Help a guy just getting into FI
Thread Starter
Staging Lane
Joined: Apr 2012
Posts: 80
Likes: 0
Help a guy just getting into FI SUP GUYS I acquired an ofi turbo kit for my 99 ta I'm going to run a either a gt45 or an on3 78mm billet turbo. I don't have a ton of money but i want to know the best way to go about doing this and have some sort of reliability .
Car currently has
stock bottom end ls1 (135k)
243 heads upgraded springs trunion kit
ls9 head gasket
ls7 lifters
btr stage iv na cam
option 1
turbo what's in the car
swap out cam for ls9
run the turbo kit
Option 2.
Lq9 /317 heads
swap rockers springs lifters pushrods from 243 setup
arp main bolts
cam?
option 3.
Suggestions?
Car currently has
stock bottom end ls1 (135k)
243 heads upgraded springs trunion kit
ls9 head gasket
ls7 lifters
btr stage iv na cam
option 1
turbo what's in the car
swap out cam for ls9
run the turbo kit
Option 2.
Lq9 /317 heads
swap rockers springs lifters pushrods from 243 setup
arp main bolts
cam?
option 3.
Suggestions?
Curious...is that the OFI single kit that retains A/C...?
Go with Option 2....but forged rods and pistons at least. Stock cranks are good for 800 RWHP. You can use a 3.825" Callies crank and get a 390ci like mine.
.
Go with Option 2....but forged rods and pistons at least. Stock cranks are good for 800 RWHP. You can use a 3.825" Callies crank and get a 390ci like mine.
.
Thread Starter
Staging Lane
Joined: Apr 2012
Posts: 80
Likes: 0
Yes that's the kit just going to cost a lot more upfront
But I guess that kind of gives you reassurance
But I guess that kind of gives you reassurance
i like option 2 with some good rods/pistons. i'd probably leave the 243's in the equation since they are already a known value.
cam depends on converter/gears etc..
pump gas, corn or race gas?
I had a 6.0 and a 78/75 set up. never made it to the dyno, but I dont think it had 800 at the wheels in it. (pump 91+water meth)
cam depends on converter/gears etc..
pump gas, corn or race gas?
I had a 6.0 and a 78/75 set up. never made it to the dyno, but I dont think it had 800 at the wheels in it. (pump 91+water meth)
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My vote would be a Gen IV 5.3 w/ those 243's.
Billet 78 and a LJMS Stage 2 or 3 cam.
If your looking for 800 at the crank you stock LS1 will get you pretty close.
I'm hoping to be pretty close to 750 crank/630whp at 10-11lbs. with my T7875, CNC ported 317's and turbo cam.
Honestly I'd boost what you have, add a LJMS cam and enjoy it while you assemble a bullet for your ultimate goal.
Billet 78 and a LJMS Stage 2 or 3 cam.
If your looking for 800 at the crank you stock LS1 will get you pretty close.
I'm hoping to be pretty close to 750 crank/630whp at 10-11lbs. with my T7875, CNC ported 317's and turbo cam.
Honestly I'd boost what you have, add a LJMS cam and enjoy it while you assemble a bullet for your ultimate goal.
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Staging Lane
Joined: Apr 2012
Posts: 80
Likes: 0
My vote would be a Gen IV 5.3 w/ those 243's.
Billet 78 and a LJMS Stage 2 or 3 cam.
If your looking for 800 at the crank you stock LS1 will get you pretty close.
I'm hoping to be pretty close to 750 crank/630whp at 10-11lbs. with my T7875, CNC ported 317's and turbo cam.
Honestly I'd boost what you have, add a LJMS cam and enjoy it while you assemble a bullet for your ultimate goal.
Billet 78 and a LJMS Stage 2 or 3 cam.
If your looking for 800 at the crank you stock LS1 will get you pretty close.
I'm hoping to be pretty close to 750 crank/630whp at 10-11lbs. with my T7875, CNC ported 317's and turbo cam.
Honestly I'd boost what you have, add a LJMS cam and enjoy it while you assemble a bullet for your ultimate goal.
I have never run an ls6 or ls9 cam but the sloppy stage 2 (small trickflow) is only another $100 over the ls9 cam. ls6 cams arent even made anymore and used ones are almost as expensive as new trickflows.
Thread Starter
Staging Lane
Joined: Apr 2012
Posts: 80
Likes: 0
will have to look into this cam as well. Will it out perform the ls9?
man thats impossible for me to say having never run an ls9. but the guy who's "recipes" I follow has a special disdain for the ls9 cam. according to him the long duration on the exhaust side makes it lazy in the midrange. I know just enough about valve events to put my foot in my mouth so I should to shut up about it generally
i run a cam a little bigger than the small trickflow in a 4.8 with the 78/75 and it's a beast. street tires are useless at any speed. drag radials are useless from a dig on the street.
my advice would be to assemble a known "cookie-cutter" combo and learn to tune that.
i run a cam a little bigger than the small trickflow in a 4.8 with the 78/75 and it's a beast. street tires are useless at any speed. drag radials are useless from a dig on the street.
my advice would be to assemble a known "cookie-cutter" combo and learn to tune that.
Sock away $250-$300 and when a used one pops up which it inevitably will, scoop it up.
The only new parts on my build were my gauges lol, everything else was used and sourced through this forum.
Also consider there are guys out there with stock long block 5.3's with little more than springs and push rods making over 700whp.
While an application specific cam is always a good addition to any combo I don't feel like its a requirement to make decent power.