Has anyone run a set of L92s with boost yet?
Originally Posted by ss1
Is this pretty much the same scenario with the LS7 heads (on a larger bore)?
Would heads flowing this well not really benefit from a D1SC, or would ~200 additional rwhp be obtainable with this blower?
Would heads flowing this well not really benefit from a D1SC, or would ~200 additional rwhp be obtainable with this blower?
So on a larger displacement engine, with these better flowing heads, it would be safe to say boost would be reduced quite a bit providing it's using the correct intake/exhaust components? I like the idea of the L92 or LS7 heads, but don't really want to spend any more money on another blower.
The only reason i would use AFR, ET or TFS is because of the added thickness in the heads. IMO with high boost applications that is what matters more than just flow. If i was doing a N/A setup i would go with the ET LS7 heads without even thinking twice about it.
guy on Corvetteforum just did a 427 F1R blower with l92 heads....I am waiting to see how it all hold up, I know the power will be there with the flow of these heads, just the "holding down" part I am concerned with. If they can get these heads to hold to 15-18 psi, then its all good! I would love a C5 with 416 cube L92, L76 intake, fuel rails, TB (90 mm stock, intake better than FAST 90), heads ported to 360+ intake and 245 exhaust. APS TT kit, 10 psit to start and LOTS of power.
SDB
SDB
Staging Lane
Joined: Aug 2006
Posts: 81
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Any item less restrictive in a boosted appliction will reduce PSI, but I have seen PSI go down when a restriciton was removed , yet horsepower and torque increased due to more efficient air flow. I think it goes back to the basic fact that an engine is just an air pump and the more air you can pump through it, the more HP you can make. Now the power and torque curve may change, but PSI alone does not always increase HP.
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TECH Apprentice
Joined: Sep 2004
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From: Kona, Pearl Ridge
Originally Posted by SDB
I would love a C5 with 416 cube L92, L76 intake, fuel rails, TB (90 mm stock, intake better than FAST 90), heads ported to 360+ intake and 245 exhaust. APS TT kit, 10 psit to start and LOTS of power.
SDB
SDB
Originally Posted by BIG BAD BLACKSS
Im in the market for a head for my iron 370 with the 4.030" bore. The big flow #s, low price, and just under 70cc chambers makes this an option for me it seems.
I was looking at the AFRs, but it seems iwth some mild porting (mostly on the exaust) these heads will be pretty close to the flow of the AFRs. What im worried about is what intake can i run? The truck intake isnt ideal for high HP, and the car intake is STILL not availabl apparently!?? Just wondering if anyone has run these yet on a boosted app, what they did for an intake, and how much boost/hp have they held up to? Seems like theres still not very many cars running these yet.
My plans are a D1 or possibly selling the D1 (still brand new in box) and geting an F series blower.
I was looking at the AFRs, but it seems iwth some mild porting (mostly on the exaust) these heads will be pretty close to the flow of the AFRs. What im worried about is what intake can i run? The truck intake isnt ideal for high HP, and the car intake is STILL not availabl apparently!?? Just wondering if anyone has run these yet on a boosted app, what they did for an intake, and how much boost/hp have they held up to? Seems like theres still not very many cars running these yet.
My plans are a D1 or possibly selling the D1 (still brand new in box) and geting an F series blower.
Originally Posted by BIG BAD BLACKSS
Seems people are talking about 600RWHP with these heads with a lil porting and a moderate cam... N/A! Somones gotta be interested in what they can do with a lil boost?
Jim
Originally Posted by Mr_president
does anyone know off hand what the l92 heads flow out of the box and will our springs and retainers fit those(i have the comp 921 set)