Bang-for-the buck Performance SBC street heads?

[A HotRod]

If the flat top pistons are .025" below the deck at TDC on that motor
then simply mill the 72cc heads to say 69cc and reinstall using a thing felpro 1094 .015" steel shim head gasket
The new cr will be 9.8:1.

You could also work with the low compression ratio and add a lil supercharger to that motor.
You'd really like that on that car.
with the low 8.9:1 cr use a .041" head gasket. You are all set for moderate boost on pump gas
and lots of power. A simple Comp XE274H-10 hyd cam will rock with the blower.
A generic (Summit #1105) 224-234- .465-.488 114 hyd cam is great for this
Either of the 230deg cams you got now are fine too.
Hell the lil hyd roller cam that is in it is fine for this.
Again a little porting sweetens up them good heads.

Weiand 142-144 blower,, Weiand 177 blower. EATON/Magnuson/TFS MP-122hh "Magnacharger" blower.
750 to 950 carb. enjoy.

Modest easy 5-6psi boost to get 430-450 HP and you can crank it up well beyond that with more pulley ratio
with any of these lil street blowers. The Eaton/Magnuson us the most efficient,
You got the car and low cr engine for this. You will really enjoy this combo.

Your full of bad ideas for me

Thank You for the information on milling the heads and using the thinner FelPro gaskets, that is very helpful.

Glenn

[F-BIRD'88]

Another path using the 72cc heads is make that 355 into a 383 using a 3.75" 383 scat crank engine kit with flat top pistons The CR will be right on 10:1. You'd really enjoy the extra torque of a 383 with the mild converter and 3.50 gears. Use those 72cc heads with a bit of porting.
if you want to keep the mild 2400 stall converter keep the cam duration mild. 222-224 #.050" ish
Use Performer RPM intake and a 750cfm carb. Dual quads would be very cool on that car too.
Using the recent Edelbrock Performer RPM air gap Dual Quad 2x4 intake manifold and say 2x600 eddy carbs.
A Isky #201274 274H Mega cam is just right for this.
If you still got the 230deg Hyd roller cam it is fine too for this Dual Quad 383 stroker motor.
Again you got the right car for this.
All those WP SP II heads need is a lil love to get them ready for any of these combos.

[cjperformance]

Trickflow 195 23deg. 62cc chamber. Imo these are really good bang for buck especially if you just want something you can buy, wipe (i strip/check everything but these have been fine) and fit with no fitting problems.

[rfoll]

I like the suggestion of a 383 kit and keep your heads. Way more power for the cost involved. https://www.summitracing.com/search/par ... ing%20Kits

[shoedoos]

Had a look at ATK heads?

http://www.speedtalk.com/forum/viewtopi ... =1&t=49461

[Frankshaft]

Didn't see he had those heads already. That's what I would use.

[ProPower engines]

Your full of bad ideas for me

Thank You for the information on milling the heads and using the thinner FelPro gaskets, that is very helpful.

Glenn
[/quote]

Just so you know you can go more then .040 off those heads. I have done .100 flat and .040 angle then .030 flat ( rules) but they can get more then .040 off as world stated that because they had a stock replacement designation for NHRA and other race organizations that used them as a spec head.
But you can still wack a bunch off and still use the steel shim gasket if needed.

[gnicholson]

Your full of bad ideas for me

Thank You for the information on milling the heads and using the thinner FelPro gaskets, that is very helpful.

Glenn

Just so you know you can go more then .040 off those heads. I have done .100 flat and .040 angle then .030 flat ( rules) but they can get more then .040 off as world stated that because they had a stock replacement designation for NHRA and other race organizations that used them as a spec head.
But you can still wack a bunch off and still use the steel shim gasket if needed.
[/quote] when in doubt wack off a bunch

[A HotRod]

Had a look at ATK heads?

http://www.speedtalk.com/forum/viewtopi ... =1&t=49461

I was not aware of these...... Thank You

[A HotRod]

Just so you know you can go more then .040 off those heads. I have done .100 flat and .040 angle then .030 flat ( rules) but they can get more then .040 off as world stated that because they had a stock replacement designation for NHRA and other race organizations that used them as a spec head.
But you can still wack a bunch off and still use the steel shim gasket if needed.
[/quote]

Thank You

[user-612937456]

Lets see he ask for Bang-for-the buck. He already has World Sportsman II he only wants to make 430 HP? A basic pocket porting and a good seat job should be a cakewalk. 220 cfm at 10-1 compression should get you over the 430 HP mark. 272/.470 cam at 108 should be a good cam for nice and streetable combo. With a nice flat torque curve

[rocketracer380]

I'm building a tight quench eq ch350c heads 10:1/2 :1 comp gm eliminator intake and a solid f/t cam shoot for 460 hp plus I've seen builds with hr cams and dual planes make 425,447 and 460 plus all on pump gas

[Keith Morganstein]

In your opinion, what Performance cylinder head for a SBC 355 engine that one would like to make 430 HP or more streetable power and torque from, that would be considered affordable?

Current heads on it are World Sportsman II - Stock

Glenn

For bolt-on "bang for the buck" it's hard to beat a set of AFR 1034 195cc street eliminator heads for $1650. (65cc chambers, come set up for Hyd roller) Those coupled with Jones custom made Hyd roller, will yield absolutely explosive performance on your 355.

[rocketracer380]

I agree those afr's are very nice heads make great power I like to see what I can make with all gm parts so I can brag it's all gm parts if it's a turd I'll just blame it on all gm parts my heads cam block rods and pistons we're all spare parts around the shop even the cometics roller rockers and valve covers block is decked heads are at 58cc, quench is at 44,.comp about 10:5:1, I'll start at about 32 degrees and work from there. i found the intake on CL for 150 to ditto this motor it would easily cost me 4,000 + I'm into it for Penny's some machine shop labor a pump and t chain and a couple of gaskets if it makes 425 to 450+I'll will be happy i have a choice of 3 hr cams ranging from .520" .560" and 600" but I like to rev my SBC to at least 6800 so I might splurge on a crane solid flat .533".555" on a 106 have them grind it on a 108 or advance it 2 degrees or I'll just save my money and run the hr .542" .560" ive had some experience with those crane f9 lobes I like them.the next step would be 195,afr or bowtie vortecs 225's but I'm out kinda cheap, wish me luck!

[kimosabi]

In your opinion, what Performance cylinder head for a SBC 355 engine that one would like to make 430 HP or more streetable power and torque from, that would be considered affordable?

Current heads on it are World Sportsman II - Stock

Glenn

For bolt-on "bang for the buck" it's hard to beat a set of AFR 1034 195cc street eliminator heads for $1650. (65cc chambers, come set up for Hyd roller) Those coupled with Jones custom made Hyd roller, will yield absolutely explosive performance on your 355.

Jones makes a nasty camshaft for sure even though the spec numbers might seem mild. I agree on the AFR's too because the pricing for heads looks to me like they are evening out. You just don't find much price difference between the good heads anymore. $1650 is not a whole lot for a real good pair of heads with all the bells and whistles installed. Probably not even worth going through catalogues to find individual parts anymore, they have things figured out. Just disassemble, inspect, check, assemble and go.