I have a question about a couple of heads.
Right now I have 882's on my 355 probable only have about 8.5 compression.

I was wondering if a set of 416 305 heads would be worth the increase in compression even though they have smaller valves.

I also have a set of 193 heads, I don't know if these are worth using or not, I don't know what size CC they have, and I know they have the different angle on the intake bolt.

This is just a street small block and I'm trying to see what I can do with the least amount of money. I know Vortecs would be the way to go but I don't have the funds for that right now, and I have access to these other heads.

sorry so long thanks for any info, graemlins/beers.gif
Mert

Forget it Mert. If Chevy ever built a total pile of junk it was the 305 cyl. head. Not even worth the thought process of installing on your 355, not to mention the cost of gaskets. Save your money and put on the Vortec's, or pro-action has some real nice 50cc chamber heads for around 900/pair if your looking to boost compression and they are 2.05 with 200cc ports--more power :D

I have a friend running mid 13's in a 3200# Camaro with a 882's on a flat top 355 and a .500 lift solid that he had on a shelf. You can do ok with the 882's.

In the last issue of National Dragster, Competition Products has an ad with what sounds like just what you need. Pro Topline Pro Torker 67cc heads for $499. They are iron street heads that should work great for what you want. 2.02/1.60 valves, 167cc ports, 67cc chambers, and they will use your existing valvetrain parts, valve covers, and intake manifold (unlike Vortecs). Should bolt right on as replacements. They are much like the World Product SR Torquer, which are very much like the old camel hump heads. Take a look here Competition Products (http://www.primediapowerpages.com/cgi-bin/ePages7.filereader?3ff7bf9100532aee0000c0a80142061 1+EN/products/100216&2D1007246). For what you want, I don't think you can do it for less and still be happy. A few years ago, I gave $650 for WP SRTs. Note: the ad in ND says 67cc, the OL catalog at CP says 64cc. I'd call to find out which it is.

The SR's are 67 & 76cc chambers & my suggestion is if you buy the complete assemblies, when you get them dissasemble them & check everything including guide clearances before you bolt them
on.
My choice assuming you do not own a machine shop is if you can, get them in "ready to assemble kits" so you can check clearances, valve contact spring hgt. etc. before putting them together.
We have had a few problems with the guides being on the small size, especially on the aluminium lightning stuff & if you have to hone them regardless of what people tell you, chances are you will need to have the seats redone.
That's assuming you would prefer them concentric with the guides :D
Just for info, I have already had one customer buy a set of Lightning's from a "well known mail order place" & "save" about $80 from what I could do the heads for with Ferrea vlaves etc. & it stuck an intake valve in about 100 miles :(
He now has all new Ferrea intake valves & about $350 more in the "good deal" heads.
Too be fair I have not seen any of the SR's with a guide problem
I am not saying you will have a problem just saying to take them apart & check everything.
There are only two places I will buy complete heads from.
AFR & Brodix. Quality parts & Excellent attention to detail in assembly.

193s are the ultimate garbage. Swirl-port TBI grocery-cart crap. Throw them away. They don't even make good boat anchors, because they don't enough have projections to catch the bottom.

416s are OK. With 1.94" intake valves properly installed and the chambers unshrouded correctly for a 4" bore, they flow nearly what old double-humps did with a similar setup, and have 6cc less chamber.

Problem is, by the time you pay somebody to cut the valve seats, install the valves, port them, etc.; and then buy valves, studs, guide plates, enlarge the spring pockets and cut the guides for seals, etc. etc. etc., you'll have as much or more money in them than you would in a set of new aftermarket castings with better quality control.

But if you can do alot of the work to them yourself, the 416 is a decent enough starting point.

Incidentally, the 416 was the 85-86 305 TPI casting, as well as the LG4 and L69 casting from 82-86. 081 is the late LB9, L69 and LG4 casting, from 87 up, with the 72° center intake bolt angle, self-aligning rockers (usually), and the center bolt valve covers.

Originally posted by Pat Kelley:
In the last issue of National Dragster, Competition Products has an ad with what sounds like just what you need. Pro Topline Pro Torker 67cc heads for $499. They are iron street heads that should work great for what you want. 2.02/1.60 valves, 167cc ports, 67cc chambers, and they will use your existing valvetrain parts, valve covers, and intake manifold (unlike Vortecs). Should bolt right on as replacements. They are much like the World Product SR Torquer, which are very much like the old camel hump heads. Take a look here Competition Products (http://www.primediapowerpages.com/cgi-bin/ePages7.filereader?3ff7bf9100532aee0000c0a80142061 1+EN/products/100216&2D1007246). For what you want, I don't think you can do it for less and still be happy. A few years ago, I gave $650 for WP SRTs. Note: the ad in ND says 67cc, the OL catalog at CP says 64cc. I'd call to find out which it is. I'm in the middle of my engine break-in with world product heads. be careful you don't pull an idiot like me and only order ONE head from jeg's :rolleyes: . I didn't know you could get only ONE head. that seems silly. the final total was around $750 I think. graemlins/thumbsup.gif
Zac

The ad in ND did say a pair.

Imho, the -416's with no more then a valve job if needed or a good lap job if not and new seals along with a good old CC 268HE cam will make a dandy MILD street motor to get you by until funds are better..

pdq67

I guess what i was really trying to figure out is if the increase in compression would be worth it with the 305 heads compared to the 882's

I'll probably wait to buy some good heads until I build a new engine.

Thanks for everyone's input
Mert