chevy 350 estimated hores power
 

oh i am building a 350 with 9.5:1 compression 1.94 1.5 heads edelbrok torquer intake holley 750 and a summit racing cam 292/292 488/88 im hoping to end up with around 350 at the fw what do you guys think??
what about 2.02 1.6 head are they good for strret use or should i stick with the 1.94 any other things i can do to squeez a few more h.p out of it??
thanks logan

go with 2.02 motor will breath better

i know but i was talking to a guy that builds the engines for cars at our local short track and he thinks i would be ok with 1.94 for street use he thinks 2.02 are for more strip car rather than street

The 1.94's are better for the street. You won't see any gain unless you'll be above 6500rpm most of the time. I'll bet that cam and your springs are done by then anyhow.

my issue with 1.94 heads is they dont breath well and 2.02 heads were stock on lost of 350 motors destined for street from factory but maybe just me

290HP

The only ones I can think of are the LT-1's that came in Z-28's and Corvettes in the early '70's that had solid lifter cams and some compression.

462624.....75-86...350/400......76cc chamber, 1.72/1.5, 1.94/1.5 or 2.02/1.6 valves
330545.....73......350..........76cc chamber, 2.02/1.60
333881.....74-75...350..........76cc chamber, 2.02/1.60

Sam, refresh my memory. What vehicles had these engines with these heads. I am getting old and forgetful. But those years all seem to be smog engines that were lucky to make much over 200hp.

two good sites for looking up head numbers

http://www.fastnuf.com/Headguide.html

http://www.thedirtforum.com/castings.htm

Is this a street or strip engine? Do you already have heads or looking to buy?

im looking to buys head but for like 250 bucks max and something with a low cc combustion chamber so i can get my compression up to like 10:1 it is more of a street motor but i wanna have enough get up go so when i pull up next to these rice burners im gone before they get a chance to step on the gas im looking for lie 350-375 hp with 9.5:1 and the cam listed

all 400 sbc that i know of had 2.02 camaros caprices vettes trucks some motnes 70s and ho 80s motors had them heads are plentiful and breath fairly well other option is a vortec head off newer 350s not LT motors though

in street form the 10:1 in my humble opinion is both pushing it for pump gas and an iron head getting in the area of needing an aluminum head but thats my opinion and im sure others will way in on it

yeah i was thinking 10:1 is about all ill get on pump gas but the iorn head is fine my dad ran a big block with 13:1 compression with rectangular port h.o big block heads so i think the heads are ok

bog blocks whole different ball game i dont think 10:1 on pump gas and iron heads a good idea was just talking about this with 3 engine builders last week all said at that cr an aliminum head is needed and the start at about 500 assembled but thats my opinion and what i was told

The 1.94 Head's are alot better for the street. Run the 1.94 and you will be ok on the street :!:






Mark

but thats a slowpar needs all the help it can get lol

Ok show me you can put chevy 1.94 heads on a mopar block :!: :!:



Mark

im talking small valves id just put the whole chevy in there so it would go fast lol

X2...

Who are these engine builders you speak of dragon? Anyone we would know? Just curious.

:shock: :shock: really !

Sam who have you been talking to :?: I have lived here for almost 50 years now :!: Racing for almost 30 years now and i know 99.9 % of engine builder's here :!: I race with some high horsepower big block's with iron head's :!:


Mark

Re: chevy 350 estimated hores power
 

I would ditch the torker manifold, it wont work very well on the street. go with a preformer. 750 carb and that manifold will be a bogger on the street. take the carb down to a 650 cfm also

mark sbc is what im talking about and greg (used run a dragster in kingsport) thomas not sure of last name and my uncle who has been building motors since i was a little kid

Sam i met your uncle and i wasn't impressed :!: :!: I know alot of high HP engines even small blocks with iron or steel head's :!: You can pull big HP from a engine without aluminum head's :!:





Mark

we will have to agree to disagree on my uncle mark cause ive seen some of the stuuf he has built for himself and others

Well i want to see it :!: He might be your uncle, But you don't come to someones house that you don't know and down their car either. The engine in my old Charger is a 500 CID stroker dynoed at 632 at J&J Racing in Kingsport and it has iron heads on it.

i was embassed cause he is that way and as i posted in here these were my opinions and what i had heard im not a pro engine builder and will not claim to be i know i have lots to learn and lots of knowledge here and you know me more then just on here. you know i may be partial to chevy but i dont put down anyones race car on a personal level for many reasons
1. a race car a race car
2. everybody has blood sweat tears and lots of hard earned cash in them
3. every one is proud of there ride and even though i may not like or not my flavor its their pride and joy

Those are some pretty good numbers Mark. My old 477 BBC at 13:1CR with iron Merlin heads on it in my Nova ran 9.70's-9.80's in the heat at 2870 lbs. That figures close to 700 hp.

Thank's Mike the heads have been worked over alot, 2.19 intake 1.91 exhaust,Cast iron heads part#915, 660 comp roller, Callies crank, Bill Miller rods,ross pistons, dome type, 14.1 compression, Old charger ran 10.30's. Turning it into a street car this spring. It is in my albums my brother ran it for awhile.