D1SC Cubic Inch limits.
Thread Starter
Racer
Joined: Aug 2005
Posts: 309
Likes: 0
From: Riverdale Utah
D1SC Cubic Inch limits.
Alright, so seens how the crank in my 408 decided to break in half, i am going to be completing a massive rebuild this winter. The engine will obviously be a little more than 408 cubic inches after a rebore/hone.
I am planning on ditching the nitrous garbage and finally getting blown. I am just having a very hard time deciding which route to go.
I realize an F1 blower would be sweet, but what all is involved with getting one to fit on a D1sc/p1sc kit? does it bolt right up? is it even needed?
im planning on 800-900 rwhp. will a D1sc support this on a larger cube motor?
I am planning on ditching the nitrous garbage and finally getting blown. I am just having a very hard time deciding which route to go.
I realize an F1 blower would be sweet, but what all is involved with getting one to fit on a D1sc/p1sc kit? does it bolt right up? is it even needed?
im planning on 800-900 rwhp. will a D1sc support this on a larger cube motor?
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
You probably already know the answer to this one, but the F1 is the way to go. I have seen a little P1 on a LS2 make 786, so a D1 can get you there as well. I am not Procharged, but I believe the F1 will bolt right up. Bob @ Exotic Performance Plus (EPP) can confirm this and is an excellent Procharger source. 
Thread Starter
Racer
Joined: Aug 2005
Posts: 309
Likes: 0
From: Riverdale Utah
Seems as though D1sc kits can be had for very very cheap. while an F1 blower alone is a few grand.
Just seems like there is no sense in going bigger and having "lag" as well as more parasitic loss to spin the blower when a tried and true D1SC can handle it just fine.
Life Time NCM #2196
Joined: Sep 2004
Posts: 82,592
Likes: 1,710
From: Converse TX
Nothing wrong with the DS1C, my little 347 is at 750 rwhp and has been for 4 years, when I need a new motor, I will want a bigger head unit, and thinking about the F1A or F1C that Arun says works fine with the bracket I have, I have the latest bracket from A&A, works like a champ with my DS1C, good luck with the build
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Burning Brakes
Joined: Nov 2007
Posts: 882
Likes: 2
From: Miami Florida
but what is the advantage of going bigger if the smaller will get you the power you want. I have a T tring on my car now and once i build a 408 why whould i upgrade, what would the advantage be. MY goals are 800-900 as well.
Former Vendor
Joined: Dec 2006
Posts: 2,239
Likes: 1
You probably already know the answer to this one, but the F1 is the way to go. I have seen a little P1 on a LS2 make 786, so a D1 can get you there as well. I am not Procharged, but I believe the F1 will bolt right up. Bob @ Exotic Performance Plus (EPP) can confirm this and is an excellent Procharger source.
Last edited by EPP; Aug 29, 2009 at 07:17 AM.
Burning Brakes
Joined: Nov 2007
Posts: 882
Likes: 2
From: Miami Florida
When you max out a blower it creates more heat than a blower that isn't spinning as hard. Take a look at this build and the horsepower we got out of it with an F-1A at just 12.4 psi of boost. There is also a lot of bottom end power there. http://www.exoticperformanceplus.com...Car.php?car=29
Thanks, I appreciate it. Bob
Thanks, I appreciate it. Bob
OK i understand that but are chargers like turbos, get a turbo to make the max power you want on the smallest turbo ???
I mean Even though the T trim might make the power @17psi and stuff will the power curve be better ???? I just want a good power curve ? I am sorry I am new to chargers
Former Vendor
Joined: Dec 2006
Posts: 2,239
Likes: 1
OK i understand that but are chargers like turbos, get a turbo to make the max power you want on the smallest turbo ???
I mean Even though the T trim might make the power @17psi and stuff will the power curve be better ???? I just want a good power curve ? I am sorry I am new to chargers
I mean Even though the T trim might make the power @17psi and stuff will the power curve be better ???? I just want a good power curve ? I am sorry I am new to chargers
Check out the torque at 2000 rpm on the dyno chart below. This is with an F-1A on an LS2/402 we built, with off the shelf AFR 225 heads and our EPP blower cam. This is in a CTS-V.
http://www.exoticperformanceplus.com...Car.php?car=29
Here is a link to this cars build. Bob
Thread Starter
Racer
Joined: Aug 2005
Posts: 309
Likes: 0
From: Riverdale Utah
thats slick. i anticipated alot more lag than that.
my buddy randy's 355 LT1 with an F1 blower has a bit of lag, but its also not 400 cubic inches feeding it. Thats pretty impressive that the power comes on just as quickly as a smaller blower.
my buddy randy's 355 LT1 with an F1 blower has a bit of lag, but its also not 400 cubic inches feeding it. Thats pretty impressive that the power comes on just as quickly as a smaller blower.
Melting Slicks
Joined: Feb 2006
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From: Houston
Pro
Joined: Feb 2005
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From: Upton MA
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
here is a question i keep asking myself, i am thru with a iron 402 build 9 & i comp & am running a chris novi 2k kit, theres gotta be a limit on how far i or ur wanting to go,for every sec in et time u drop the price gets very expensive ,so basically a 10.50 car & going to a 9. 50 car is gonna cost u some jack ,then ur gonna start getting into 10 ribs & cog drives & hell the next thing u know u cant drive the car on the street,i think the d1 would be fine for 800rwhp ,look what procharged automatic madmatt9471 has done with his car & hes running a forged 347, i think ur fine with the d1 in my personal opinion,peterpan is another one whos making 750rwhp thats nothing to sneeze @ either ,op ur car is capable of making more power & more tq just because of the bore size & because u opted to go with a 4.0 bore instead of the rebuild of a 346 or a 383,christwx is another car that makes big power with a 383 ,u can acheive 800 + rwhp with ur parts & ur motor with the right fuel system in my opinion
Former Vendor
Joined: Dec 2006
Posts: 2,239
Likes: 1
Here is an SLP iron block 402/AFR head engine with the SLP provided camshaft, and an D-1SC from a six speed Trans-Am.
Link to this car. http://www.exoticperformanceplus.com...Car.php?car=42 Bob
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
op another thing thats gonna make a big difference on hp is your cam selection, i had erik koeing build my motor 402 9 to 1 comp -32cc weisco pistons & a forced induction cam on a 117 lsa On Xer Custom grind comp cam & he made the decision on which cam to run, if i were u i would let him or someone thats been building these motors for a long time & knows what works,let them make that decision for u, I am not impressed with Slp stuff ,not knocking bob but if i were a betting man if the right cam was in that motor bob showed u the dyno graph on it would have made @ least 30 to 40 add meth & theres ur 800rwhp what i know i am just a tig welder heh,ask some of these guys on the forum who is one of the best engine builders in the country ,better yet email erik @ hke enterprises & tell hime ur situation & he will shoot u straight
Last edited by fsuforever; Sep 3, 2009 at 09:19 AM.
