I plan on building a nice 383 (want at least 400 hp). I have the block, which is the only reason I'm not doing a sb 400. Anyways its a 69 block, forged 383 crank, forged flat top pistons (probably speed pro), was thinking about these heads http://www.summitracing.com/parts/TFS-30400002-M64/. 1.5 roller rockers. And now I ask for guidence, are those good heads? Any ideas on a cam was thinking something like 489/504? What kind of intake for this build, would the stand by of a edlebrock airgap work well? And lastly any guesses on the hp that would dish out?

 

those heads would work pretty good but the bigger cubes of 383 would probably like the 215cc heads better. Is your block a roller cam block? If not, I would be looking for a roller block so you can go with a roller cam. and yes, the rpm air gap will work just fine. I'd also go with a set of 1.6 rockers. What compression are you looking at? daily driver or track only? For the money, I'd also be looking seriously at using the vortec heads. check out this article: http://www.chevyhiperformance.com/te...est/index.html

gm 383 crate engine comes with iron vortec heads and 9.1 compression, rated at 340hp/435tq with a lazy cam. change to a comp xe282 cam, 750 carb, 1 5/8 headers, 1.6 rr, comp 977 springs and it'll net you 459hp/501tq. You'll have to do a little machining on the heads to accept the bigger springs,slot the pushrod holes a little, and but it's not that big of a deal. Or you can buy em already set up from SDPP. The trick flows only made about 40 more hp than the vortecs.

 

It wouldn't be a DD, but not necessarily track only. Its an L-48 block. Any yes I am going to use that block, it was given to me to build. Part of the deal. So these heads would run better? http://www.summitracing.com/parts/TFS-32400006/
So Hyd, flat tappet cam. I am hoping for somewhere above 10:1 compression Ideally 10 3/4:1 to 11:1 compression.

 

bumpity?

 

remember the FRAM ad, little now or alot later? spend that extra little bit on a roller cam and you wont have to worry about rolling a lobe.

 

Look I am using the block. My grand father gave it to me specially to build. Can you retro fit rollers? Idk much about cams.

 

yup, roller lifters are avail for pre 87 blocks. i would say you would go with a 853-16 (comp pn) but being your going with a 383 you may neeed something else but i pretty sure thats the part. call the tech line and they will be glad to assist.

if ya want to get even more trick, ask about the kit to retrofit a 1 pc crank into a 2 pc block like you have.

 

Well then I'm goin roller then. lol. I still lack knowledge of a lot of things, Kinda learnin as I go. Which is why i keep asking so many damned questions. btw i get no results with that number, also love your name on here.

 

nvr mind it just came up lol. Now what about actual cam size? is it any diff with rollers?

 

thats where the tech guys come in. they will ask you what your objective is with the car and get you in the right direction.

 

aww who like tech guys... lol Im the kinda person that has to learn bout everything by research
I might run it by tech guys tho

 

Dependent upon application
My 383 with ported 195 TFS heads ( out to 205) spins to 7K and makes 415 RWHP.

Better to get the lift required on the new cam instead of fitting 1.6's.
Can always fit them later if you "need" more lift.

 

Looks like they are intended for 400 blocks.
Note at bottom states
Must use head gaskets with 4.155 in. bore diameter.
4.155" gasket on 4.00" bore block is not desirable

http://www.nastyz28.com/forum/showpo...4&postcount=17

http://www.nastyz28.com/forum/showthread.php?t=219380

 

You'll spend a good bit of extra money retrofitting a cam like that. Its cheaper to get a roller block, and that's assuming you dont sell the old block to pay for it.

But if it's one of those sentimental things then it can be worked around. Just wanted you to be aware.

 

check out the engine parts for sale on here. you can probably get a good deal on a set of AFR's.

 

I wouldn't use Trickflow heads. They look decent on paper but I've honestly never seen a fast car with them... For that kind of money AFR all the way. If you can find Canfield heads (they went out of business last year) buy them they are by far the best bang for the buck in my opinion. As for the "go roller" crowd in here, I say if it's not in your budget don't sweat it. Go flat tappet and you'll be fine. I recommend calling Cam Motion and buying whatever they spec you..

I know I'm going against the crowd here but my little 350 makes around 450HP at the rear wheels and it's got heads that cost $900 brand new and a solid flat tappet cam...

 

Why is it not desirable? I run a Fel-Pro 1010 which is 4.166" gasket on my 4.040" bore block. I've been doing this for years on many different engines as well... In fact its the gasket the cylinder head company recommended I use.