WASyL

as i had oiling faliure and will need to replace heads and cam, i'm looking for set-up that will put me around 400-450 HP, any advices what to choose ?
bottom is 383, intake is HSR with Holley 2x58mm TB.

best regards

PeterFeix

iTrader: (1)

I'd recommend some AFR195s and a nice cam.

http://www.jonescams.com/hyd_rlr.htm
HR72330 286° 226° 140° .330" .495" .528" .561"

I have this one, should max out at about 6k rpms with my 389stroker with somewhere in the 450hp range. I will see what my upcoming dynotune will show. I have an appointment on monday, so I think by friday I'll have some results (or a broken transmission).

Orr89RocZ

iTrader: (20)

450 on motor or at the tires? 450 on motor is easy. Doesnt need much cam at all. 400+ at the tires is a bit harder to get but certainly doable in a 383 with good heads.

Whats your goals for RPM range and what internals do you have in that 383?

WASyL

i want to get 400-450 HP on wheels,
internals are http://www.summitracing.com/parts/ESP-B13405L03053/ so with this rods and crank i was told my RPM limit is around 6100. Car is used mostly on street.
i was thinking of these heads:
http://www.summitracing.com/parts/EDL-5087/
and this cam
http://www.summitracing.com/parts/CCA-08-443-8/

used with 1.5 ratio rockers and LS7 lifters, will i get such power? mayby different setup ? i would like to pay no more then 1200 bucks for heads and 300 for cam

best regards

scamaro355

If you have an older stealth ram you'll have to do some welding and porting for a 210cc intake runner. Im running a 200cc with my 355 and stealth ram and it just barely meets up correctly

WASyL

what do You mean by older? I bought new one at summit about 3 years ago: http://www.summitracing.com/parts/WND-7540/

best regards

Orr89RocZ

iTrader: (20)

https://www.thirdgen.org/forums/post...042-post5.html

HSR casting changed at one point few years back, 2007. Allows for more material around ports so you can open it up to a 1206 gasket that most 210cc+ heads have, but some 195-200cc heads exist in 1206 size.

Good news is you dont need 1206 gasket to work if you had heads in the 1205 range like most 195cc heads.

I dont know much about the edelbrock E-210's but they could get the job done with a big enough cam. The cam you list is a good size, I'd probably run 1.6 rockers on that. You will need to change the springs out on those heads, I dont think they are adequate for big hydraulic rollers

In fact, most heads now are not setup right for hydraulic rollers. You need atleast 140lbs on the seat for most cam setups spinning over 6000 rpm. I'd rather see 150-155lbs on the seat pressure, and 380-400 open. You will find these springs on the upgrade package for AFR, but even their out the box springs arent strong enough for aggressive cams. But the upgrade spring is only 100 bucks more so its well worth it. Profilers from Chad Speier will have good springs. Likely to use a manley spring or patriot extreme gold's, which are great springs.

The cam you list will spin to 6800 rpm which is ok on your bottom end if it has good balance job and strong rod bolts. I'd prefer to see 6" rods on those kits to keep piston weight down.

Should be close to 400whp with those heads but hard to say. I know better heads exist like Profiler, AFR, brodix race rites, dart pro 1's etc all in the 195-200cc range. But you need to pay 300-400 bucks more to get the goods. Somethign like AFR 195's or Brodix race rites 200's with appropriate springs, and that cam with 1.6 rockers should make 400+whp. You could even get 400whp with a smaller cam if the heads are good. 280XFI or similar can make those numbers with one of the good 195-200cc heads.

WASyL

and what do you think about this combo http://www.summitracing.com/parts/TFS-K315-465-450/ ??

best regards

86White_T/A305

I would take Orr's advice.He recommended for my 383 hsr the xfi280,afr195 combo.I went with the afr spring upgrade and 1.6 rockers.I highly suggest porting the hsr for better midrange and top end power where the cam really started to come in strong.Car made very good power and torque.Had good street manners..good vacuum for brakes,just enough lope,crisp throttle response.Use long tube headers aswell for more power out of it if you dont have them already.You will be happy

evilstuie

86White: What sort of power do you make with that setup?

Just looking for a head/cam combo for a 383 I'm building.
I wan't decent power but the car is a daily and usually lives in the 2000-3500rpm range, and don't want to rev to 5500-6000 to make power, as the bottom end will just be standard, no forged stuff etc. and want the motor to last.

86White_T/A305

Never had the car on the dyno with that setup,but it felt gorilla strong from a dead stop! wish I couldve found someone local to give it a true dyno tune to see how much I was leaving on the table.You dont have to rev the motor to the moon..being a stroker motor..you will have torque on demand at those rpm ranges.It was good on gas too..untill you put your foot down.I cant say how much the afr heads impressed me and I was glad to upgrade the springs,made for a quiet valvetrain with 1.6 rockers.The 280xfi cam actually seemed tame in a 383 vs it being in a 350.It didn camm too hard at idle..was smooth and steady..no surging..from about 2000+rpm..it plants you back nicely and pulled to 6400 before i felt the motor started to fall flat.Was a nice lil street motor if thats what you are after..its a combo on here that has been done time and time again for good reason.had me almost tempted to try the xfi290 cam on a 112 lsa or so just for fun.

Orr89RocZ

iTrader: (20)

280XFi is a pretty good shelf cam with good heads. Its about a 390-410whp cam with good 195-210cc type heads and a short runner intake. Thats about all its gonna do. 350's will put to 6500 strong and a 383 should be all done before then. Its abit much for a daily driver in a 350 but a 383 its pretty mild. The stroke and cubes eats up the cam duration. My buddy drove his 360" L98 with the 280xfi just fine but it cammed pretty good at idle.

A custom 274-276xfi would be best for a street 383 that doesnt wanna go over 6K with good heads on top. It would be 224/230. Comp has the lobes you just gotta ask for them. Other heads may want abit more duration split or a different LSA. If you wanna get abit more aggressive, put the 280xfi on a 108-110lsa and watch it pick up some power.

efiguy

iTrader: (2)

I offer custom grinds if you're interested, and I have a few ideas in mind.

evilstuie

Thanks for the offer, but unfortunately I'm in Australia, but I may still take you up on the offer depending what it'll cost me over here.

I've still got to do some research on roller gear and see what I need.
I've got a vortec roller cam block, but the vortec 906 heads on them look like its normal rockers, and the HSR is non-vortec so I need to find a set of non-vortec heads fully assembled with the right springs etc and preferably with roller gear, and have it all ready to just bolt on.
Just got a great deal on HSR setup for $1200, comes with all rails, painless harness, injectors, Granelli 80mm MAF, all sensors, ALDL cable, AutoPRom and other bits n pieces, ECU, fuel pump, AFPR, and whole bunch of other gear, so I'll be putting that together with the 383 vortec bottom end, and hopefully a set of 210cc aluminium heads and once I've got the heads look into the cam specs.

At the moment my 85' T/A is running a 290hp low compression GM crate motor with 305 TPI intake(still with 19lbs injectors) and it just sounds sadly tame.
I've got a full 2.5" dual exhaust which gave it a bit of tone, but still doesn't have the grunty noise the car is worthy of, so hopefully this heart transplant will give it some attention.

vetteoz

iTrader: (13)

Why?
as noted above you don't need 210's on a street 383 , esp if you don't want to rev it
Big port heads and your 2000-3500rpm range operating ,don't mix well

Chicken and egg
Need to know the cam specs before buying pistons and having block machined

Too big a cam ( because you want a lumpy idle ) will lower the DCR so big cam makes less Hp than a smaller one
Opposite works too ; too small a cam / too much DCR = detonation

evilstuie

Ok, so best way to do it would be get bottom end minus pistons, heads, then choose cam and pistons to suit?

Yeah I really want that lumpy idle, my idle at the moment is weak.
I also forgot the HSR will need the fuel lines adapted from the TPI. Do I need to cut anything, or its just making up joining lines?
I'd like to keep the option to have the TPI setup back in there if needed.

The block shouldn't need machining should it?
I opened it up yesterday and everything looked like new in there, piston walls are smooth as, no lip, no marks etc, and they're bored to 20thou.

Orr89RocZ

iTrader: (20)

Kinda gotta do all 3 at the same time. Decide on a compression ratio and head to make your power and cam to match, while paying attention to the intake you run and the operating range you desire

lumpy idle you want tighter LSA cam. Need overlap to have lumpy idle. xfi stuff is abit smooth, I mean it passes california smog HSR is good to 6500 in a 383, so if your bottom end is up for it, you should cam to peak in the 6000 rpm range. Thats about 230 deg duration depending on the lobe design and heads. It will have good power in the 2500-3500 rpm range. If your building lower rpm motor with a 383, perhaps a TPI would be better than HSR for that power range and go with a 190-200 cc head and no larger. really dont need anything special for that sub 5500 rpm range.

vetteoz

iTrader: (13)

If you cut the lines you won't be putting TPI back in easy.
Most remove the TPI stock lines intact back to the junctions on the frame and run new lines from there to rear of HSR

We are talking about decking the block to change the compression ratio; not boring it out
If you are going to use the pistons you already have then you need to do the CR calcs as Orr89RocZ states to work out chamber size and cam needed

efiguy

iTrader: (2)

You need some overlap but it can be helped with a larger exhaust lobe too.
I'm shipping a short block there and have already shipped a cam as well, no real issues.