people tell me my cam sucks for my 383 Why???
05-08-2012, 10:59 PM
#1
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people tell me my cam sucks for my 383 Why??? hello everyone can someone explain to me why my camshaft sucks for my 383 stroker? i have stock ported heads...they say its too mild but i dont see how? thanks for any advice![IMG]
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05-09-2012, 02:04 AM
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05-09-2012, 06:33 AM
#7
The larger the motor is, the more cam you can have in it without being "cranky". So what was considered extreme on a 346 LS1 such as a T-rex or MS4 may seem tame if you stick it in a 408.
If I was building a N/A 383 the LSA would be in the 109-110 range easy and go from there.
Blower cams will give you a laggy feeling BUT that can be helped with a properly spec'ed TQ converter or if its a 6 speed car, putting 4.30's or a M12 trans.
If I was building a N/A 383 the LSA would be in the 109-110 range easy and go from there.
Blower cams will give you a laggy feeling BUT that can be helped with a properly spec'ed TQ converter or if its a 6 speed car, putting 4.30's or a M12 trans.
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05-09-2012, 08:36 AM
#8
You could run a tighter lsa to get the power coming in sooner, and a little more exhaust duration.....lift is up to you.....if you go higher lift you can make more power, but it will be harder on your valvesprings.....with the lift you have now you could run a good set of beehive springs for years and years and not have any wear on them, but once you get over .600" lift you need a heavier set of springs and need to check spring pressure every 10-12k miles, and maybe replace them.
The larger cubes do really eat up duration.....I'm running a 255/263 .624/.624 115lsa in my 408 and it has pretty good street manners, but pulls all the way up to my 8,000 fuel cut.
The larger cubes do really eat up duration.....I'm running a 255/263 .624/.624 115lsa in my 408 and it has pretty good street manners, but pulls all the way up to my 8,000 fuel cut.
05-09-2012, 08:54 AM
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I've been looking for a cam to start me a pile of parts. I have a 96 SS Lt1 any info is much appreciated as I don't know anything about engines, and I don't know anyone who knows anything either. Please and thank you 
05-09-2012, 10:48 AM
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The larger the motor is, the more cam you can have in it without being "cranky". So what was considered extreme on a 346 LS1 such as a T-rex or MS4 may seem tame if you stick it in a 408.
If I was building a N/A 383 the LSA would be in the 109-110 range easy and go from there.
Blower cams will give you a laggy feeling BUT that can be helped with a properly spec'ed TQ converter or if its a 6 speed car, putting 4.30's or a M12 trans.
If I was building a N/A 383 the LSA would be in the 109-110 range easy and go from there.
Blower cams will give you a laggy feeling BUT that can be helped with a properly spec'ed TQ converter or if its a 6 speed car, putting 4.30's or a M12 trans.
05-09-2012, 10:56 AM
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You could run a tighter lsa to get the power coming in sooner, and a little more exhaust duration.....lift is up to you.....if you go higher lift you can make more power, but it will be harder on your valvesprings.....with the lift you have now you could run a good set of beehive springs for years and years and not have any wear on them, but once you get over .600" lift you need a heavier set of springs and need to check spring pressure every 10-12k miles, and maybe replace them.
The larger cubes do really eat up duration.....I'm running a 255/263 .624/.624 115lsa in my 408 and it has pretty good street manners, but pulls all the way up to my 8,000 fuel cut.
The larger cubes do really eat up duration.....I'm running a 255/263 .624/.624 115lsa in my 408 and it has pretty good street manners, but pulls all the way up to my 8,000 fuel cut.
05-09-2012, 11:03 AM
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05-09-2012, 11:04 AM
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05-09-2012, 11:06 AM
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05-09-2012, 11:50 AM
#20
Single pattern is like a 224/224, 228/228, or this cam, a 240/240...a split, or dual pattern has more exhaust duration like a 220/224, 228/232....a reverse split pattern has more intake duration, like a 228/224.