88camaroRS

i have two camaro's one is mine and the other is for my girlfriend to race and the motor is a 307 what can i do with this motor and make it a little faster for her? and there is a budget so be cheap guys. what size of cam and so fourth? i have a 406 in mine and i think its a little big for her so i'am just going to bluid her own.

Tas

everything you can do to a 305 you can do for a 307. Just see how some of the better 305s are doing. headers cam...

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-Tas
'89 Formula WS-6 made in Van Nuys, CA, U.S.A.

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

SoCo80p

iTrader: (5)

yeah you can do the bolt on stuff like cam, headers, intake, etc,.. it will make it from slower then hell you could beat it on your bike slow, to pretty damn slow, 307 cars usally had a powerglide trans an 2.56 gears, also what year is it?

five7kid

iTrader: (14)

The 307 heads were terrible. That'll be your biggest expense but also the key to unlocking performance.

Yeah, what year?

Do what I did, with year differences taken into account as appropriate (like exhaust), she'll smile for you...

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4, 2300 stall TC. Ported World 305 heads, Crane PowerMax 2050 cam. ZZ3/4 intake, oil pump, pan & baffle. Accel HEI SuperCoil & module. Hooker 2055 headers, 3" Catco cat & 3" catback w/dual-opposite Flowmaster 80. 2.93 limited slip. Spohn SFCs waiting to be installed. AMSOIL syn lubes bumper-to-bumper. Daily year-round driver. Best ET, speed TBD...
57 Bel Air, my 1st car. '66 396, 9.7:1 forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 700 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

MTCAMARO

iTrader: (1)

The 307 i had was pretty respectable after bolting up a set of 350 heads,mild cam,etc.It was also bored out to 4 inches which made it a 327 because the 307 and 327 share the same stroke.I spun a rod bearing in it last summer and rebuilt a 350 using many of the same parts,which gave me alittle insite on comparing the two.The 350 might have alittle more power,but not by much.I'm gonna get a set of new bearings and rebuild the old girl and keep it for a spare.Long story short,a 307 will respond to parts like any other smallblock.(Above post was right about the heads,very small valves.)

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86'Camaro Berlinetta SC,former 2.8,now 350 cid,4 bolt main.94'TPI 350 heads(pocket ported),420-442 lift summit cam,cloyes double roller timing set,Modified q-jet carb(e hanger,ch rods)700-r trans(rebuilt)3:42 gears,t-tops,b&m megashifter,grant wheel,fresh headliner,Macewen white face gauges,American racing wheels..Dedicated to those who enjoy scrounging through junkyards more than throwing money for new stuff...

Tas

a 307 uses 283 block and 327 crank right? what would it be if you used a 350 crank?


[This message has been edited by Tas (edited December 11, 2001).]

88camaroRS

what if i was to put my 400 heads on the 307? and would i be able to run the 400 stock cam in the 307? if so would it be worth it or not? and how high of lift of cam should i put in it. i have a performer RPM intake and holley 600 carb for it ready to go on and i will have the block numbers tomarrow. and what all would i have to do make a 327? thanks guys and keep the ideas coming and what all can i do with this?

five7kid

iTrader: (14)

400 heads and 400 cams are good for boat anchors. Either, or especially both on a 307 would slow you down.

To make a 327 out of it, you could put a 350 (or 305) two-piece rear main seal crank in it (actually makes a 328). Of course the custom pistons you are going to have to have made are going to run you more than you want to imagine. Some fools have bored 307 blocks out to 4" - results in very, very thin cylinder walls.

You can do a lot with a 307 with heads, cam, induction and exhaust. Just don't expect it to outrun similarly modified 350s. It should run as well as or better than a 305, though, especially in the upper RPMs.

MTCAMARO

iTrader: (1)

Just for the record,I was just giving my opinion based on personal experience.When i bought my car ,it had a 307 in it and i didn't have a clue what someone had done to it.I was told it was rebuilt and thats it .Nobody was more surprised than me when i popped the heads and found a 4 inch bore.I'm well aware of the thin cylinder walls,but sometimes you got to take the cards your dealt.That motor took all the mods i threw at it and never had problems untill it spun a bearing.We all know spun bearings happen to the best of us.I don't concider myself a fool because i didn't have the money to go out and buy a new zz4 or something.Sorry for getting off topic,i'm done now.

steve8586iroc

If you want a 327 use a 350 block and your 307 crank. The 328 sounds pretty neat too, but Tas is right the pistons would have to be made for the engine. The 350 block is the best choice and cheapest.

five7kid

iTrader: (14)

Not to those of us using synthetic oil (AMSOIL, in particular).


(MT, didn't mean to call you personally a fool. Obviously, you didn't do the work, but it is still not a wise choice up front. Many early 283's had thicker cylinder walls and were punched out to 4", even before the 327 existed.)