Small Bore LS7 Heads - Available Now..
Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Small Bore LS7 Heads - Available Now..
We have developed an aftermarket LS7 casting and it will work on a 4.00 bore!
Within this coming week I'll publish the flow numbers and pricing for all the applicable bore sizes.
This is a true LS7 configuration so all present LS7 manifolds will bolt up. The runner volume is in the 260cc range and flow, on a 4.030 bore, was 378 CFM
This will be a very affordable, great flowing head for large cammed, all-out small bore applications.
Call or PM with any questions..
Adding flow charts off 4.030 bore and pricing is now on the web site
Valve Intake
Lift Flow
.100 71.1
.200 164.6
.300 246.1
.400 301.8
.500 338.8
.600 364.5
.650 372.1
.700 378.7
Valve Exhaust
Lift Flow
.100 56.8
.200 116.2
.300 177.9
.400 221.5
.500 239.7
.600 249.2
.650 253.1
.700 256.8
Within this coming week I'll publish the flow numbers and pricing for all the applicable bore sizes.
This is a true LS7 configuration so all present LS7 manifolds will bolt up. The runner volume is in the 260cc range and flow, on a 4.030 bore, was 378 CFM
This will be a very affordable, great flowing head for large cammed, all-out small bore applications.
Call or PM with any questions..
Adding flow charts off 4.030 bore and pricing is now on the web site
Valve Intake
Lift Flow
.100 71.1
.200 164.6
.300 246.1
.400 301.8
.500 338.8
.600 364.5
.650 372.1
.700 378.7
Valve Exhaust
Lift Flow
.100 56.8
.200 116.2
.300 177.9
.400 221.5
.500 239.7
.600 249.2
.650 253.1
.700 256.8
Last edited by C_Williams@RPM; Apr 27, 2011 at 10:27 AM. Reason: added flow charts for 4.030 bore added pricing on web
Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
.......the LS7 intake manifold runners are shorter in length but flow better also at low and mid-lifts.
It will be interesting.
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Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Some pricing updates..I am looking at the various valve iterations and will post the exact pricing later.
Introductory pricing - for a pair of heads, completely CNC'd = $1699
Intake Valve Options
Ti intake valves + $950
Hollow Stem SS Intake Valves + $300
Exhaust Valves Options
Ti exhaust valves + $950
Hollow Stem SS Exhaust Valves + $250
SS Exhaust Valves + 90
EXAMPLE PRICING
Heads =1699
Hollow stem intakes =300
SS ex valves =90
Patriot X kit =310
Fully Assembled heads = $ 2399
I'll add these to my website tomorrow along with the all spring kit options.
My bias would be to use titanium intake valves and cam and gear these smaller bore engines to run up well past 7,000 RPM.
Introductory pricing - for a pair of heads, completely CNC'd = $1699
Intake Valve Options
Ti intake valves + $950
Hollow Stem SS Intake Valves + $300
Exhaust Valves Options
Ti exhaust valves + $950
Hollow Stem SS Exhaust Valves + $250
SS Exhaust Valves + 90
EXAMPLE PRICING
Heads =1699
Hollow stem intakes =300
SS ex valves =90
Patriot X kit =310
Fully Assembled heads = $ 2399
I'll add these to my website tomorrow along with the all spring kit options.
My bias would be to use titanium intake valves and cam and gear these smaller bore engines to run up well past 7,000 RPM.
Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Racer
Joined: Dec 2005
Posts: 375
Likes: 0
From: Paducah KY
so who is going to bolt these on a stock ls3 bottom end with a nice big cam and see what they can do?
Because flow numbers get me nowhere but I would like to see what these will put down. If you want to donate a set I am sure I can talk Ron into putting them on and sharing all the details of what they will do with a Vengeance cam and fast combo.
Because flow numbers get me nowhere but I would like to see what these will put down. If you want to donate a set I am sure I can talk Ron into putting them on and sharing all the details of what they will do with a Vengeance cam and fast combo.
Last edited by pacebria; Apr 27, 2011 at 11:33 AM.
Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
I understand if the flow numbers don't float your boat and at the appropriate time (as in the right car) I will bolt them on a good LS2 and a good LS3 combo.
Make no mistake that these heads need a larger cam than the average driver wants and a 4.10:1 gear to shine. Below 2,500 RPM this type of combination will give up 15-20 ft lbs of torque and feel "soft" compared to a 235 cc head...it will even up from 2,500-4,000 and after that they will absolutely shine.
thanks,
Charlie
Make no mistake that these heads need a larger cam than the average driver wants and a 4.10:1 gear to shine. Below 2,500 RPM this type of combination will give up 15-20 ft lbs of torque and feel "soft" compared to a 235 cc head...it will even up from 2,500-4,000 and after that they will absolutely shine.
thanks,
Charlie
so who is going to bolt these on a stock ls3 bottom end with a nice big cam and see what they can do?
Because flow numbers get me nowhere but I would like to see what these will put down. If you want to donate a set I am sure I can talk Ron into putting them on and sharing all the details of what they will do with a Vengeance cam and fast combo.
Because flow numbers get me nowhere but I would like to see what these will put down. If you want to donate a set I am sure I can talk Ron into putting them on and sharing all the details of what they will do with a Vengeance cam and fast combo.
Former Vendor
Joined: Oct 2006
Posts: 2,050
Likes: 33
From: Cumming Georgia
Looking forward to seeing some #s!!!!
FWIW, the gentleman above has a BEAUTIFUL C6 with a very aggressive camshaft from Vengeance that produces just shy of 500rwhp on STOCK heads.. Working something out with him could be very beneficial to the both of you
FWIW, the gentleman above has a BEAUTIFUL C6 with a very aggressive camshaft from Vengeance that produces just shy of 500rwhp on STOCK heads.. Working something out with him could be very beneficial to the both of you
I understand if the flow numbers don't float your boat and at the appropriate time (as in the right car) I will bolt them on a good LS2 and a good LS3 combo.
Make no mistake that these heads need a larger cam than the average driver wants and a 4.10:1 gear to shine. Below 2,500 RPM this type of combination will give up 15-20 ft lbs of torque and feel "soft" compared to a 235 cc head...it will even up from 2,500-4,000 and after that they will absolutely shine.
thanks,
Charlie
Make no mistake that these heads need a larger cam than the average driver wants and a 4.10:1 gear to shine. Below 2,500 RPM this type of combination will give up 15-20 ft lbs of torque and feel "soft" compared to a 235 cc head...it will even up from 2,500-4,000 and after that they will absolutely shine.
thanks,
Charlie
Thread Starter
Former Vendor
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca