LT1 Carb Setup
06-08-2011, 10:11 PM
#21
Launching!
Join Date: Mar 2004
Location: Elwood, IL
Posts: 299
Likes: 0
Received 0 Likes
on
0 Posts
I had a hard time reading this thread for some reason.
I went to a carb 3 years ago. I org. had a 355 with a GM dual plane intake. which is the only bolt on (with no mods) intake. The car picked up 1.5 tenths. I was running a 850 Holley done by the Carb Shop.
I did get a Vic Jr. done for the motor. Picked up another 2 tenths.
I now am running a 385 with the same 850 carb. this motor made 612 at the crank on a dyno. A 750 would probably be big enough for your setup. If you can try both sizes you might see an improvement with the 850. This car flows 926cfm. I did try a 950 on the dyno. It did make more power and torque. I also tried it on the track. the car actually slowed down with the larger carb.
I run a MSD crank trigger and a MSD billet crank trigger distr.
I did cut the cowl back to the firewall where the carb goes. I can pull the distr. out of the motor without lowering it.
Hope it helps
ken
I went to a carb 3 years ago. I org. had a 355 with a GM dual plane intake. which is the only bolt on (with no mods) intake. The car picked up 1.5 tenths. I was running a 850 Holley done by the Carb Shop.
I did get a Vic Jr. done for the motor. Picked up another 2 tenths.
I now am running a 385 with the same 850 carb. this motor made 612 at the crank on a dyno. A 750 would probably be big enough for your setup. If you can try both sizes you might see an improvement with the 850. This car flows 926cfm. I did try a 950 on the dyno. It did make more power and torque. I also tried it on the track. the car actually slowed down with the larger carb.
I run a MSD crank trigger and a MSD billet crank trigger distr.
I did cut the cowl back to the firewall where the carb goes. I can pull the distr. out of the motor without lowering it.
Hope it helps
ken
06-08-2011, 10:31 PM
#22
TECH Fanatic
iTrader: (26)
Join Date: Mar 2010
Location: Milledgeville, GA
Posts: 1,909
Likes: 0
Received 0 Likes
on
0 Posts
I had a hard time reading this thread for some reason.
I went to a carb 3 years ago. I org. had a 355 with a GM dual plane intake. which is the only bolt on (with no mods) intake. The car picked up 1.5 tenths. I was running a 850 Holley done by the Carb Shop.
I did get a Vic Jr. done for the motor. Picked up another 2 tenths.
I now am running a 385 with the same 850 carb. this motor made 612 at the crank on a dyno. A 750 would probably be big enough for your setup. If you can try both sizes you might see an improvement with the 850. This car flows 926cfm. I did try a 950 on the dyno. It did make more power and torque. I also tried it on the track. the car actually slowed down with the larger carb.
I run a MSD crank trigger and a MSD billet crank trigger distr.
I did cut the cowl back to the firewall where the carb goes. I can pull the distr. out of the motor without lowering it.
Hope it helps
ken
I went to a carb 3 years ago. I org. had a 355 with a GM dual plane intake. which is the only bolt on (with no mods) intake. The car picked up 1.5 tenths. I was running a 850 Holley done by the Carb Shop.
I did get a Vic Jr. done for the motor. Picked up another 2 tenths.
I now am running a 385 with the same 850 carb. this motor made 612 at the crank on a dyno. A 750 would probably be big enough for your setup. If you can try both sizes you might see an improvement with the 850. This car flows 926cfm. I did try a 950 on the dyno. It did make more power and torque. I also tried it on the track. the car actually slowed down with the larger carb.
I run a MSD crank trigger and a MSD billet crank trigger distr.
I did cut the cowl back to the firewall where the carb goes. I can pull the distr. out of the motor without lowering it.
Hope it helps
ken
06-09-2011, 10:24 PM
#24
TECH Apprentice
Join Date: Apr 2006
Posts: 327
Likes: 0
Received 0 Likes
on
0 Posts
i have a 383 LT1, but im boosted.
im running a holley based 750 cfm blow thru
i converted a gen 1 SBC intake myself. i re-drilled the holes, and i made angle washers.
depending on your air cleaner, you could probably do a stock hood
im running a holley based 750 cfm blow thru
i converted a gen 1 SBC intake myself. i re-drilled the holes, and i made angle washers.
depending on your air cleaner, you could probably do a stock hood
06-09-2011, 10:48 PM
#25
Launching!
Join Date: Mar 2004
Location: Elwood, IL
Posts: 299
Likes: 0
Received 0 Likes
on
0 Posts
They are custom 1 3/4 to 1 7/8 step headers. I don't believe they would work with the stock motor mounts. I am running a mid plate also. I had the headers built after I did the motor and mid plates.
Ken
06-10-2011, 09:08 PM
#27
TECH Apprentice
Join Date: Apr 2006
Posts: 327
Likes: 0
Received 0 Likes
on
0 Posts
06-10-2011, 11:20 PM
#29
On The Tree
Join Date: Jun 2010
Posts: 192
Likes: 0
Received 0 Likes
on
0 Posts
