://ls1tech.com/forums/generation-iii-internal-engine/277458-not-your-everyday-cam-question-regarding-big-motor-small-cam.html
https://ls1tech.com/forums/generation-iii-internal-engine/280975-408-stroker-guys-inside-please.html
I asked the same question (sort of) almost 2 years ago.https://ls1tech.com/forums/generation-iii-internal-engine/277458-not-your-everyday-cam-question-regarding-big-motor-small-cam.html
https://ls1tech.com/forums/generation-iii-internal-engine/280975-408-stroker-guys-inside-please.html
12-02-2006, 10:24 AM
#7
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Yeah, jake has it on the money, I run a 232/234 113 49 IVC in my 370cid and the numbers speak for themselves. 6200 peak (carries to neverland) and 4800 trq peak
(Ported BBK/80mm modified LS6)
(Ported BBK/80mm modified LS6)
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12-02-2006, 10:33 AM
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Originally Posted by JakeFusion™
Exactly. You don't need to overcam a big engine to make big power. An MS4 or T-Rex would be pretty good cams in a 402 for example with a FAST 90. The FAST restricts the peak torque to 4800 and the peak horsepower to 6300-6400. The VEs for that means an IVC (intake valve closing) of around 50 degrees at .050" on a 402 will make the best power under the curve while delivering an awesome peak.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
The T-Rex offers an IVC of 49 and the MS4 offers an IVC of 48.5 degrees as both offer 2 degrees of advance ground in. So, they will peak a little earlier than 6300. But, you have a good match to your intake for the given CID.
The MS3 on a 113 with no advance has an IVC of 51.5, which is also very good. Because it's a little smaller duration wise, it will still make the torque with the higher IVC (also due to the EVC or exhaust valve closing). I actually like the MS3 as a very good overall power cam for a 402. I've seen 515rwhp 495rwtq out of small port headed 402s with the MS3. I don't know about you, but some of the huge cammed, huge ported heads are only around 520-530rwhp with 460-470rwtq. I'd gladly give up 5-10rwhp at peak for another 30rwtq everywhere below 5500.
