408, S488 turbo build feedback
408, S488 turbo build feedback I am beginning to assemble my 408 and would like some general feedback and pointers as to what to look out for. Here is what I have so far
Iron block Lq4/9 bored .030
Wiseco -15cc pistons
K1 forged crankshaft
Callies forged rods
Comp cam 235/240 .610"/.612" 115+6 thanks to Martin@tick for the cam
L92/LS3 CNC heads with Lunati springs 2.20 intakes
Victor Jr. intake
ARP Main and Head Studs
New ported oil pump
LS9 head gaskets
new S488 BW turbo with 99mm wheel and 1.45 AR
double roller timing set.
Stock coil packs
I will be getting a 90mm TB? but is there something better for this combo?
I am in the process of getting a car to put this in. I am building the engine with my son so he gets to know about LS engines and building in general.
Anything I need to be aware of or that I may need now that I have it all apart?
Iron block Lq4/9 bored .030
Wiseco -15cc pistons
K1 forged crankshaft
Callies forged rods
Comp cam 235/240 .610"/.612" 115+6 thanks to Martin@tick for the cam
L92/LS3 CNC heads with Lunati springs 2.20 intakes
Victor Jr. intake
ARP Main and Head Studs
New ported oil pump
LS9 head gaskets
new S488 BW turbo with 99mm wheel and 1.45 AR
double roller timing set.
Stock coil packs
I will be getting a 90mm TB? but is there something better for this combo?
I am in the process of getting a car to put this in. I am building the engine with my son so he gets to know about LS engines and building in general.
Anything I need to be aware of or that I may need now that I have it all apart?
Last edited by meatheadgn; Dec 14, 2012 at 10:50 AM. Reason: added detail
On The Tree
Joined: Jan 2012
Posts: 131
Likes: 0
From: sydney australia
sounds good mate I,m running very similar setup forged iron lq9 408 s400 hp-88 with the 96mm 1.32 ar sheet metal intake 92 mm fast t/b and ls7 style heads !!! currently getting tuned made 800rwhp @14psi 980 rwhp @21psi more to come on aussie mainline dyno thru t400 auto !!! cheers
TECH Fanatic
Joined: Jan 2010
Posts: 1,343
Likes: 2
From: South of Augusta,GA
sounds good mate I,m running very similar setup forged iron lq9 408 s400 hp-88 with the 96mm 1.32 ar sheet metal intake 92 mm fast t/b and ls7 style heads !!! currently getting tuned made 800rwhp @14psi 980 rwhp @21psi more to come on aussie mainline dyno thru t400 auto !!! cheers
TECH Fanatic
Joined: Jan 2010
Posts: 1,343
Likes: 2
From: South of Augusta,GA
sounds good mate I,m running very similar setup forged iron lq9 408 s400 hp-88 with the 96mm 1.32 ar sheet metal intake 92 mm fast t/b and ls7 style heads !!! currently getting tuned made 800rwhp @14psi 980 rwhp @21psi more to come on aussie mainline dyno thru t400 auto !!! cheers
I will be running a Powerglide transmission with about a 4000 stall converter. I have a Hughes PG good to about 1500 hp. The car will wiegh under 2400 pounds without driver. I can run any size TB as I have not bought the Edelbrock elbow or have the TB yet. Will a 102 give me enough extra horsepower to justify the cost?
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sounds good mate I,m running very similar setup forged iron lq9 408 s400 hp-88 with the 96mm 1.32 ar sheet metal intake 92 mm fast t/b and ls7 style heads !!! currently getting tuned made 800rwhp @14psi 980 rwhp @21psi more to come on aussie mainline dyno thru t400 auto !!! cheers
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TECH Apprentice
Joined: Jan 2002
Posts: 366
Likes: 0
From: Gilbert, AZ
I assume a cable TB? I would go as big as you can swing.
http://texas-speed.com/p-691-ptm-102...ttle-body.aspx
http://texas-speed.com/p-691-ptm-102...ttle-body.aspx
I assume a cable TB? I would go as big as you can swing.
http://texas-speed.com/p-691-ptm-102...ttle-body.aspx
http://texas-speed.com/p-691-ptm-102...ttle-body.aspx
On The Tree
Joined: Jan 2012
Posts: 131
Likes: 0
From: sydney australia
hi mate not sure on cam specs it,s a custom one from my mechanic might have to hit him up for specs just to compare to what others are running or being recommended !!!! have not driven it yet with new setup but had an s475 on it before stock heads etc used to get about 5/6psi boost on handbrake with 3000rpm stall so hoping it,s the same as turbine side has not changed !!!!totally streetable driven all the time traffic etc !!! hopefully have a dyno vid in next few days 1000+ ???? to the op at your weight that is going to be insane mine is 4000pds !!!! trying to upload one vid I have but it,s too slow anyway cheers
Update I forgot about having this out there in space and I just found it today. Here are some updates. The car is running and I am putting miles on it last summer and fall. I am looking forward to the spring time so I can finish tuning the Holley HP and get some miles under boost in it. It is actually really nice to drive with the tall tires and 3.73 gears. The PTC converter and Glide seem very streetable.
Thanks to Martin for his cam choice. I am looking forward to getting some boost on it. The 5" exhaust dumped in front of the tire is quite a bit louder than I had anticipated. I have a C6ZO6 with the LG exhaust and it seems tame by the Vega under mild acceleration.
I do wish I was a better and or smarter tuner but I guess that will come. Here are some pics.
Thanks to Martin for his cam choice. I am looking forward to getting some boost on it. The 5" exhaust dumped in front of the tire is quite a bit louder than I had anticipated. I have a C6ZO6 with the LG exhaust and it seems tame by the Vega under mild acceleration.
I do wish I was a better and or smarter tuner but I guess that will come. Here are some pics.
