JS01

iTrader: (10)

Dyno'd the street engine for my 4th gen Firebird earlier this week.

427ci LS3 (4.070 x 4.100), 11.5:1 - prepped by HKE and myself
LS3 heads done by AirFlow Development (Dennis Wheet)
Holley Hi Ram also done by AFD, 102mm NW TB.
Cam Motion solid roller, Jesel/Morel valvetrain
Kooks 2" primary headers. (Tiny 3" collector, being changed)
Moroso vacuum pump (8-9"~ of vac, being fixed and increasing to 16"~)
Bigstuff 3 COP

Has another 30hp+ in it easily, dynoing again in a few weeks after some minor fixes. Not bad for a OEM head/block deal.

Blown C5

Very nice results.

IllusionalTA

iTrader: (9)

Awesome results.. Can't go wrong with Afd..

Tuskyz28

Badass build!! Is the car go be a automatic or a 6 speed? Compression looks very pump gas friendly by the way.... must plan on seeing a lot of street duty ?

JS01

iTrader: (10)

Car is TH400, but it would be tons of fun with a t56. And yes will be on the street a good bit.

HighspeedLean

iTrader: (2)

If you don't mind me asking, what timing and plugs were you using? Were they optimized on the dyno, or were any changes made?

Very nice results by the way!

JS01

iTrader: (10)

TR6, it ended up liking 24.5-25.0 deg of timing and 12.7-12.9 AFR. We made about 15 pulls

KCS

iTrader: (20)

Nice power, Jon. Do you plan to try and extend the peak HP RPM anymore since you have solid lifters?

JS01

iTrader: (10)

Yeah I was surprised the HP peaked as low as it did, valvetrain is good for alot more RPM so it would be neat to try..... Not sure that I'm going to make any big changes to shift the power up though.

HioSSilver

iTrader: (8)

Nice job. How do solid rollers hold up on the street these days?

JS01

iTrader: (10)

Never had a prob with them now or in the past, as long as everythings happy just check lash every oil change.