Too much for the street?
AFR225 heads
Cam???
F1 Procharger
FMIC
100% Meth injection
60lb injectors
Haven’t sorted the fuel pump(s) and feed/return system yet.
Thinking about going 370”
Good pistons and rods
LS6 intake and Ported stock throttle body
14-15 psi boost
T56
LT1-S twin disc
Tick master
MGW shifter
And a speed bleeder
Moser 12 bolt 3:73’s
35 spline axles
Girdle
I have everything in hand , except picking out fuel pump/ lines / cam .
Question is - is this too much for the street , it definitely is not a race car just a fun street car with Strano springs and full UMI suspension. (98 Trans Am )
Maybe 700 RWHP??
Dave
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Put down 540/440 through the ( at the time TH400) Moser 12 bolt w/3:73’s spooled.
Thinking about switching everything to the 6speed T/A that’s currently got a LQ4 sitting next to it on a stand in the garage. Just don’t want to go too far and ruin the fun of the T/A (if that makes sense) that currently makes maybe 425 RWHP .
Lots of “Send it!!” Opinions , lol.
Should be a fun ride nevertheless
600whp in a six speed car on a summer radial is a **** load of fun, I have an absolute blast driving it anytime, anywhere.
Its fast enough to knock most cars I come across dick's in the dirt but its not so heavily modified that its undrivable.
It currently has a complete complementing of UMI suspension components which helps give the chassis a very sold feel.
Still has AC, power windows, power seats, killer stereo etc.
I drove it on a 375 miles road trip last year and it was awesome.
700whp is the next goal and will happen when the Gen IV 5.3 goes in at some point, until then I'm just enjoying it.
A lot of good info on this forum but 60's are gonna come up short on your goals, maybe look at some 80's or 120's.
I would think you might need alittle more than 14-15psi to get 700rwhp. I too run a FMIC and meth injection but I run 50/50 or 30/70 for detonation resistance and it works really well on the street. The FMIC will keep IATs down generally and the meth activation will drop usually below ambient for boost. Lets you run pump gas and more timing on the street

I was at about 480-500rwhp and it wasn't enough on the street with 275/45/18 sumimoto HTRz IIs, I could break them loose but it hooked most of the time. I'm stepping up from 10-11psi supercharger to 12+psi turbo and hoping for 550-600rwhp with full boost by 3k.
That Betty runs to 140 mph in a hurry but its completely drama free, like cruising at 70 mph and I think we can attribute that to the fact it was engineered to go fast and manage 700+ hp stock.
When you take a car that came with 350 hp from the factory and double or triple its output it becomes an unruly ****** simply because it was never meant to manage all that extra power.
I'm not gonna lie, my car is a handful and if your not on point and know what your doing you'll get into trouble very quickly.
The Hellcat, not so much, runs to triple digit speeds with one hand on the steering wheel and the other is changing radio stations while shooting the **** with your passenger and oh, by the way we just went 150 mph lol.
I guess the moral is make big power but also upgrade the supporting systems to go with it and you'll have a fast but more importantly a well balanced car that gives you confidence when you lay the hammer down.












