camaro-chris-ss

Ive been interesting in building a motor for a 3rd gen. Ive got a 350 4 bolt main. I want to make some decent power with this motor though. Do you think its possible making about 375 or 400 hp to the wheels for a reasonable cost. I have a cam with a 510 lift with 1.5 rockers. I dont know if that will cut it and i need some really good heads. Any recomendations on heads(besides the fact that there 2.02's) It will be an automatic. I basically have everything besides rods and pistons. Recomandation on them ? I would like 10.5:1 compression. Or Should i go the 383 way ?

DarthIROC

Definetely go 383, as for making cheap power, you cant beat extra displacement. The cams about on par, and as for making head recomendations say what your willing to spend on them.

camaro-chris-ss

Id have about $1000 for heads maybe more. How much do AFR heads go for used and new ? Its really worth the money to go 383 ? I wouldnt need a forged crank because i have no plans for a blower or nos. Ill find out the duration of the cam i got to find the cam card.

fb305svs

just pick up a good 1053 steelk stroker crank.

go 383 is yoru looking for more than 340 to the wheels...

i would consider some sort of head. in the end i wish i went with an afr head, but the trickflow ones i got don't do too bad of a job.

With my setup i run about 350rwhp, its been measured 430 at the crank, so go 383 if you want to come close to yoru goal.

get a cam thats a bit bigger, keep the duration in the 236 area. i would, depending on the heads, try to keep the cam around 550 lift. just make sure the head can provide the flow.

400rwhp on motor is pretty tough, but with a 383 could be done. going to take a good combo of parts however to do it.

OrangeIROC

383 Hands Down.. These days ur stupid to not to with big cubic inch.. I was in the same boat and when it comes down to buying a rotating assembly for your motor your gonna pay they same amount to a 355 and a 383 assembly.. Depending on brand name u might pay like 50 to 100 more for the 383 assembly but its well worth the 50 extra ft.lbs. of torque, especially needed to get our heavy cars rollin' good luck..

Mike

camaro-chris-ss

whats a good 383 rotating assembly that dont go for too much ? How much more money or afr heads then trickflow heads? Do they make an ideal cam to match either one of those heads ?

OrangeIROC

Ya like said above i'd first decide on ur overall goals or possible outcomes.. Naturally Aspirated, Nitrous, Supercharger, Turbo?? If your just going to start building up an all motor deal then you dont need expensive stuff, Eagle crank and rods are cheap, Scat cranks are cheaper, buy some SRP pistons, their cheap as well. Cheap but are very common and not considered junk. If i were in your shoes i wouldn't buy a whole rotating assebmly as a kit, i'd buy stuff separate and piece it together, it'll be cheaper that way. If ur thinking about Nitrous u could get away with doing the "cheap route" on your bottom end and toss in a 100 shot and i'd be fine. For the cam i'd highly recomend getting your short block and heads ready and in order then call up Crane or Comp cams, give they're tech guy your setup and then he'll tell your the best cam to use, DONT just go and copy what everyone else is using becuase you will probly end up making less power, match everything for your own setup..

AFR heads are pretty expensive but have the reputation which stands behind them. I have the AFR 210cc heads, 100% cnc ported, with 64cc combustions chambers, very very good quality and i'm VERY pleased with them highly recommended if you hvae the cash . Trick flow are decent heads i dont know alot of Chevy guyz that use them, however they were alot of mustangs in the area that stand behind them till the end. I'd say Dart Pro 1 heads are about equal with Trickflows and also in the same price range, only with more meat on them for porting. Another head that isn't given the credit it deserves is the Edelbrock Performer aluminum heads, they're also in the same price range as the Darts and Trickflows but flow excellent, personally if i had my choice out of the three i'd probly go with the Edelbrocks, but thats just my opinion, some might disagree.

Drkhrse89

I personally went with the route that OrangeIROC is talking about. I got a Scat 9000 3.75 crank since it was only about $140 shipped to my door. I talked with a bunch of racers that were dipping into the 10's that said it's a pretty good crank for the price. I also went with the speed-pro coasted skirt 383 pistons which were $180 shipped to my door. The rods on the other hand were a deal and a half. I got the LT1 PM rods for $10 and they are perfect. I have the melling HV pump that I found for $30. I personally do not have the money for really expensive heads so I am going to be running ported L98 heads until I get married and have some extra money to buy good ones.

It is not going to make the most power in the world, but I am thinking that if I take my time to build it and match everything up just right, I am hoping that I will get to 275-300 rwhp. If you do the shopping you can find great deals. I know on EBay there is a place out of Iowa, I thinks it racersoutlet that I bought the crank, pistons, and rings from and they were great to deal with.

I am thinking with all the odds and ends I will have about $2K into the motor to make it turnkey and I am pretty happy with that.

OrangeIROC

Drkhrse89, Ur setup sounds hella fun, and thats all that matters, not how much ur car puts down, as long as ur having fun with ur ride.

I have many freinds that have stock cast bottom ends running low 11's high 10s all motor and there having a blast. I am running a set of GM Bowtie heads in my 67 Camaro, nothing extravigant but i'm going mid 10s with it, so there is nothing wrong with production heads, u dont need top dollar stuff to go fast..

Mike

seannz28

you see my parts list below? Well, with my set up I plan to run about 420 at the wheels, and thats before all the suspension work I plan on doing, but:
383 short block with forged pistons .................$2100
Edelbrock rpm performer heads...........................$999
new fuel pump.............................................. ..........$89
Edelbrock air gap intake.......................................$250
EDL. 750 CFM manual choke carb.........................$245
BlackJack dynomax headers.................................$130
hyd. lifters, hardened rods and rockers(1.5)........$300
TOTAL.....I've spent some where around $4300 so far, (NOT ALL PARTS ARE LISTED)

it's not cheap to build HP...but it is rewarding.

aklim

Get a set of used AFR heads with nothing on them. That way you can put the hardware you want like valves, springs, etc.

I'd go for the 383 with steel crank if you have no plans for a blower or NAAAASSSS.

camaro-chris-ss

I do not have money for AFR. I think im gonna go with these :
383 will be going in an 83 hardtop z28.
New Dart 230cc Pro 1 Aluminum Chevy Small Block Heads. They come with a 230cc runner with 2.08 X 1.600 severe duty valves. They have 7 degree machined keepers with harden retainers and studs and guide plate (3/8 studs) They have 1.440 Dia springs good to 600 lift and have 135lbs on the seat which makes these heads good for a Hyd Roller or a Flat tappet cam. They have 64cc chambers with angle plugs and can be flat milled down to 58cc.
1075$
Good deal or no ?
And what compression would be good ? 10.5:1 ?
seannz28: whyd u go forged ? are u gonna run nos or a blower ?