Which heads have a better discharge coefficient? TFS 235's or mast small bore ls3's
#81
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That is really interesting...
Especially the Fast intakes - you can easily see the AFR heads had peaked and the GMPP LS3 heads were still climbing. Revving higher would even further separate them.
And your point is well-made. AFR 230 are phenomenal cathedral heads, and you've got guys like Martin that hate the GMPP LS3 heads
Wait, wait, wait, cathedral heads are better. Bad Darth! Can't let data and information get in the way of a good opinion
Especially the Fast intakes - you can easily see the AFR heads had peaked and the GMPP LS3 heads were still climbing. Revving higher would even further separate them.
And your point is well-made. AFR 230 are phenomenal cathedral heads, and you've got guys like Martin that hate the GMPP LS3 heads
Wait, wait, wait, cathedral heads are better. Bad Darth! Can't let data and information get in the way of a good opinion
#82
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Cathedral heads are good. I just don't think the plastic intakes can keep up to a really good cathedral head. Not sure on the msd yet as I haven't seen any ported flow numbers. But a ported fast can't flow near what a good cathedral head can.
Fast intakes are good but they really
Homogenize head test results as they're generally the weakest link IMO
Fast intakes are good but they really
Homogenize head test results as they're generally the weakest link IMO
#83
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Cathedral heads are good. I just don't think the plastic intakes can keep up to a really good cathedral head. Not sure on the msd yet as I haven't seen any ported flow numbers. But a ported fast can't flow near what a good cathedral head can.
Fast intakes are good but they really
Homogenize head test results as they're generally the weakest link IMO
Fast intakes are good but they really
Homogenize head test results as they're generally the weakest link IMO
On the street, cathedral heads are great. I'm not saying they suck. I'm just saying when you see that separation in the dynos start at 6500 and just grow, it shows how much the larger CSA rectangle heads really shine at higher RPM. Edit - imagine a good aftermarket LS3 head like the mast or AFR 260 on those dynos below...
#84
Cathedral heads are good. I just don't think the plastic intakes can keep up to a really good cathedral head. Not sure on the msd yet as I haven't seen any ported flow numbers. But a ported fast can't flow near what a good cathedral head can.
A ported Fast intake flows like what 340 to 350 cfm and a Decent pair of Cathedrals flow what 340 to 350 cfm. And it can't flow near a TFS/AFR/Mast cat head? How about a Ls3 head that flows 370 to 390 cfm...... to disparaging to even think of. Let's not even speak of a Ls7 head in which flow is in the 400 cfm realm.
#86
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.
A ported Fast intake flows like what 340 to 350 cfm and a Decent pair of Cathedrals flow what 340 to 350 cfm. And it can't flow near a TFS/AFR/Mast cat head? How about a Ls3 head that flows 370 to 390 cfm...... to disparaging to even think of. Let's not even speak of a Ls7 head in which flow is in the 400 cfm realm.
A ported Fast intake flows like what 340 to 350 cfm and a Decent pair of Cathedrals flow what 340 to 350 cfm. And it can't flow near a TFS/AFR/Mast cat head? How about a Ls3 head that flows 370 to 390 cfm...... to disparaging to even think of. Let's not even speak of a Ls7 head in which flow is in the 400 cfm realm.
#87
As the little girl from Memphis with JJ Da Boss would say, " off with there heads! Speaking of cathedral heads. LMAO!
Big Hammer
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I thought I seen or read that a ported Fast flowed near 320 to around 340 with a ported aftermarket 102 intake?
Big Hammer
Last ported cathedral fast I seen tested flowed around 285-290 ish. Maybe some guys are getting a lot more depending on the depth of the port job
I thought I seen or read that a ported Fast flowed near 320 to around 340 with a ported aftermarket 102 intake?
Last edited by Patron; 08-01-2017 at 11:26 AM.
#88
A few intakes.
https://ls1tech.com/forums/generatio...w-numbers.html
https://www.corvetteforum.com/forums...w-results.html
Looks like your right in saying a ported 102 for cathedral heads flow like in the 290 range @ peak.
https://www.corvetteforum.com/forums...w-numbers.html
https://ls1tech.com/forums/generatio...w-numbers.html
https://www.corvetteforum.com/forums...w-results.html
Looks like your right in saying a ported 102 for cathedral heads flow like in the 290 range @ peak.
https://www.corvetteforum.com/forums...w-numbers.html
#89
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A few intakes.
https://ls1tech.com/forums/generatio...w-numbers.html
https://www.corvetteforum.com/forums...w-results.html
Looks like your right in saying a ported 102 for cathedral heads flow like in the 290 range @ peak.
https://www.corvetteforum.com/forums...w-numbers.html
https://ls1tech.com/forums/generatio...w-numbers.html
https://www.corvetteforum.com/forums...w-results.html
Looks like your right in saying a ported 102 for cathedral heads flow like in the 290 range @ peak.
https://www.corvetteforum.com/forums...w-numbers.html
#90
Yea I'm past any of this I've just got a few questions I would like answered, Peak Performance is at the top of the pecking order with their stock 102 Ls7 intake. Also sent Mr. Roddy a message about how much RPM he's turning. I'm just ready to show some video's of some Crazy stuff also (like 750+ fwhp and trying for low 9's which is crazy with Factory block and heads). I just Need More $. All the major Spending is over.
Last edited by Patron; 08-01-2017 at 01:21 PM.
#91
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Yea I'm past any of this I've just got a few questions I would like answered, Peak Performance is at the top of the pecking order with their stock 102 Ls7 intake. Also sent Mr. Roddy a message about how much RPM he's turning. I'm just ready to show some video's off some Crazy stuff also (like 750+ fwhp and trying for low 9's which is crazy with Factory block and heads). I just Need More $. All the major Spending is over.
#92
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#93
Somethings just make No sense, Hammer. They should make them for the Entire line (Ls1 thru 7) of intakes being that there $1000.oo. It's a no lose market as older FAST intake buyers would want to see or buy different runners to see HP diff. + or -. Better said, the RPM differences. RPM does = HP with some Tq loss. Sounds like the Typical thing to do for the aftermarket. MSD just fills in for the Ls1 and Ls7 intakes. FAST thinking I'd bet is : There were More Ls3 engine combinations Sold than Ls7's and the Ls1 & 2 casting is old and mastered by just add a 102 T/b offering.
#94
They say you ask and the answer will be given:
Not bad at all with a FAST intake 90mm and a 403 that runs 9's....BTW TFS Cathedral heads were used on Both, so let the fussing Continue....LOL! Look at those Cathedrals kick as and taking names....LMAO! The right combination can make HP with basically any style heads Besides factory Ls1 and 2 heads. Heck they even make Hp.
403 and 439 I had turned 7500 current combination turns 8400..From Mr. Roddy.
Not bad at all with a FAST intake 90mm and a 403 that runs 9's....BTW TFS Cathedral heads were used on Both, so let the fussing Continue....LOL! Look at those Cathedrals kick as and taking names....LMAO! The right combination can make HP with basically any style heads Besides factory Ls1 and 2 heads. Heck they even make Hp.
Last edited by Patron; 08-01-2017 at 06:57 PM.
#95
Guess I'll show this old thread... I try to save a few for myself.
https://ls1tech.com/forums/parts-cla...ete-motor.html
https://ls1tech.com/forums/parts-cla...ete-motor.html