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Topic Review (Newest First)
02-09-2013 08:42 PM
F-BIRD'88 a really good cylinder head for you.

not your only choice but one of the better choices
summit cylinder head pn SUM-162111.
google it.

Summit Racing - Performance Car and Truck Parts, Accessories and More!
02-09-2013 05:51 PM
Slammedsi
Quote:
Originally Posted by vinniekq2 View Post
are you taking the engine out to do the heads?
I like dart/AFR and some edelbrock heads,we just need to match the flow to the cam and requirements.I would take the engine out and regasket/seal engine,pick a cam(roller hydraulic) and small runner heads that fit your needs,IE: E-tecs/dart SHP or equivalent.
No motor is staying.
02-09-2013 01:39 PM
vinniekq2 are you taking the engine out to do the heads?
I like dart/AFR and some edelbrock heads,we just need to match the flow to the cam and requirements.I would take the engine out and regasket/seal engine,pick a cam(roller hydraulic) and small runner heads that fit your needs,IE: E-tecs/dart SHP or equivalent.
02-09-2013 06:50 AM
Slammedsi
Quote:
Originally Posted by Slammedsi View Post
Bottem end is bone stock from a 85 suburban . Im not sure what came stock.
Sorry for the double post. My phone dosent like me haha.

Does anyone know what cc chambers a late 80s 350 head has?
02-08-2013 09:47 PM
Slammedsi
Quote:
Originally Posted by hcompton View Post
185-195 cc runners will support 400 hp. i would go for 195 but smaller is often better for street cars.

You can find compression ration calculators on the net. Do you know what type of pistons you have.

For a chevy 350 the std bore is 4.00 inches stroke is 3.48 inches head gasket is 4.1 bore and .041 compressed thickness. Rods a 5.7 inches.

Now the hard to find out info is the piston cc and the deck height. Deck hieght is how far down in the hole the pistons are at tdc.

Do you know what type of pistons you have?
Bottem end is bone stock from a 85 suburban . Im not sure what came stock.
02-08-2013 09:34 PM
hcompton
Quote:
Originally Posted by Slammedsi View Post
Bottem end is bone stock from a 85 suburban . Im not sure what came stock.
I dont have a clue. It could have flat tops or dish or the dreaded beveled flat top dish pistons.

Pistons, rings and rod bearings and rod bolts would not be a bad idea if you got a few extra bucks. Depending on how many miles are on it. Rod bolts really strength up the bottom end if you plan to abuse it they are cheap insurance. Flat tops are usally cheapest and will let you get into the correct compression ratio for the cam to really make the engine pop off.
02-08-2013 09:23 PM
Slammedsi
Quote:
Originally Posted by hcompton View Post
185-195 cc runners will support 400 hp. i would go for 195 but smaller is often better for street cars.

You can find compression ration calculators on the net. Do you know what type of pistons you have.

For a chevy 350 the std bore is 4.00 inches stroke is 3.48 inches head gasket is 4.1 bore and .041 compressed thickness. Rods a 5.7 inches.

Now the hard to find out info is the piston cc and the deck height. Deck hieght is how far down in the hole the pistons are at tdc.

Do you know what type of pistons you have?
Bottem end is bone stock from a 85 suburban . Im not sure what came stock.
02-08-2013 09:13 PM
hcompton
Quote:
Originally Posted by Slammedsi View Post
See thats where I get lost. I dont know enough about chamber and intake runner size. Do I go with a 64, 70,? Bigger? Haha I get way to lost. Also what does the chamber size do to the compresion?
185-195 cc runners will support 400 hp. i would go for 195 but smaller is often better for street cars.

You can find compression ration calculators on the net. Do you know what type of pistons you have.

For a chevy 350 the std bore is 4.00 inches stroke is 3.48 inches head gasket is 4.1 bore and .041 compressed thickness. Rods a 5.7 inches.

Now the hard to find out info is the piston cc and the deck height. Deck hieght is how far down in the hole the pistons are at tdc.

Do you know what type of pistons you have?
02-08-2013 08:36 PM
Slammedsi
Quote:
Originally Posted by hcompton View Post
Edelbrock, dart, world products or brodix all make a good cheap aluminum head these days. 1500 you can have ypur pick. Profiler also look good but havent seen a set yet. If they are as good as the pix on the net they should run as good as any of them.

Cam should support your power goals and combo. They do like compression but power is not hard to come by with the thumpr cams. They are peaky and other cams can provide a wider power band but not a bad choice. If its in and working then use it. 1.6 rockers may help a little with your power goals if your springs will support it. With the bmt and good heads 500hp is normal with proper setup. 400 from the mid range mt should be very possible.

Procomps would probably the cheapest alum heads that would do the job. They are about 600 a set bolt on ready.

Vortecs could also do the job for even less. Under 500 a set for rebuild heads.

Shoot for atleast 9:1 compression.
See thats where I get lost. I dont know enough about chamber and intake runner size. Do I go with a 64, 70,? Bigger? Haha I get way to lost. Also what does the chamber size do to the compresion?
02-08-2013 08:16 PM
hcompton Edelbrock, dart, world products or brodix all make a good cheap aluminum head these days. 1500 you can have ypur pick. Profiler also look good but havent seen a set yet. If they are as good as the pix on the net they should run as good as any of them.

Cam should support your power goals and combo. They do like compression but power is not hard to come by with the thumpr cams. They are peaky and other cams can provide a wider power band but not a bad choice. If its in and working then use it. 1.6 rockers may help a little with your power goals if your springs will support it. With the bmt and good heads 500hp is normal with proper setup. 400 from the mid range mt should be very possible.

Procomps would probably the cheapest alum heads that would do the job. They are about 600 a set bolt on ready.

Vortecs could also do the job for even less. Under 500 a set for rebuild heads.

Shoot for atleast 9:1 compression.
02-08-2013 07:39 PM
bygddy
Quote:
Originally Posted by Slammedsi View Post
Ive got 1, 100 set aside for a set of assemble heads. I would like a set of aluminum heads but quality irons would be fine too. I really dont want to have to have a machine shop do work to a set. Would much rather buy a ready set and slap them on.
Pro-Filer Performance Products
1054 plus shipping.....Google them, and go from there.
02-08-2013 07:29 PM
Slammedsi
Quote:
Originally Posted by ap72 View Post
really, your power goals are very modest, a set of freshened vortecs will get you there, BUT they are nothing compared to a set of decent aftermarket heads. Your budget will dictate a lot of that.
Ive got 1, 100 set aside for a set of assemble heads. I would like a set of aluminum heads but quality irons would be fine too. I really dont want to have to have a machine shop do work to a set. Would much rather buy a ready set and slap them on.
02-08-2013 07:16 PM
ap72
Quote:
Originally Posted by Slammedsi View Post
Yes, I know the cam is not best suited for this job but I have a some money to blow on heads right now. After I get done with heads the cam will be next..
really, your power goals are very modest, a set of freshened vortecs will get you there, BUT they are nothing compared to a set of decent aftermarket heads. Your budget will dictate a lot of that.
02-08-2013 06:54 PM
Slammedsi Double post...
02-08-2013 06:49 PM
geezer69 your goal is not a problem. you can do it purdy easy with iron heads. vortec or even the old double hump heads would work with some work. im sure theres a number of purdy cheap heads that will do it for you.
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