hello, i was just doing some brain storming...
i currently am running the perf. rpm manifold and using the lt1 cam with stock heads...
i am ordering a set of 081 castings with the 1.94 intake valves and a mild port and polish job and they have a .510 lift capability...
i thought about putting in 1.6 rr's and maybe putting on the 925-7547 or 7546 xcelorater manifold it has a range of 2-6500 rpm's
i have a 5 speed and dual friction clutch.
i know i would need more tuning done and also bigger injectors right now i have the holley 2" unit with the 57pph injectors
i am not using egr or a smog pump...
i may also buy the hot cam instead of rr's
any thoughts?

The Performer RPM is one of the better choices of manifold to use on that motor, I would stick with it. If you really consider putting a hot cam in that 305 be prepared to TUNE like mad. That thing would be a bear to tune in correctly, especially for a novice tuner. But, not only would it be hard to tune in, I don't think it'd match your engine very well. I think it's way too much cam for a "stock" headed 305, thing would probably want to spin up to high heaven.

ohh... scratch the intake change i forgot i have the 1" spacer that is open...it is the one that mates a quadrajet to a square bore manifold... but ihave it put on backwards so the bigger side is towards the front directly under the 2" bores and it flows almost perfectly smooth into the intake with maybe a mm sticking out in certain parts toward the front of the bore. but it is definatly smoother than just going from the 2 inch into the dual plane with just the turbo city or holley adaptor.
well i want to build it for use to about 6,000 rpm's so i may need to go with a diffrent cam. i read the sticky post above and found it very interesting about using a cam with huge amounts of lift.
i don't want to go with a 350 because everyone says to... i am weird like that and i like to be diffrent. i do like the 327 though...
i also think the 305 stroker kit will be a waste of money. i spoke to power house in great depth about this and he said typically you will see a 65 hp increase by doing the kit, plus their kit is for up to a 1984. you have to pay about 40.00 bucks more for the newer gaskets then on top of that if you have a 5 speed you need to have the thing balance at a local machine shop....
yes 327.... hmmmmnnnn........
well i don't know. i will just finish building up the 3slo5 for now until i find a 327 block... or can you use a stock 350 roller block and get the smaller crank somewhere. i"ll do a search and see what i can come up with on the 327 unless someone wants to pm me.
also whats the deal with the lt1 cam info...???
i have read several diffent specs for the cams on different sites. does it really have a 116lsa? i was reading 114 - 116 was great for supercharging but not as good for power without one. i see alot of cams in the 108-112 that should work ok.
so 305 or 327 with 2" bores 454 injectors ,performer rpm manifold with 1" open spacer, lt1 cam, 1.6rr and a crank designed for higher rpm's i think 13's are doable... pablo did pretty dang good for a 310 ci block running 13's with a carb and i beleive he had lo3 heads??? and when he switched back to 2" tbi unit he said it ran out of steam up top. i wonder if he would have used the 1" open spacer if it would have helped. of course he may have been running a diffrent manifold than the rpm??? i can't remember.
i was looking at something interesting in the technical information on this site... if you go to the 92 camaro's and look at the tpi's the 305 that had the l98 cam was only about 15 hp shy and 40 ftlbs. trq diffrent. so i guess the bigger bore is only helping by adding 15 hp and 40 ftlbs. that is not a huge diffrence
Z28
Formula
Trans Am
GTA M5 LB9 V8 9.3:1 5.0 (305) 230@4200 300@3200 TPI ---- 3.42 ---- ----
92 Z28
Formula
Trans Am
GTA A4 L98 V8 9.3:1 5.7 (350) 245@4400 345@3200 TPI ---- ---- ---- 3.23
i would be interested to see if a tbi on that 305 with a better manifold would have made the same power as the tpi did...
also i am planning on going with true duals mandrel bent exiting right in fron of the rear wheels. that should help out the exhaust flow alot!
well like i said b4 i have had the car since oct 02 and i have been around this board since then so i have heard it's cheaper to go 350 but my personality type believes in doing whatever i want and i don't just bow down to what everyone else does. so i don't have a 350... who gives a @!$% :lala: i am not ever going to have the fastest camaro or the very best looking even though with the paint job it comes pretty dang close until you look at the crappy interior.
but i want a car that i modify and improve over stock and can get some self gratification by making my car better and going against the flow, don't get me wrong if you want a 350 then you get a 350. or 383 or 454... i beleive in whatever makes you happy... sorry i'll get off my soap box...
i would like to hear some input on the plans though

great input brony...
but i said i was not going to use the stock heads. i am ordering a set of 305 tpi heads that are set up for high performance. they are stage 1 ported and contain 1.94 intake valves not the 1.84 stock size. and yes i would need to use some expertise on tuning it. but thats where my lt1 cam comes in... i am getting the heads next month. free shipping and they are 479.00 buckeroonies.

they are machined for guideplates and screw in studs, also they come set up for .510" max lift. if i use the hot cam i will have to improve the lift capabilities but that is what i want, a high reving 305. i will probobly rebuild the motor this summer and order a stronger crank, i should be able to use a performance one from a 350. i'll have to look into this as well.
so i think i will go with the hot cam maybe in a year after i get bored with tuning the lt1 cam... i am still going to be limited right now with the 57 pph injectors right now. i will have to tune it with them and see how it does and get a little practice in b4 i go to the higher flowing injectors. thanks for the great input i am excited...

i am looking in the summit catalog and they have an lt1 performance cam number...cca-07-306-8 with 230* int 244* exh and a .510/.540" lift for 239.95 it shos the hot cam specs at 218/228, .525/.525, i wonder which would be better for the tbi? i remember reading a post a while back about tb's and dual patterned cams like the ht cam???
new price... hot cam 205.95/ 306-8 is 239.95. any thoughts? also i plan on replacing the t5 with the t56 in the next year so i will go with more aggrssive gearing then. i have the 3.23 posi right now. i may go 373 and with the t56 i should do ok on the higher gear ratio and cruising speed.

The cams changed over the years. The f-bodies and Vettes alone had 5 different grinds over the span the LT1 was in production. The 94 and 95 cams were the biggest but all of them are almost identical. The B-body cams also varried and had 110 LSA's on some of them.

I would look for a used Hot Cam. There are tons of LT1 guys that go with that cam that wish they had gone bigger. You could save a bundle there. 1.6 RR may put you over the limit though on your heads.

I have a LT1 corvette cam in my 355 with 305 tpi heads in my van. It pulls real well to 5,800 rpm which is as high as I want to turn the near stock bottom end.

shifty i am confused... are you saying to go with the hotcam instead of the lt1 with 1.6's. because i can get the rockerarms for 79.00 and the heads already accept a .510" lift. i have a cam out of a 95 firechicken i bought it 2 years ago, i know there are diffrent cams for diffrent models and years, i was refering to the 94-95 camaro and firebird cam. i have seen this one on a couple of sites and they were a little diffrent. one said it had an lsa of 114 and another 116? i am pretty sure its the 116.
i also believe the lt1 pulls to 6500 and i know my manifold pulls to 6500 so 1. will the lt1 cam with 1.6's pull higher or does that just move the powerband up a little? i want to build the bottom to pull to at least 6500 when i am done with it.
i have nothing against 350's i just want something diffrent and like i said it doesn't have to be the fastest car around. i don't have gobs of money but i have some to play with. plus i have another car to drive which is a plus! am i correct in thinking the 327 will wind higher than the 305 becasue of the stroke diffrence?
thanks for the great input i am still brainstorming( or frying???)
what if i put longer rods in the 305...???
i like to try weird things... just to see how they work!

those are some good times for a van...

hmmm anuther desizion... should i buy the 474.99 heads all ready to roll... or i can buy some used ones for 4ty bucks from a guy 200 miles down the road? his would need to be cut for the 1.94 intakes and ported of course. then i would have to add all the parts, valves, stems retainer seals... new springs...

I'd run the heads you currently have and then save up for something 'alot better. Heads/cam is where the power is. In the 8-900 range you can get Trick flows or Edelbrocks. 12-1400 AFR's. I'd say a set of AFR195 with the Edelbrock RPM and Hotcam should net you some nice gains. Although, from what I have read (not experienced yet) your probably going to be pushing the limits of TBI when you get to that good of a head/cam combo.

EDIT: Just realized you have a 305. AFR195's a tad to big for those, LOL. Vortec might be a nice addition for around $400.00 and work wonders on a 305. Just need a different intake...

The times are actually a little slow for the MPH due to wheelspin off the line and through first gear. I have bigger tires on it now but have yet to run it at the track with them. Need to get away from the 3.08 rear end too. I think a 3.90 would be right. I am getting off topic though.

I suggested the hot cam after reading that you had your heads worked to accept .510". With that cam and 1.5rr's you would be around .500 lift. The LT1 cam and 1.6 are a good choice for unctouched heads with the .470" or so lift limit. Plus, the hotcam is much bigger than the LT1 cam in all aspects. It is also one of the cheap "big" cams out there. You could get a used one and avoid the really high cost of new aftermket FI cams. Didn't mean to confuse.

thats cool... also i could run vortecs but it has already been done... and i don't want to spend 1000 on heads...