Looking at putting trick flow 420hp top kit on stock 5.7 tpi wonder if i need to change tpi or just bigger injectors. and maybe anything els. Or anyone done this what kinda power u got not build a drag car just fun driver.

 

If memory serves, that cam is ENTIRELY inappropriate for TPI. I seem to recall also that it wasn't a roller. Post the specs to be sure.

Be aware also, you will get NOWHERE NEAR 420 HP if you leave TPI on it. That's fantasy land. You MIGHT get an honest 325 out of it but even that is kinda iffy.

 

It is rollers so whats a budget friendly tpi intake that would work

 

Well, TPI is TPI; either it is or it isn't. So there's no other TPI intake besides TPI.

Most people, when they want to free themselves of its limitations, use something like the Holley Stealth Ram or the MiniRam. But there are other options as well, those are just 2 popular ones.

Post the cam specs.

 

Never mind. I looked it up myself.

https://www.summitracing.com/parts/t...tcombocontents

The cam is not a roller.


Product Line:Trick Flow® Track Max® Camshafts for Small Block Chevrolet
Summit Racing Part Number:TFS-31401001
UPC:842645108150
Cam Style:Hydraulic flat tappet
Basic Operating RPM Range:2,600-6,100
Intake Duration at 050 inch Lift:226
Exhaust Duration at 050 inch Lift:234
Duration at 050 inch Lift:226 int./234 exh.
Advertised Intake Duration:284
Advertised Exhaust Duration:290
Advertised Duration:284 int./290 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.480 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.495 in.
Valve Lift with Factory Rocker Arm Ratio:0.480 int./0.495 exh.
Lobe Separation (degrees):110
Camshaft Gear Attachment:3-bolt
Computer-Controlled Compatible:No


Here's the lifters that come in the kit.

Trick Flow Specialties TFS-21400001 - Trick Flow® Hydraulic Lifters and Lash Adjusters

Lifters, Hydraulic, for Flat Tappet Camshafts, Chevy



The cam isn't "bad"; just, not appropriate to an EFI motor, unless some serious tuning effort is put forth. And PARTICULARLY NOT for TPI, which requires specific properties of the cam to optimize its "tuned" (the T in TPI) effects. The tuning of course isn't "impossible", but getting it to ever run right WILL BE without it.

 

Trying to find out as much as i can on a top end kit that will work even if i do have to buy new tpi but need to figure everything out i need. i want about 400 hp fun driver

 

In that case, you're a prime candidate for an LS swap.

 

This is 2020, not 1995.

A nicely outfitted truck 6.0 would BEND YOUR MIND. Just straight outta the truck, as-is, with headers, is almost that, without any further effort. Not hard to get a LQ9 close to 500 HP with good CNC head porting and an appropriate cam.

OTOH, if you want to stick with the old SBC, you can get reasonably close to 400 with the TF kit, a more appropriate roller EFI cam like maybe the Comp "305" grind https://www.summitracing.com/parts/cca-08-305-8, and a Stealth Ram.

And also, you probably have some kinda crappy gear like 2.73, and a stock converter. You can MULTIPLY the fun factor of the car SEVERAL TIMES OVER without even opening the hood, by fixing those 2 items. In fact anything you do under the hood will be a waste without them. Those 2 things, plus exhaust all the way from the heads to the street, should be done BEFORE any engine work. Which of course the "420 HP" rating sort of neglects to mention... you don't HONESTLY think that is with stock manifolds and restrictive coffee-stirrer exhaust, now do you? How many of those horsepuckers do you suppose the stock exhaust exhaust ALONE would cork up? My guess would be AT LEAST 75, and it could be even more.

 

I will be doing headers and full system just trying to find good top end kit so i dont have to pcs it together