i have a 85 360 small block i am wanting a to know about how much horse power it will produce i have an xe268h cam with 477 480 lift 264 duration a edelbrock performer intake holley 4barrel 650cfm mechanical secondarys k&n airfilter with hood scoop summit truck headers dual 2.5 exhaust it has a518 tranny with stage 2 shift kit and dana 60 4.10 gears its going in a 85 dodge ram thanks ahead of time

 

280-300 hp

 

Run the numbers with Camquest software. Free download here.

http://www.camquest.com/

 

Not sure how much you would like to get but I have heard that the heads can be restrictive. Maybe look for a set of J or X heads to rebuild and swap on at the same time. I believe that those are the letter code for the good heads, I may be wrong though.

 

thanks for the information and it wont let me do the comp cams dyno and i have heads but not j or x and i already had them redone so dont have the money to buy x or j heads

 

If the heads are not on the motor yet, you can work on cleaning up the portd to help them flow better.

 

I ran your combo with a small one and a bigger one.

20-221-4 XE 256H = 309hp 409tq

20-224-4 XE 274H = 328hp 380tq

 

Those are some respectable numbers right there!

 

thanks again and yeah those numbers are perfect and to port the heads is that fairly easy and can i do it by myself and i heard that porting them is not realy worth it

 

A light touch-up of any sharp edges and a port match dosn't take much time and will help. Aggressive porting should go along with bigger valves, then a compression increase with pistons, your getting into the Hot Rod engine territory.
With smallish ports and valves the velocity is higher creating your low end torque. It really depends on your useage and where you want to make power.

 

i want more low end torque and i ahve an intake it a edelbrock s.p2p. 318 and on the bottom 3475 is that a good intake or whats a better one for low end power thanks

 

I would only use that manifold if it was a stock cam and untouched heads, anything more will be choked off. The cast iron Mopar 4bbl manifold would be good on the 360, the Edelbrock Performer would be best. Stay away from the RPM series.

 

ok thanks i will buy a performer then and sell my other intake you wanna buy it haha

 

Thanks, but I already have one in the collection.

 

haha ok thanks for all the info it was greatly apreiciated