What is your budget?

 

I heard aluminum rob horse power for intaking the heat in the combustion chamber.Theres this build up 5 will get ya four in this magazine I have its what I am looking for to make on stock bottom end also.They used the dart windsors with lil done but they also milled the block for static compression

 

My buget is low but I need bang for buck!

 

400 flywheel hp N/A in a streetable 302 with a stock bottom end on a limited budget, with a 150 shot on top of that? I might be off base here, but I do not think you have set a reasonable goal. The 185's would only be a start. You need to be looking at building a high compression stroker motor with a custom cam. A pro engine bilder can give you the blueprint you need to reach the power goals you want. I hate to see you spend money on the motor, then be dissapointed when you are not making the power you expect.

Bolting AFR185's onto a freshened bottom end is going to yield marginal results. I would think the loss of torque would be more noticable than the gain in horsepower.

If your budget is low, look for some 6037's or GT40's, a Performer intake, punch the block 30 over and get it set up for 11.5/1 or 12.5/1 compression. You would need new pistons (forged) and then build a balanced motor. Then a custom cam, and you would be happy. I would think a setup like that would see in the neighborhood of 300 - 320 flywheel hp. Of course, you need the fuel system to keep up - 30 lb injectors, 190lph pump, adjustable fp regulator, and go larger on the intake side as well.

Of course, I could be completely wrong. If that is the case, ignore everything I just said and I will go back to sleep.

 

What are your goals with the engine? What kind of final results do you hope for? How much money are you looking to spend?

Until you answer these questions, I don't think there is anyway anyone can give you sound advice.

One thing I would like to suggest is once you think over your plan and set it in motion, DON'T sway from it. I've seen too many people buy a set of stage 3 heads from TEA and then assemble the engine with something like a Motorsport E camshaft because they ran out of money for a nice custom one. Don't be one of those people.

 

Well this article i was reading refers to this a 5.0 will get you 400 hp.This is done with stock rods, pistons, and crank.Also they are using the 1989 motor wich I have , the cam they are using is comp cams extreme energy 282 (565/574)(232/240) Also the intake of choice was a victor jr. Also the dart windsor heads with extrude hone power putty, the extrude improved airflow to 50cfm per runner more. Comp cams 1.6 ratio roller rockers,the carb choice was a demon 650.Now to the headers a set of hooker 1 3/4-inch and short collector extensions.

machine work includes: block clean also require minor honing.
the pistons were treated to some minor relieving for the larger valves.The short block was milled so the pistons were .005 out of the hole.(this was done to slightly increase the static compression ratio)

Reason for head choice:The reason for this was because aluminum heads tend to absorb and dissipate the heat generated in the combustion chamber.
Also milling the heads .050 to get the compression ratio of 10.8:1 roughly

ignition: msd billet distributor was set at 36 degrees total advance.With a digital 7box

CSI electrical water pump was added also a wilson 4 hole spacer

results:
rpm hp tq
3000 164 288
3200 182 298
3400 199 308
3600 215 314
3800 233 322
4000 256 337
4200 277 346
4400 298 355
4600 314 358
4800 330 362
5000 346 364
5200 364 367
5400 380 370
5600 393 368
5800 401 364
6000 407 356

 

not bad for a stock mustang motor lol

 

Thats a HUGE cam and a HUGE intake.
Crappy street motor.

 

In the article the said it would be one of the best street motors they have built.