Best LS7 head for maximum hp and torque?
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Yeah, I sent some LS7 heads to Advanced Inductions. They look nice. Turn around was pretty quick. I was going with the Race Proven Motorsports B-3 cam (they have a ton of videos that are pretty neat for a LS guy) and a msd intake. This is for a dart iron based 427 in a f-body. No results for a while.
Lots of choices man. One would think that the most expensive heads money can buy would be top dog but that's just not the case. Have you considered Brodix cylinder heads?
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On break smoking with my non English speaking crew... they know me, over 10 yrs.
But on the heads my friend...I've researched all! Darin and G Good have ls7 CID custom port heads. Darin's was listed @ $5k.all pro, brodix big spring, CID , mast for the Best casting. Have yet to see anything beat Mast straight OTB.
Chris Frank F10 heads have the best features.. someday I may get a set of Chris Frank heads without the CNC that or STR8 mast head and place my Custom Darin port work into it... Digitalization with a CNC, via Rowdy Yates Ls7 heads
But on the heads my friend...I've researched all! Darin and G Good have ls7 CID custom port heads. Darin's was listed @ $5k.all pro, brodix big spring, CID , mast for the Best casting. Have yet to see anything beat Mast straight OTB.
Chris Frank F10 heads have the best features.. someday I may get a set of Chris Frank heads without the CNC that or STR8 mast head and place my Custom Darin port work into it... Digitalization with a CNC, via Rowdy Yates Ls7 heads
Last edited by Smokey B; May 21, 2019 at 11:08 AM.
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Worked stock LS7 heads are hard to beat. But the cost... they are as expensive as the aftermarket stuff if you can find a set that's not wiped out--and if they are--rebuilding and porting and using new valves pushes the price to $4K pretty fast.
Which is why I went with the 11-degree LS3 stuff. It's essentially the same... same valves, laid over valve angle for a straighter shot, etc. Just the valve spacing is goofy LS3 where the intake valve is smashed against the cylinder wall. But on a big bore combo where that's less of a problem, I bet they are within 10HP of most LS7 heads that flow in the 400cfm range. More intake manifold options too.
Which is why I went with the 11-degree LS3 stuff. It's essentially the same... same valves, laid over valve angle for a straighter shot, etc. Just the valve spacing is goofy LS3 where the intake valve is smashed against the cylinder wall. But on a big bore combo where that's less of a problem, I bet they are within 10HP of most LS7 heads that flow in the 400cfm range. More intake manifold options too.
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Worked stock LS7 heads are hard to beat. But the cost... they are as expensive as the aftermarket stuff if you can find a set that's not wiped out--and if they are--rebuilding and porting and using new valves pushes the price to $4K pretty fast.
Which is why I went with the 11-degree LS3 stuff. It's essentially the same... same valves, laid over valve angle for a straighter shot, etc. Just the valve spacing is goofy LS3 where the intake valve is smashed against the cylinder wall. But on a big bore combo where that's less of a problem, I bet they are within 10HP of most LS7 heads that flow in the 400cfm range. More intake manifold options too.
Which is why I went with the 11-degree LS3 stuff. It's essentially the same... same valves, laid over valve angle for a straighter shot, etc. Just the valve spacing is goofy LS3 where the intake valve is smashed against the cylinder wall. But on a big bore combo where that's less of a problem, I bet they are within 10HP of most LS7 heads that flow in the 400cfm range. More intake manifold options too.
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It's hard to advise you to give up your LS7 heads, but if you're still on the 4.125" bore, then the smaller ports of some all out LS3 heads may be more useable, overall.
Or consider aftermarket "small-bore" LS7 heads, for better flow dynamics with the 4.125" bore.
Bigger isn't always better, and sometimes a more efficient, better thought out combination, can provide the results you are looking for.
Finding heads with the higher coefficient of discharge, and a higher exhaust flow ratio may give you the results you want with a smaller cam.
Or consider aftermarket "small-bore" LS7 heads, for better flow dynamics with the 4.125" bore.
Bigger isn't always better, and sometimes a more efficient, better thought out combination, can provide the results you are looking for.
Finding heads with the higher coefficient of discharge, and a higher exhaust flow ratio may give you the results you want with a smaller cam.
Thread Starter
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Joined: Sep 2010
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It's hard to advise you to give up your LS7 heads, but if you're still on the 4.125" bore, then the smaller ports of some all out LS3 heads may be more useable, overall.
Or consider aftermarket "small-bore" LS7 heads, for better flow dynamics with the 4.125" bore.
Bigger isn't always better, and sometimes a more efficient, better thought out combination, can provide the results you are looking for.
Finding heads with the higher coefficient of discharge, and a higher exhaust flow ratio may give you the results you want with a smaller cam.
Or consider aftermarket "small-bore" LS7 heads, for better flow dynamics with the 4.125" bore.
Bigger isn't always better, and sometimes a more efficient, better thought out combination, can provide the results you are looking for.
Finding heads with the higher coefficient of discharge, and a higher exhaust flow ratio may give you the results you want with a smaller cam.
The cubes and Ls7 heads already give good bottom end power,
With more compression and tuning this will only be further enhanced.
But you are right, it depends on the combo and what you are trying to achieve.
Lol, thats funny as hell, when my builder asked me my goals for my newest build. I responded with, i wanna light em up anywhere anytime at any speed. He laughed n said, ok stock gmpp ls7 for you than...but no, he was all about building me something reliable and FUN to drive as my car is a real street cruiser n prolly wont win many races. I just wanna be able to drive it like i stole it and have fun when the oppurtunity is there. Its hard to be honest about what we really wanna build sometimes.
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Lol, thats funny as hell, when my builder asked me my goals for my newest build. I responded with, i wanna light em up anywhere anytime at any speed. He laughed n said, ok stock gmpp ls7 for you than...but no, he was all about building me something reliable and FUN to drive as my car is a real street cruiser n prolly wont win many races. I just wanna be able to drive it like i stole it and have fun when the oppurtunity is there. Its hard to be honest about what we really wanna build sometimes.
The ones im running, MAST LS7 285cc...i honestly didnt wanna make less than 700hp at the flywheel on 92 octane. I wasnt interested in solid roller or high rev. I figured running the pig of a 4l80e trans wasnt gunna be helpful with hi rev so to speak. We still pushed alil n went with a decent 427 and mostly off the shelf parts. Its an expensive build for what it is, but we have our reasons. And this set up fits my build/theme of my street nova pro touring build.
https://ls1tech.com/forums/generatio...p-today-3.html
https://ls1tech.com/forums/generatio...p-today-3.html
Last edited by rkupon1; Jun 2, 2019 at 04:32 PM.
