Head questions
Thread Starter
|
Senior User
Joined: Jan 2004
Posts: 299
Likes: 0
From: Illinois
Head questions
I finally managed to scare up the dough to rebuild my 302, thanks to the Navy.
I have been researching cylinder heads and I have seen some people say that aluminum heads are not that good compared to aftermarket cast heads. I understand that aluminum expands at a different rate than iron, so is weight reduction the only big advantage of aluminum heads. Also, has anyone ever used the World rousch 200 heads. I know these might flow a little too much for a everyday door slammer, but the 302 is turning into a 347 and I want to make sure the pistons can get all the fuel they need. I'm going to call Crane and get a cam reccomendation but I would like something around a 290 cam. Thanks
Sanders
I have been researching cylinder heads and I have seen some people say that aluminum heads are not that good compared to aftermarket cast heads. I understand that aluminum expands at a different rate than iron, so is weight reduction the only big advantage of aluminum heads. Also, has anyone ever used the World rousch 200 heads. I know these might flow a little too much for a everyday door slammer, but the 302 is turning into a 347 and I want to make sure the pistons can get all the fuel they need. I'm going to call Crane and get a cam reccomendation but I would like something around a 290 cam. Thanks
Sanders
Postmaster
Joined: Jun 2001
Posts: 4,496
Likes: 0
Well thats true take two identical heads and the iron head will make more power.
Seems racers have the cylinder head market and want less weight, so aluminum it is.
You might wanna check out AFR heads, they are about the best thing out there. The manner in which they flow cfm is just right, so the engine makes great power increases as well as retain low end torque..added bonus they are aluminum so you save weight.
Who knows? Good luck
Seems racers have the cylinder head market and want less weight, so aluminum it is.
You might wanna check out AFR heads, they are about the best thing out there. The manner in which they flow cfm is just right, so the engine makes great power increases as well as retain low end torque..added bonus they are aluminum so you save weight.
Who knows? Good luck
Thread Starter
|
Senior User
Joined: Jan 2004
Posts: 299
Likes: 0
From: Illinois
I looked at the AFR's, they seemed to be very proud of their heads. It seems like alot of people have been using them though. The World heads seem to be a good price for a very good head. How critical is engine balancing? If the motor stays under 7000 rpm's can I skip the engine balancing? What's considered a fair price for engine balancing?
Postmaster
Joined: Jun 2001
Posts: 4,496
Likes: 0
Your gonna want to balance that stroker kit...best bet...figure out which company you wanna deal with to purchase the stroker kit...determine which brand crank you plan to purchase...then contact the machinist that is going to do your work...he/she should have an idea from experience what is required to balance, on average, different brand cranks. Machine prices can vary from one area to the next, so your better off getting the actual price from the person your dealing with. Scat is known to be pretty easy to work with, eagle is a close second, and anything else is a gamble and could get pricey. Depending on the company you purchase from they may be able to offer you a balanced kit for the damper/flexplate or flywheel imbalance you choose to use. Its best to use your damper and flexplate or flywheel when its balanced.
Only thing about the world is they have large valves, the head that flows the most cfm with the smallest valve is usually the best....all about velocity.
Good luck
Only thing about the world is they have large valves, the head that flows the most cfm with the smallest valve is usually the best....all about velocity.
Good luck
Last edited by jwtaylor; Oct 4, 2004 at 11:42 PM.
Thread Starter
|
Senior User
Joined: Jan 2004
Posts: 299
Likes: 0
From: Illinois
Eagle makes a balanced stroker rotating assy. kit for a shade over a grand. I'm pretty sure I'm going to go with that. When you consider all the costs involved it seems to be the best bet. I like the Rousch heads but I may step down to the World 180's. I guess when you get right down to it I'm splitting hairs a little bit. Most of the aftermarket heads are good heads and unless I racing, which I'm not, any of them would be a good choice over stock. Thanks for the gouge,
Sanders
Sanders
