Bluem

how much hp can a 13b 4-port put out?

with headers
weber carbs rb(51 adi)
and large street port

ioTus

iTrader: (5)

I'm guessing up to 220 if you tune it very very very very well.

I'd go for 180-190 to start.

But i've never done one personally, thats just a guess.

Jeff20B

iTrader: (13)

180HP is doable.

DriveFast7

iTrader: (1)

Ditto. And more with excellent tuning, well done exhaust and attention to detail.

Zeta-Gouki

Why don't you remove the huge white borders in your sig?

It takes up like 40% of the space.

bill Shurvinton

Assuming you are meaning the 9.4:1 CR 4-port and we are talking flywheel HP, if you get less than 210 you have done something wrong.

I had 160 off a stock engine with a 45 DCOE and a rediculously long inlet (don't ask that's how I bought it). Power was seriously dropping off by 6000 RPM. Now it's been ported and modded and as soon as I can get the inlet matched up and a few other jobs, will fire it up.

Bill

killjoy7

iTrader: (6)

I have a 1974 4 port 13b from a REPU with 89 rotors, webber 48 IDA, big street port and racingbeat dual exhaust in my 80 SA.

Dynoed at 168 rwhp even with a horrible miss at max rpm which was crummy arcing spark plug wires. (it's the big dip at the top of the graph)
I'd say my motors good for 200-210 flywheel hp.

car here: http://users.rcn.com/brandyc/fb.jpg

engine: http://users.rcn.com/brandyc/3.jpg

dyno slip: http://users.rcn.com/brandyc/DYNO.jpg

-tony