browsing thru my catalog i got from summit racing..... trick flow is making a new head with 58cc combustion chambers and 175cc intake ports. 1.94/1.50 valves and priced at about a 1000 bucks. sorta like a new vette head but probly flows alot more with room to port. wonder how they flow as i cant find any info on them from the trickflow website... Looks like building a solid running 305 will now be more of an option for alot of people. LOL i know i would just to make a fast 305.... what do you guys think?

for $1000 PER HEAD i'll pass and port my 416's.

I agree. Maybe if they were 1k for a set people would look at them seriously. There is no reason to not consider them for a 350 though.

Actually it's more like $1,100 A PAIR and not per head.

no, i called summit, they want 1009.99 per head

well they should be wrong cuz its listed at 1000bucks A PAIR

its just the 23* head with smaller ports and chamber.

how is that going to be 1000bucks a head????

might wanna call them again

If they are 1k a pair then they would be the cheapest aluminum aftermarket set of heads ever created. I bet they are 2k for a pair.

look again bro, summit lists them as "each".

just called summit and their sales rep. said that the heads are $1005.95 per set, but there website is wrong that lists them as each. And they wont be in until March.

really? i called them a few weeks ago and they said they wanted 1005.99 PER SET

not that i don't believe you, but i think i may need to call them and see for myself, just for my own sake. i am building a crazy small bore 305 based motor, and i would really like these heads for it, but am a little apprehensive because of the price. but i could dump $800 in machine work and hardparts to get what these heads have outta the box.

I talked to a guy named Adam he said the website is incorrect, and lookin at the big block TFS chevy heads are $1995 /pair. The 305 is starting to get some love

just got off the phone with the guys at Summit, they are infact $1005.99 for the SET. anyone who feels like they need to donate to the "make matt's 305 fast" fund, just let me know, i will take cash/check/debit/credit/paypal/cashiers check/money order.

Woohoo!

yeah, i got them in front of me now in the catalog. per set....

pretty sweet heads. i hope they are one of the best flowing heads in that port size, cuz for the price that aint too bad

afr 180's could work on 305 but the chamber is 68cc and would need milled or higher compression pistons.

vortecs arent bad either once cleaned up.

but its another great option

problem with those heads though is that you have to spend more money after you buy them to make them work. i like taking stuff outta the box and putting it on my motor and having it work.

Correct me if I am wrong, but the AFR 180's have large valves, unlike the mentioned trickflow's with 1.94/1.50 valves which are perfect for a 305.

If I were to run an aluminum head on a 305 I would want the chamber size to be smaller. 58cc is ideal for an iron head. I don't want 9.3:1 with an aluminum head. Defeats one of the benifits of them. Seems like these heads were desinged for a 350 since only a handful of people will actually use them on a 305.

Really wake up an old smogger 350 though. Reasonable price for complete alum. heads these days. Wonder if they work with standard intakes?

yeah good point on the compression but possibly you would need to buy some higher compression pistons. not sure whats out there tho. possible to mill it down to 54cc or so?? that should bump it up to around 10 to one.

but it would make a nice nitrous/blower head as is for mild boost applications...

they recommend this head for 283's 327's 305's and milder 350's.

mmmm, boost, you read my mind brotha.

hmm $1000 for some alumin heads for my 305. i think after i get my turbo kit these will be boughten and then entire top end rebuild if not full rebuil;d on the 305 might happen, then more boost will be put into the 305.

To paraphrase someone else on this board, aluminum heads for a 305 sounds like a complete waste of perfectly good beer cans.

With that said, if my 305 was still healthy enough to handle those upgraded heads (upgrading the top end without beefing up the bottom increases the risk of blowing out the bottom end), which it isn't, I could always transfer those fancy, expensive heads to my new 350. (You aren't going to replace that 305 with yet another 305, are you?)

As long as they weren't damaged in the engine failure that required the new engine.

my 305 bottom end is already pretty much bullet proof(forged rods, nice hyper pistons) and why wouldn't i replace it with another 305? (or 305 based motor?)

muuuwwwhhahahaha(evil laugh!)

oh, i got flow numbers from Trickflow on these heads, tell me what ya think!

Lift Int. Exh.
.150 99 77
.200 126 102
.250 150 115
.300 175 128
.350 194 142
.400 213 153
.450 230 166
.500 240 170
.550 240 173
.600 240 178

oh, and $969.95 for the heads with the older style intake bolt holes is hardly expensive for aluminum heads.

this ones gonna be at the top for a while.

i'm gonna go to summit and have a look. anyone know if these will bolt up to a tpi manifold?

ive been lookin on summit and cant seem to find them.

same here. anyone got the part number?

pre 87 heads with 1.25 inch springs
TFS-30300001

87-95 heads with 1.25 springs
TFS-30300005

pre 87 heads with 1.47 valve springs
TFS-30300002

87-95 style heads with 1.47 springs
TFS-30300006



those flow numbers are looking good... should make a great performance 305 head. stock L98 vette heads can be picked up used for less and ported to match flow i bet, but after all that with new springs and valves and such, you could spend close to a 800-1000 so why not spend some more on a out of the box head....

p/n 30300005 is for 87+ $1005.95 pair. summit sites says each, but i have called twice to confirm that it is for a pair

p/n 30300001 is for pre 86 and are 969.95 a pair.

it's also listed in the new catalogs and is "recommended" for the 283/305/327/350 for mild to moderate performance.

also, these have lots of meat for more porting if you ever want to go faster. as where yes, a 416 or 113 or 081 head CAN be made to flow those numbers, they are about maxed out, this head has more potential.

I currently have a 350 with 9.1 compression with 64cc heads. I'm putting a Hot Cam and HSR intake I was gonna go with some 200cc Iron Eagles. I was going to stick with iron heads cause of my lower compression. But with the 58cc chambers of the Trick Flows my compression would raise which is a good thing. But do you guys think the 175cc intake would be good enough for my combo?

Thanks
Frank

those iron eagles are good to like 550hp without porting. (that's about what my fathers is making with them) and they are cheaper. the only reason i am considering these heads is cause of the small bore size of the 305.

i cant find these heads in their online catalog?

Jegs has 58cc World heads specificly for the 305 that are 375 each. I put them on my 335 and love them. All I had to do was take them out of the box and bolt them on.

yes, but they are iron, and have a smaller 170cc intake runner as opposed to the 175cc intake on the TrickFlows. and the TrickFlows are aluminum. and really, they are only like $250 more.

this is true, the only thing I wouldn't like about the trick flow is the lower compression ratio

it really isn't that much though. i don't think it's going to lower it a full point like people claim.

i'm going to just end up doing some 416's up anyway.

I just don't underatand why anyone would want 9.3:1 with an aluminum head. These heads would be great on a 350 but I just can't see spending any money on a 305 with miss matched heads. Now if you could run 9.7:1 to 10.0:1 that would be different.

i think the power difference between 9.3:1 and 10:1 is around 3% and the 9.3:1 will take 8lbs of boost way better than the 10:1 will.

I'm still trying to decide on these heads too. One thing I have decided on is that the 200cc Iron Eagles would have me lose some lower end power. So now I'm thinking of the 64cc chamber 180cc Iron Eagles and the Trick Flow 58cc's.

My engine is a GM Crate, it's the same as the Vortec 350 but with different heads. Here's the engine.
http://www.sallee-chevrolet.com/Chev...ckV8s/300.html
It makes the 9.1to1 compression with dished pistons and 64cc heads and a .028 head gasket.

I'm going to be running a HSR and Hot Cam with this engine.

I've talked to a few machine shops and they have said it does not matter what compression you run with aluminum heads. I'd assume they would know what there talking about. Oh well it's still up in the air for me. Any help would be great.

Thats true but that is the whole point of aluminum heads. You want the most managable compression you an get. Every one point of compression is a roughly a 4% power increase. I don't know why you would use a part and not take full advantage of what is was designed for. Its like buying a 9" wide rim and using a 225 tire on it.


If you want to run 8lbs of boost you wouldn't even want 9.3:1. That is in the 8.3:1 to 8.5:1 range. No one in their right mind would boost a 305 and if they did they wouldn't come near 8lbs. They would also use different heads all together.

These heads seem great for a 350 and look to be a better alternative than the aluminum L98's and fastburns.

I totally agree with you. That's why I've been looking into the Trick Flows. With the 58cc chambers I'm guessing my compression would be about 9.6to1. I just want to find a decent head for my combo.

For your combo they would be a good choice. I think you would be happy. 9.6:1 would be a bit on the low side for an aluminum head but it is not that bad. Plus, you will have a great amount of weight savings, and future port work with those heads.

shifty, i would think of runnin a 305 on boost but more than 12lbs LOL your not thinkin big enough LOL

if your gonna boost a V8 might as well go over 10psi and make some real power

i feel 9 to 1 is great for up to 10psi. any somewhat decent bottom end could handle that. if problems arise, just run alky injection and an intercooler and make sure the fuel is right and it should have no problems

9.5:1 comp ratio right now with my iron heads. it's got forged rods and hyper pistons. with conservative timing and those aluminum heads, my motor would love 10lbs, and i think about boosting my 305 all the time

Well you are feeling wrong

10psi is an incredible amount on any small block. There are two boosted LS1 cars in our local club and one runs 10 psi and runs 8's!!!!! At 6psi he was running 9.45 at 146 with stock displacement! Most LT1 and LS1 procharger kits only come with 4lb pullies and an optional 4.5lb pulley. That is a lot of air it is moving. A 305 will not handle 10psi no matter how much it is built.

10lbs of boost need no more than 8.5:1. Your dynamic CR's would be out of this world if you were anywhere over 9:1.

come on shifty, what the heck are you talking about? 305's take 10lbs. of boost ALL DAY LONG!!!! look at Willies cars setup, old and new. there are others too on the power adder board making sick amounts of boost (12-14lbs) on BONE STOCK motors!

boost is totally contingent on flow. those ls1 heads can straight out get the job done. that's why they boost figures seem so low. higher boost means there is higher restriction. what a 10lb. pulley does on my motor, may only make 6lbs. on an ls1. they when you turn it up even more, that's when you make big power.

buddy of mine has a procharger on his 8 second bbc powered malibu wagon. it has on it an off the shelf 18lb pulley, but under WOT, he only saw about 9 of those pounds. that's cause he has 540ci and heads that flow like a motha.

EDIT: *never once did i imply that these motors would live with that much boost with pump gas 87 octane*

wow, well i dont know, i have seen many on 10psi and higher.

cobras run up to 16-20psi and do 10's and make 600 hp or higher.

a good small block chevy should be all over 8-10psi. thats about what i would run on a more built one or more of a street car and up to 15psi for racin or a real bad street combo. LOL

Jim Filipowski is running a blow thru carb 360ci sbc with a 101mm turbo in his 95 camaro. he just blew the doors off the NSCA Drag Radial record running a 7.91 @ 183. he is pushing over 25+lbs. through his motor. obviously this is an extreme case, but don't tell me sbc's don't like big boost.

i believe 8lbs to be a good streetable number.

arent most kits like vortec and procharger set at 7-9 psi for 5.0 stangs and TPI/LT1 Fbody's???

its definetly not 1000 for one head no madder if it is aluminum or not,i think u need to do ur hw a little better on those heads next time, i mean seriously WTF?

did you read the whole post? $969 for the PAIR for the older style intake. you can EASILY sink $800 into a pair of stock heads if you have someone else do the work.