Cathedral v.s. Rectangular Port Cylinders - Head To Head
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From: Studewood/Acres-Homes TX.
Well I"ll get u that info...u will have to shrink the valves of the heads or elderbrock LCD canted that a small bore. We watching the game Johnny man. To my haters. Get $ I"m doing everything in my post riding in a 2013 impala.
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From: Studewood/Acres-Homes TX.
No it's u who is condescending I just learn fast....if u hate then u hate I learned lsx engines in ......? it may have took you longer Y because I've learned from other LSX mistakes.....All engines are the same.....Basic ....That is fact.....Part selection...and Knowledge and Knowing the right People....is what makes true power....
the bore stated was 3.800 i think u meant 3.900 if so read what heads I'm getting Mast small bore heads...Getting Ready for the fight....
the bore stated was 3.800 i think u meant 3.900 if so read what heads I'm getting Mast small bore heads...Getting Ready for the fight....
Last edited by lil john; Sep 14, 2013 at 05:21 PM.
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From: Studewood/Acres-Homes TX.
You could also work with a few other heads...it's just research and knowing stuff....off hand you could take AFR/TSP/TFS and if they don't fit get a smaller valve setup.....Port will need to match bore size and don't forget the crank.But Mast 240's are made for 3.900 bore.... look at the architecture & ls3 intake........ I went with a Vic Jr. ...Bare $999.oo it's who you know to get real prices....Fact.
Johnny Foot ball ....+....The Tide =Johnny may have Drowned.
Johnny Foot ball ....+....The Tide =Johnny may have Drowned.
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From: Studewood/Acres-Homes TX.
I'm not rich but I do no the owner of the store, so It's to my benefit..2000.oo... they will be gotten as was my cam,lifters,intake,t/b,injectors....etc....
I research things before I spend that's Y I Know a lot...I compare my *** off....
Johnny Football may come back?
Port work will be 1000.oo I have to buy ls7 valves and cut them down to 2.160-.030 Bowl,throat & short-side radius
....This is whats being done....I'm not rich.....I just want what I want....and I'm patient to save to get what I want..
Lay A way starts @....... once begun.....how long will it take if i get a AVG. I do know the Owner, he makes $ while still giving me REAL prices......
I research things before I spend that's Y I Know a lot...I compare my *** off....
Johnny Football may come back?
Port work will be 1000.oo I have to buy ls7 valves and cut them down to 2.160-.030 Bowl,throat & short-side radius
....This is whats being done....I'm not rich.....I just want what I want....and I'm patient to save to get what I want..
Lay A way starts @....... once begun.....how long will it take if i get a AVG. I do know the Owner, he makes $ while still giving me REAL prices......
I'm not rich but I do no the owner of the store, so It's to my benefit..2000.oo... they will be gotten as was my cam,lifters,intake,t/b,injectors....etc....
I research things before I spend that's Y I Know a lot...I compare my *** off....
Johnny Football may come back?
Port work will be 1000.oo I have to buy ls7 valves and cut them down to 2.160-.030 Bowl,throat & short-side radius
....This is whats being done....I'm not rich.....I just want what I want....and I'm patient to save to get what I want..
I research things before I spend that's Y I Know a lot...I compare my *** off....
Johnny Football may come back?
Port work will be 1000.oo I have to buy ls7 valves and cut them down to 2.160-.030 Bowl,throat & short-side radius
....This is whats being done....I'm not rich.....I just want what I want....and I'm patient to save to get what I want..
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From: Studewood/Acres-Homes TX.
I see U before I get out of the door yes ...correct on all points...T&D rockers and Maybe a little longer vale set-up....But my head man can do that it's getting them in my hands and saving for the work....Time.... I'm in know rush I want this to be right if this goes right ...I will be able to do other things like the Impala..That's y i got to have my stuff together and Know the right people....to get things done.....In TX....Keep your EYE's open SAT. night
I see U before I get out of the door yes ...correct on all points...T&D rockers and Maybe a little longer vale set-up....But my head man can do that it's getting them in my hands and saving for the work....Time.... I'm in know rush I want this to be right if this goes right ...I will be able to do other things like the Impala..That's y i got to have my stuff together and Know the right people....to get things done.....In TX....Keep your EYE's open SAT. night
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From: Studewood/Acres-Homes TX.
I had L92's since 09 and thought it would be good ...at first...More Hp more money so I got the quickest way there Solid roller...etc..... and I'm not buying heads 2 times to get WCCH to do my heads 900+tax add 1100 and we there...+ a smaller port 267 vs 240 and out flow them...I got intake for L92 setup.....Lets STOP...Mast makes 12 Degree LS3 style port heads that's..... Y...no need for ls7's Mast has LS3's with the same valve lay out......I have thought about changing but I out thought the problem with a EASY answer...Mast 240's
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From: Studewood/Acres-Homes TX.
BTW: I Had 1 of the first sets of TFS LS3 heads ...They were sold to get me here....I have purchase a lot of stuff...cam,injectors,t/b,lifters,Vacuum pump.So now I'm back to heads ...I bought them thinking I'm good but missing parts ...so I still have L92's ...Sold...@ a 200 profit....Now we back to heads I like the idea of a port even smaller than TFS that match their stock # I love to set a mark and try to obtain it/Design or come up with stuff
I had L92's since 09 and thought it would be good ...at first...More Hp more money so I got the quickest way there Solid roller...etc..... and I'm not buying heads 2 times to get WCCH to do my heads 900+tax add 1100 and we there...+ a smaller port 267 vs 240 and out flow them...I got intake for L92 setup.....Lets STOP...Mast makes 12 Degree LS3 style port heads that's..... Y...no need for ls7's Mast has LS3's with the same valve lay out......I have thought about changing but I out thought the problem with a EASY answer...Mast 240's
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From: Studewood/Acres-Homes TX.
? for you KCS...I have a 240cc Mast head that flows 350 @ .700 measured on a 3.90 bore....I change valves from 2.08 to 2.130 min. and match throat/Short-side radius to match increase in valve size......Can I get typically get 20+ cfms on a larger test bore of 4.030...to get over 370 cfm's from a stock style port...you will Need to open it up a tad.........not Can this work...Will this + up....? ......+ equals to add...Tell me Y it will or won't work...
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From: Studewood/Acres-Homes TX.
I chose these heads ....for the fact that. it's a 408..they out flow any Cathedral with a smaller test bore...and similar Runner size.....They have 12 degree valve lay out....... they match my LS3 intake........the port can grow for larger engine size(small thru large bore LS3 12 degree heads.... there may be enough material to port small runner to a large Runner size?..and Last ......Mast makes a good product....
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From: Studewood/Acres-Homes TX.
U asked me all the ?'s will this procedure work?...I have heads in the Lay A Way....Can U help Me ....LOL....Can u tell me Y it won't work...
Here are the true #'s for Mast 240's on a 3.90 bore will this work!?
INCH LIFT INTAKE FLOW (CFM) EXHAUST FLOW (CFM)
0.100 69 105
0.200 37 154
0.300 208 198
0.400 266 217
0.500 306 222
0.600 335 226
0.650 345 229
0.700 351 234
0.750 335 238
Here are the true #'s for Mast 240's on a 3.90 bore will this work!?
INCH LIFT INTAKE FLOW (CFM) EXHAUST FLOW (CFM)
0.100 69 105
0.200 37 154
0.300 208 198
0.400 266 217
0.500 306 222
0.600 335 226
0.650 345 229
0.700 351 234
0.750 335 238
? for you KCS...I have a 240cc Mast head that flows 350 @ .700 measured on a 3.90 bore....I change valves from 2.08 to 2.130 min. and match throat/Short-side radius to match increase in valve size......Can I get typically get 20+ cfms on a larger test bore of 4.030...to get over 370 cfm's from a stock style port...you will Need to open it up a tad.........not Can this work...Will this + up....? ......+ equals to add...Tell me Y it will or won't work...
If that's the case, I'd say it can certainly hit 370cfm or more on the 4.030" if that is the aim of the guy working on the port. I'd add that I would open the chamber to at least 4.030" of it isn't already. The valve job could hurt or help the numbers, but opening the throat and SS area will help as well as few rousing the valve. There are too many variables to say it will work, but it can work if done properly.