355cui, 9.3 comp, Free flow exhaust,TES headers ,Ported D-shape vette heads, 1.52 RR, ZZ-9, Big mouth, AS&M LTR, ported plenum, 52 mm TB, MSD 6AL, Prom , All the minor mods...and a 9 psi procharger. What do you guys think?

 

I don't think so. 355 8.0 comp, slp 1 3/4 headers, afr heads, comp cams blower grind cam, 1.6 rockers, Miniram intake, 58mm tb, msd digital 7, 30 lb./hr. injectors and about 15 psi of intercooled boost.

 

i'm with the last guy i dont think so either, maybe at the flywheel???

------------------
1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 heads,350 horse cam,bored.40 over, Edlebrock torker2 intake.

Future mods 400 performer rpm intake (polished) and 600 edlebrock carb, comp roller cam, and way better heads. orpossibly a 383 stroker?

 

If I go with 383 cui and no other changes, the heads will probably not flow enough with 383.

 

I think a set of afr's will flow enough for a 383. Mabey you should look into some brodix heads.

 

Since you're in Sweden, find out what Saab does to wring so much power out of its four cylinder engines. There will be your answer.

It's very difficult to make a 2 valve cylinder head breathe like a 4 valve head. I would also believe that Saab, and most race engine builders, get into very sophisticated acoustical tuning of the intake and headers. If the intake and headers are resonating at the same RPM, you will get a substantial increase in power, BUT within a limited RPM range.

500HP from 355 or even 383 cubic inches would be a b*tch to live with every day. If it's possible for you, I'd rather try and get that 500 HP from a 454 big block and then swap that bad boy in, bolted to a TH400. 500HP from a 454 would be EASY and driveable!

 

You have to remember the engine is running under boost,if those heads are extensively ported he will come close to his goal

------------------
89 FORMULA 350,WS6 SUSPENSION,HOTCHKIS STB,KONI REDS,WONDERBAR,SLP REAR CONTROL ARMS/PANHARD,POLY BUSHINGS,FRESH 355 MOTOR,TCI 12" STREETFIGHTER,TRANSGO SHIFT KIT,3.70 GEARS,FLOWMASTER EXHAUAST,SLP 1 3/4 HEADERS,NO CATS,58 MM BBK,MINIRAM INTAKE,COLD AIR,ALL FREE MODS

 

I have one word about SAAB engines, TURBO. Here in sweden Turbo cars is very popular and very fast!!! So I need more power to show some real american muscle and the power of a V8.

 

how much will all that stuff cost though just as an estimante and could you make a supercharger put out more psi than it is sposed to?

 

Ok. I'm planning a rebuild in april and just curius how much power i will get. I have all the stuff on my car today so it will be just a rebiuld for my future SC, but maybe I should go for 383 and some other heads? if its not to much x-tra $$$$.

The car is a daily driven cruiser, not to be forgotten.

------------------
GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods. and more to come!
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)

 

FYI, afr's flow more than brodix

 

Afr's flow better than Brodix? I don't think so, have you seen the upper end brodix heads they will murder afr's.

 

Hate to burst your bubble, but the AFR's outflowed the BRODIX heads. Now if we are talking about the "big" brodix heads then all we do is talk about the 210cc fully ported race heads from AFR, and then again the BRODIX loose! either way you can beat AFR's. I have a flow sheet right here that shows the flow numbers from various companies and the AFR's out flowed them all out of the box. Now with work on them... need I say more..


------------------

 

Here are the specs for proof. These are the 190cc heads.


Valve Lift AFR Brodix

.200 144 125
.300 208 177
.400 244 220
.500 262 254
.600 261 226

the proof is in the puddin!



------------------

 

sounds good to me!

------------------
1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 heads,350 horse cam,bored.40 over, Edlebrock torker2 intake.

Future mods performer rpm air gap intake (polished) and 600 edlebrock carb, comp roller cam, and way better headsa 400 defintely in the works!

 

like i said....