Dyno Guesses & Bench Racing Forum - Guess my 402 numbers.

TSP 402 shortblock. 11.2:1 91oct
RPM small bore ls7 heads flow about 380cfm
RPM ported ls7 intake 355-360cfm
Mick williams 96mm throttle body.
blackwing intake
custom cam cut for the heads 236-248 .648/.651 114lsa
ARH 1 7/8 headers no cats.
powerbond ud pulley
diamond stage 2 clutch
ls7 rail/injectors
ls7 rockers trunion upgrade

other stuff...

Probably pulling to 7-7200rpm

should be on the dyno by next end of next week/week after.

Motor is in goes on the roller early next week!

First Fire Up any minute now!

Started her today and went on a light drive. street tune tonight and in the morning. Dyno tune in the afternoon. We will be going speed density.

http://www.youtube.com/watch?v=2E56wd-plPQ&feature=youtu.be

I'm curious on how well you will do. I was gonna go with RPM's small bore LS7 heads but they never responded back to my inquries and its now been at least a year since I talked to them. Good to see them done. I'm guessing around 520/490 depending on what kind of dyno etc. you will be using.

well they werent fully ready a year ago. In fact we found out more things that neede to be addressed while doing mine. I hope to make closer to 540-550whp and 500tq but we will see. The cam was cut to work with the heads. We also fully ported the intake manifold,ported the intake mouth to match my 96mm NW throttle body, and I went ahead and got the ARH 1 7/8 with the catless 3x3 x pipe. UD pulley and light flyweel as well to add every last little hp out of it.

My first numbers are 536/491. But we have somethings to do with the air intake before we do any more tunning. The blackwing wasn't working well so we make shifted an airaid to get these numbers. We will be doing a different intake then more tunning in the next day or so.


http://a6.sphotos.ak.fbcdn.net/hphotos-ak-ash4/424706_388569347825503_100000173229773_1840490_350 026225_n.jpg

Dyno run from the graph above.

http://www.youtube.com/watch?v=9efkY8oealQ&feature=youtu.be

Nice numbers. Though I'm glad I didnt drop the 4k+ into changing over my setup to LS7. I'm guessing you should be able to get that thing above 550 RWHP with the right cam (not sure what size your running) and tuning.

I have close numbers and am still on a stage 1 PRC LS6 head and FAST Intake. I'm guessing with some tweaking you will make a nice amount of more power out of her. Good luck and hope to see you get over 550 RWHP.

Nice numbers. Though I'm glad I didnt drop the 4k+ into changing over my setup to LS7. I'm guessing you should be able to get that thing above 550 RWHP with the right cam (not sure what size your running) and tuning.

I have close numbers and am still on a stage 1 PRC LS6 head and FAST Intake. I'm guessing with some tweaking you will make a nice amount of more power out of her. Good luck and hope to see you get over 550 RWHP.

very mild cam 236-248 .648/.651 114 drives like my old 228-232 did in the stock block. Compression is also only 11-1. bump both up a bit and 550-560 is right there. Could go with a bigger cam and hit 550 but it drives so damn nice with the cam its got i may just leave it alone. Should have not bought the bottom end used as that was the limiting factor on the compression. We figure 11.7:1 and we would have made about 550/500. But I'm happy with the power and drivability it has right now. Not sure is it matters but this was not on a dyno jet. I believe it read 3-4% lower then a dyno jet.