Cathedral vs Ls3 test

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Oct 30, 2018 | 07:56 AM

#121

HioSSilver

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From: Winchester, VA

Yea a ls3 intake on that combo is a no no unless it's a truck......oh wait

When you changed to the fast did you change to a 102mm tb also?

Oct 30, 2018 | 08:35 AM

#122

Darth_V8r

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My god, square ports AND midlength runners? Do you even have enough torque to cruise down the highway???

Oct 30, 2018 | 09:14 AM

#123

BigDaddy97

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From: Lawrenceburg Ky

Quote:

Originally Posted by HioSSilver

Yea a ls3 intake on that combo is a no no unless it's a truck......oh wait

When you changed to the fast did you change to a 102mm tb also?

I had the 102 on the LS3 intake and the fast intake.

Oct 30, 2018 | 09:18 AM

#124

BigDaddy97

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From: Lawrenceburg Ky

Quote:

Originally Posted by Darth_V8r

My god, square ports AND midlength runners? Do you even have enough torque to cruise down the highway???

Bahaha.....cutting a 1.36 sixty foot while leaving off the footbrake at only 1400.......I got foot pounds a plenty

Oct 30, 2018 | 10:05 AM

#125

Darth_V8r

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From: My own internal universe

Quote:

Originally Posted by BigDaddy97

Bahaha.....cutting a 1.36 sixty foot while leaving off the footbrake at only 1400.......I got foot pounds a plenty

Yeah I personally believe a big cube motor will make torque whether you want it to or not. Just build for power.

Oct 30, 2018 | 10:07 AM

#126

HioSSilver

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From: Winchester, VA

Quote:

Originally Posted by BigDaddy97

I had the 102 on the LS3 intake and the fast intake.

Good.....is your fast ported?

Quote:

Originally Posted by BigDaddy97

Bahaha.....cutting a 1.36 sixty foot while leaving off the footbrake at only 1400.......I got foot pounds a plenty

lol.....some here would believe that was impossible

Oct 30, 2018 | 12:54 PM

#127

KCS

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From: Conroe, TX

Quote:

Originally Posted by Darth_V8r

Yeah I personally believe a big cube motor will make torque whether you want it to or not. Just build for power.

More cubes certainly helps.

Oct 30, 2018 | 01:08 PM

#128

Tuskyz28

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From: Mississippi

The head with the larger intake runner is always the better head.... point blank period.

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Oct 30, 2018 | 01:45 PM

#129

spanks13

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The head with the best approach into the chamber is the better head.

Oct 30, 2018 | 02:03 PM

#130

NAVYBLUE210

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From: Coast of San Mateo County Between Pacifica & HMB

Quote:

Originally Posted by Tuskyz28

The head with the larger intake runner is always the better head.... point blank period.

How about GM CNC LS3 (276 CCs) VS AFR (260 CC),TFS (255 CC), or MAST Mid Bore (255 CC) LS3 Heads?
Just to name 3.

Oct 30, 2018 | 02:16 PM

#131

G Atsma

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From: Central Cal.

Quote:

Originally Posted by NAVYBLUE210

………..AFR (260 CC),TFS (255 CC), or MAST Mid Bore (255 CC) LS3 Heads?
Just to name 3.

And these are aftermarket heads. I've seen where the TSP(PRC) CNC LS3 head at about 269 CC out flows the GM CNC. It's the path, not the volume....

Oct 30, 2018 | 02:36 PM

#132

Che70velle

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From: Dawsonville Ga.

Quote:

Originally Posted by Tuskyz28

The head with the larger intake runner is always the better head.... point blank period.

Whoa kimosabe. Better head for what exactly?

Oct 30, 2018 | 02:44 PM

#133

KCS

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From: Conroe, TX

Quote:

Originally Posted by Tuskyz28

The head with the larger intake runner is always the better head.... point blank period.

I hope you’re joking.

Oct 30, 2018 | 03:23 PM

#134

BigDaddy97

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From: Lawrenceburg Ky

Quote:

Originally Posted by HioSSilver

Good.....is your fast ported?
No sir

lol.....some here would believe that was impossible

Trust me it's very possible. The fast is not ported.

Oct 30, 2018 | 04:10 PM

#135

Tuskyz28

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From: Mississippi

I can send my LS3 heads to Frankenstein for the 1.5 program to make them 288cc on the intake runner and it will make more power than any head in this thread. Y'all guys just a bunch of haters. Always hating cause i know what im talking about.

Oct 30, 2018 | 04:44 PM

#136

NAVYBLUE210

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From: Coast of San Mateo County Between Pacifica & HMB

Quote:

Originally Posted by Tuskyz28

No Hate. "Just Keeping it Real!" when you get out ahead of your skis.
A little humility goes a Long way!

Last edited by NAVYBLUE210; Oct 30, 2018 at 06:35 PM.

Nov 1, 2018 | 04:33 PM

#137

big hammer

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From: over dere

Quote:

Originally Posted by BigDaddy97

Thanks Navy and to answer your questions, this stroker gave up very very little on the bottom end but now peaks at 6800 and pulls to 7200 when i took your advice and switched to the fast mid runner. The previous intake was a radius mod LS3 which is a fine piece for some applications but ran out of air at only 5800 on my 421. I was only running mid 10.80's with the LS3 intake and off the shelf stroker cam. I switched to the mid runner intake and a custom cam motion cam and went 10.42. My #1 problem now is getting all this power to the ground which i suspect the custom powerglide will solve, because my starting line ratio is ridiculous as it is.

thats interesting. I have a buddy with a 416 with ported heads and a big Cam and it’s shitting the bed after 5800 as well. Has stock ls3 intake