LSGunZ28

iTrader: (8)

What do you guys think my Forged 402 will make... In a 2002 Camaro Z28....

402 with eagle crank, forged pistons and rods, Compression ratio should be 11:1 or 11.1:1 ish.... 862 casting heads(PRC 5.3 stage 2.5 heads from TSP)... 238/244 cam .613lifts on 113+2 LSA... LS7 lifters, harland sharp rebuilt stock rockers, hardened pushrods, (FAST 92 with 95mm tb going on tomorrow) FAST 36# injectors, maybe a 85mm MAF will go on even though Ill probably go with a SD tune, but its a bigger inlet than my stock MAF which isnt working now... SLP Lid, K&N filter. Pacesetter 1 3/4" headers, ORY, Magnaflow catback, T-56, LS7 clutch with Aluminum FW, PSt aluminum D/S, Moser 12 bolt 3.73s..., 25%udp.... stock waterpump and accessories... I think that is all...

Im really hoping to make over 480RWHP on a mustang Dyno... My original goal was 500+rwhp, but I dont think I will with that valvetrain and those heads on a 402...

On wednsday Ill post up results, but until then I wanna see what you all will think Im gonna make...

BayAreaSS

iTrader: (10)

On a mustang dyno i'm going to say 470ish.

LSGunZ28

iTrader: (8)

If I make 470 rwhp flat for example... would a set of roller tip rockers(like YT ultralites) and a EWP help free up a solid 10rwhp??

if so, id consider that in the near future...

edit: Also I know that my 12 bolt is eating up more HP as well as my headers too are probably a restriction...

any ideas to free up more HP?? (No I dont want a bigger cam and I will probably consider different heads in the not so near future).... I would consider raising my CR also if I ever take my heads off.. im pretty certain its fine for DCR and SCR... and PTV clearance

bad95killer

I'd say 465rwhp on MD just to be more conservative buddy on my guesstimate ...keep us posted

peace

Jditlfm

iTrader: (26)

A light weight clutch is something to consider if your trying to free up some hp.

allngn_c5

iTrader: (3)

I am going to keep an eye on your results bro. I too have a 402 being built. You got the same intake/tb as well. Is it ported and did you get it from Ron at Vengeance ?? Best of luck bro on numbers. I bet she makes right around 500 rwhp on a DJ, not sure how much a MD is going to show. Either way, you got a nice strong setup there and you should be happy once everything is done. Again best of luck !!!

One other thing, what size runner on those heads? I am re using my 59cc AFR 205's and also my g6x3 cam that were on my 346 that made 490 rwhp 445 rwtq. The 402 should have a lot better manners (similar to stock until I hit the gas) then my 346 did. Although with Louis's tuning expertise she was as good as she was going to be. LOL. Sorry if this was a bit of a hijack, I am just very excited for you and your upcoming results. Can't wait to get my stuff home before the snow !!!!!!!!!!!!

WKMCD

iTrader: (2)

I think 470 on an honest MD is a little optimistic. I would expect around that number on a DJ.

Just my $.02

AU N EGL

Wish you the best of luck. But 480 rwhp on a Mustang Dyno?


Now what ever you do get with the Mustang dyno will be honest numbers.

WKMCD

iTrader: (2)

Not necesarily. MD's are much more vunerable to "human intervention" than DJ's are. On either dyno, it really comes down to the integrity of the operator.

john563

iTrader: (17)

I'm very interested in the results..I have the same heads,and plan on using them on a 402,408 ci...Good luck to you and cant wait to see the results

LSGunZ28

iTrader: (8)

I dont think 480whp is that optimistic, because I know my heads arent with the biggest ports around, but I think with my aluminum FW, 25%udp and aluminum DS are things to free up some hp, because a lot of people with mild cam 402s are making 500rwhp and they dont even have lightweight drivetrains...

So even if its optimistic, what do ya'll recommend to free up some power? would me changing my rockers free up power? I have a set of YT ultralites laying around, thats why Im asking...

Also My FAST 92 isnt ported , but im gonna free up some rough edges on it for smoother flow....

smok'nZ

iTrader: (160)

500+ dynojet mustang? probally 480

LSGunZ28

iTrader: (8)

So what are ya'll telling me? Are my heads and cam so small that Its impossible to break 500rwhp with my setup?? sounds like even with a ported FAST 92, 1 7/8 headers, ewp, etc... id never touch 500whp on my combo, on a mustang...

well im still waiting for what I can do to free up some hp?

-rockers?
-I already have an aluminum fw, but i know the ls7 clutch is weak( how light is a mcleod twin disc?)
-ewp worth it?

what else??

The Dragon

iTrader: (6)

Your headers are a major choke. Why put on a FAST and 95 mm TB when you choke the exhaust? Get some 1 7/8 stepped to 2"

EWP is pricey but money is relative. I say get it.

Your compression is kinda low for big cube forged internals; bump it up a few tenths with different heads IMO.

In any event, just changing your headers will give you a nice gain with the rest of your set-up staying the same. I'd say you'll pick up a solid 15 rwhp through the rpm

lilbuddy1587

iTrader: (1)

You don't need 1 7/8's or a bigger cam. What they're telling you is that your heads are going to be the limiting factor. Everything else looks great man Your Harland Sharp rebuilt stockers are more than sufficient but as far as the EWP goes, I wouldn't unless you had the coin. The LS7 is definitely a heavy clutch BUT the aluminum FW will help and not only that but its a great mannered clutch.

No reason to try and stick a "donkey dick" cam in there with HUGE headers etc. etc. and have nothing more than a peaky car.

11:1 Compression is GREAT for a street motor. Anything more and you're taking a chance of not being able to run however much timing the motor wants and having to fight detonation.

LSGunZ28

iTrader: (8)

I think for my compression ratio my timing is too advanced with my old tune, because Im detonating...

I dont think 1 7/8 headers will get me 15rwhp, maybe 5-7ish... and later on that may be worth it, and I am thinking of the TSP headers maybe in a few months...

My cam was speced out by patrick G for these heads specifically, but I thinktheyll work okay with other heads as well...

and also "dragon" my compression isnt that low, i would like to go 11.3ish :1 but I dunno if its fine with the cam I have..

99 Black Bird T/A

iTrader: (4)

Mustang Dyno 455rwhp and on DynoJet 475rwhp are my guesses.

rpmauto

iTrader: (14)

probably around 470 on a dj. I had similar goals and got shot down with my setup.

smok'nZ

iTrader: (160)

i bet if you got 1 7/8's ewp and ditched the lid for a bigger one you would be 500 on a mustang or 49x at least

LSGunZ28

iTrader: (8)

lol I think id cry...

How similar is a dyno dynamics to a mustang??

I made 432 on a dyno dynamics when I was stock 346 LS1 with the same 5.3 heads and a Tv3 cam, but I only had 10.75CR... and LS6 manifold....

based on that, I think my new cam and heads and FASt 92 will make 490s on THAT dyno maybe...