Stroker vs. Heads cam car ?
#1
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Stroker vs. Heads cam car ?
Let me try to make this question as short as possible. Why not buy a 383 stroker kit instead of going the heads , cam, headers route? I will be paying the labor for whichever I do.
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If you go the stroker route, your not gonna get anywhere near it's full potential without including better flowing heads and a cam...so you want to figure in h/c/headers when you build a stroker (or any hi-performance rebuild for that matter). I am curious though how much more power you would get with the extra displacement of a stroker...all else being equal.
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A stock LS1 makes approximately one horsepower per cubic-inch at the flywheel. Since the displacement increase to 383 is only about 10% it is reasonable to expect a linear increase. Therefore 37 extra cubes should produce an extra 37 hp or so. Assuming 85% drivetrain efficiency you can expect rwhp would increase from 297 to 326. There are much less expensive paths to this sort of gain.
-Gary
-Gary
Last edited by Gary Z; 11-12-2003 at 06:05 PM.
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Originally Posted by CANNIBAL
Let's not forget the best reason for bigger cubes = more area under the curve. Sure and H/C car may have more PEAK HP/TQ but the stroker will kill it it HP/TQ in the area under the curve.
Respectfully, Gary
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#8
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Originally Posted by Gary Z
Please tell us that you a not saying that a 383 stroker with stock heads and cam will “kill” a heads/cam/headers 346.
Respectfully, Gary
Respectfully, Gary
#10
I am the man that you speak of putting Stock heads on a stroker!! LOL! You ask why in the hell would I do that?
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
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TQ is more important than HP. I bet a stroker with stock heads and a cam will make more TQ, have a much better TQ band, and out run a H/C car. Remember our heads are pretty good. They flow better than many of the old school after market heads. Plus you could keep the RPM's down with a stroker. Finally, there are two ways to go. 1. Stock bore + Stroker crank = 383. Stock stroke+ larger bore = 388. If I am wrong, please show me the light.
#13
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Originally Posted by 00BlacknWhiteSS
I am the man that you speak of putting Stock heads on a stroker!! LOL! You ask why in the hell would I do that?
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
#14
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Originally Posted by 00BlacknWhiteSS
I am the man that you speak of putting Stock heads on a stroker!! LOL! You ask why in the hell would I do that?
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
The main reason I did this is because I felt that I could always build on a bullet proof shortblock later on when I had more money. I am a broke *** college student who couldn't afford at the time the 3000 dollar stage III heads that this motor needs. So what kind of numbers did I get?
With stock LS1 intake, TB, Pulley, I put down 420RWHP and 440RWTQ. The heads were MILDLY ported by hand on the intake and exhaust ports, but I still consider them stock though. I was fairly suprised by these numbers.
My setup:
408 stroker w/ Iron Block.
6.0L Heads
230/236 cam
Thought that these numbers could help ya'lls discussion.
Rusty
#16
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"TQ is more important than HP."
Neither is more important than the other since they are directly related...they are the same thing in a sense. HP is a mathematical calculation of work performed that is derived DIRECTLY from TQ (force) and RPM (distance.) TQxRPM/5252=HP A given TQ at a given RPM will always be a given HP regardless of what is making it. If you change one, you change the other. Tell me the TQ and the RPM and I can tell you the HP. Likewise, tell me the HP and the RPM and I can tell you the TQ. See the link?
So, HP IS TQ...that is at work.
Sorry, this whole TQ v/s HP (there should be no such thing as "v/s" in regards to TQ and HP) is one of my pet peeves.
Neither is more important than the other since they are directly related...they are the same thing in a sense. HP is a mathematical calculation of work performed that is derived DIRECTLY from TQ (force) and RPM (distance.) TQxRPM/5252=HP A given TQ at a given RPM will always be a given HP regardless of what is making it. If you change one, you change the other. Tell me the TQ and the RPM and I can tell you the HP. Likewise, tell me the HP and the RPM and I can tell you the TQ. See the link?
So, HP IS TQ...that is at work.
Sorry, this whole TQ v/s HP (there should be no such thing as "v/s" in regards to TQ and HP) is one of my pet peeves.
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Thanks for the help. Once again it's just a matter of how much $$$ I need to spend. I guess I'll stick with the headers/cam for now. Will I be able to use the same cam , pushrods, springs ect, If I do decide to stroke it?