Sweet Pea 1968 Chevy II Moar Door 4.8/7675/PG
05-13-2019, 05:35 PM
#441
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Then this piece of unobtanium finally comes in. Time to swap this one on and upgrade the injectors before the new tune. It’ll be ready just in time for high heat and humidity.
05-16-2019, 10:47 AM
#443
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
New intake will go on and I’ll upgrade injectors at that time (ID 2000s) then retune. I might get to the track late in June and then I should have something to post.
06-14-2019, 08:55 AM
#448
I've been waiting for the new radiator and it showed up today. It fits perfectly and doesn't hang down below the bottom of the bumper at all and it is 2" thinner than the first combo. There should be no cooling problems here with this double pass radiator.
Attachment 637854
Attachment 637855
The company that built it asked where we wanted the inlets and outlets for the radiator and we told them,"in a bag." That will allow perfect placement of the bungs for this setup. Still going to use the leftover truck radiator hose to get this plumbed. Then it needs a downpipe and the intercooler hooked up and she should run. I'm looking forward to Sweat Pea moving under her own power.
Attachment 637854
Attachment 637855
The company that built it asked where we wanted the inlets and outlets for the radiator and we told them,"in a bag." That will allow perfect placement of the bungs for this setup. Still going to use the leftover truck radiator hose to get this plumbed. Then it needs a downpipe and the intercooler hooked up and she should run. I'm looking forward to Sweat Pea moving under her own power.
What size and CFM are your fans ?
06-14-2019, 09:23 AM
#449
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
06-26-2019, 06:38 PM
#453
Awesome build. I run the BTR intake on my setup. It's a BTR stage 2 cam, FI s476 with a 96mm turbine, 1.10a/r and T4 flange. Peaks around 72-7300. Not sure if its BP limited or if I'll pick up some extra RPM spinning the turbo a little harder.
06-26-2019, 07:19 PM
#454
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Got her tuned and hope to get to the track this weekend. I’ll need to make a new exhaust and open it up to make full use of the BTR intake and the rpm potential.
06-27-2019, 09:35 AM
#455
More progress, just waiting on some odds and ends like shielded wire for the new crank sensor before she can be buttoned up and fired up.
Attachment 699452
Still got a chance to get the exhaust done. She needs to be started to see how loud it gets. Goal is whisper quiet at idle and cruising with boost activated cutout opening to let all hell break loose unde boost. There’s plenty room for more mufflers if necessary.
Attachment 699453
Attachment 699454
Attachment 699455
Attachment 699452
Still got a chance to get the exhaust done. She needs to be started to see how loud it gets. Goal is whisper quiet at idle and cruising with boost activated cutout opening to let all hell break loose unde boost. There’s plenty room for more mufflers if necessary.
Attachment 699453
Attachment 699454
Attachment 699455
06-27-2019, 04:07 PM
#456
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
06-29-2019, 08:32 AM
#457
I log post turbine backpressure. I’ve got full 4” all the way out behind the right rear tire. With the wastegate recirc’d into the downpipe, I was seeing 2 psi backpressure at anything above 12 psi of boost. Going to a screamer pipe off the gate, I still see 2 psi post turbine, but it’s now only after 17.5 psi of boost. Didn’t do any before and after runs to see the improvement, but I’m sure it didn’t hurt. Also dropped preturbine backpressure from 1.5-1.6:1 down to 1.3:1.
07-02-2019, 07:24 AM
#459
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Right now my pre-turbine backpressure is 10psi at 20psi boost through second gear. Backpresure to boost is 1:1 when coming up on the converter after releasing the trans brake.
I plan to turn this engine up to 8000rpm and go 30+ psi so I’m sure I’ll need more exhaust flow. Right now she’s not even working hard and she went just as fast as she did before changes with 5psi less boost so we’re doing something right. She’s also asking for a bunch more power on the hit.
I plan to turn this engine up to 8000rpm and go 30+ psi so I’m sure I’ll need more exhaust flow. Right now she’s not even working hard and she went just as fast as she did before changes with 5psi less boost so we’re doing something right. She’s also asking for a bunch more power on the hit.
07-07-2019, 02:51 PM
#460
9 Second Club
Thread Starter
Join Date: Jan 2013
Location: Just outside Memphis
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
Almost matched my previous best pass on 5psi less boost with the new combo. She needs a few bugs worked out but I hope to have her ready for SCT Bowling Green in August where I’ll try to defend my no-prep true street title.