Floorman279

does anybody know how good the edelbrock's version of tpi is? Will you get the sane results using a stock tpi thats been ported? here is the link for those who don't know what i am talking about. also is it worth the money or should i just stick with HSR? since it should be around the same price as HSR's

http://store.summitracing.com/partde...5&autoview=sku

strc09

iTrader: (5)

I'm using a ported Edelbrock baseplate and SLP runners. It's not a bad intake, but you'd probably be much happier staying with the HSR.

Floorman279

well i just know that edelbrock's tpi is a very simple installation. Also, does porting/more flow decrease mpg?

strc09

iTrader: (5)

I would say that with more power comes less fuel economy in town. Open road where you can cruise shouldn't be affected much. Most TPI cars, I believe, only got about 20 on the hwy and 14ish in town if that. Anyone have their factory window sticker?

DZcode

If you're switching to anything, do plenty of research. There are lots of little issues about fitmet, cost and performance that can pop up.

If I had done more reasearch, I would have gone TBI for my 1969 Z28 406CID engine swap instead of TPI - a whole different issue I know. I 'm using Lingenfelter/Accel base and SLP runners.

If I were to do another TPI for performance, I would go HSR or single plane intake EFI. Most aftermarket TPIs bases have the EGR if your state requires it for smog inspection. HSR does not. IIIRC HSR hits a hood reinforcement on the firebird? Are your heads and cam going to use all the HSR can provide?

http://www.stealthram.com/

Floorman279

plan on getting edelbrock performers and an xfi comp cams

DENN_SHAH

iTrader: (1)

$745.00 with no throttle body or plenum? ouch.

you can pick up a FIRST TPI intake for $1000.00, and it comes with a TB, plenum, runners, base, and fuel rails. plus it will out flow that base and those runners right out of the box.
the down side with a FIRST, you will need a fuel pressure regulator, rework your fuel lines, and maybe have to mod the throttle cable.

Floorman279

what is a plenum?

DENN_SHAH

iTrader: (1)

its the big piece the throttle body bolts to on top between the runners.

Floorman279

i think they sell it without the tb and plenum becuase you're supposed to use your stock ones. yea i figured that out myself right after i last responded. thanks though.

DENN_SHAH

iTrader: (1)

no problem

Floorman279

does anybody know if you can use the stock plenum with the edelbrock setup?

SilentBobZ28

iTrader: (5)

You can use the stock plentum with the edelbrock base and runners. The only porting I really had to do to my plentum was open it up for the dual 58mm throttle body.

brians88gta

go with the hsr its a much better set up

Floorman279

i cant becuase pa requires visual and it doesnt have a spot for the egr valve