![]() |
![]() |
#1 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
2.02 heads on my 307?
can it be done?
|
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Sep 2008
Location: Houma LA
Posts: 193
|
Re: 2.02 heads on my 307?
I dont see why not!!!! I ran some 2.02 1.60s on a 327 350 385 stroker!!!
__________________
1968 GMC Rebuilding Stage ![]() 2001 Camaro SS SOLD ![]() |
![]() |
![]() |
![]() |
#3 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
so i wont have a problem with valve clearance?
|
![]() |
![]() |
![]() |
#4 |
Senior Member
![]() Join Date: Mar 2006
Location: Clarkrange Tennessee
Posts: 1,786
|
Re: 2.02 heads on my 307?
what size chambers do you have on the 2.02 heads? 2.02 valves in 76 cc heads are great but with 64 chamber heads tend to bring your compression up.
|
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: Sep 2008
Location: Houma LA
Posts: 193
|
Re: 2.02 heads on my 307?
What kind of pistons are you running? I always ran flat tops!!!
__________________
1968 GMC Rebuilding Stage ![]() 2001 Camaro SS SOLD ![]() |
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Oct 2002
Location: Parksville, B.C. Canada
Posts: 637
|
Re: 2.02 heads on my 307?
You might have valve size problems with those heads on that block, that is the valves are actually too big to fit the smaller cylinder bore of the 307, I could be completely wrong though, someone else will chime in on this for sure.
__________________
1969 G.M.C 3/4 Ton 920 (Canadian Version) 307 3 speed, currently apart 1998 Chevy 1/2 ton ex cab V-6 5 speed 1967 Chevy SWB - project truck; not started just yet |
![]() |
![]() |
![]() |
#7 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
probably 70cc chambers, and running flat top pistons.
i was wondering about the valves not clear the cylinder, thats why i posted lol |
![]() |
![]() |
![]() |
#8 |
Registered User
Join Date: Sep 2008
Location: Houma LA
Posts: 193
|
Re: 2.02 heads on my 307?
I tried doing some research and i coiuldnt find anything about putting those heads on a 307!!!! Will do some more searching!!! Sorry i thouhgt you was worried about piston clearance!!!
__________________
1968 GMC Rebuilding Stage ![]() 2001 Camaro SS SOLD ![]() |
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Sep 2008
Location: Houma LA
Posts: 193
|
Re: 2.02 heads on my 307?
Super Chevy did a build on a 307 Here is the right up!!!!
http://www.superchevy.com/technical/...nce/index.html
__________________
1968 GMC Rebuilding Stage ![]() 2001 Camaro SS SOLD ![]() |
![]() |
![]() |
![]() |
#10 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: 2.02 heads on my 307?
if in doubt take the bare block put the heads on and look up the bore with a flashlight
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
![]() |
![]() |
![]() |
#11 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
sounds good cdowns
im actually trying to figure out what i want on it i posted a while back about what to do with my 307 and everyone said vortec but im thinking either 1.92 or 2.02 edelbrocks |
![]() |
![]() |
![]() |
#12 |
Registered User
Join Date: Sep 2007
Location: Grand Forks ND
Posts: 434
|
Re: 2.02 heads on my 307?
If I am correct the 2.02 valves will clear but they will be so close to the cylinder wall that the intake valve will be shrouded and a 1.94 valve will flow better.
__________________
"Beer is proof that God loves us and wants us to be happy" Ben Franklin ![]() 67 Chevy 1/2 lwb, 67 GMC 1/2 lwb (parts) |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
|
Re: 2.02 heads on my 307?
![]() The heads used in the Super Chevy article above are Edelbrocks E-Tec heads which are basicaly just an aluminum verson of the Vortecs. They still have the same 1.94/1.55 valves like the GM peices. The aluminum heads might give you a slighter increase in power over the cast iron heads, but not enough for the money spent. I would say with a mild 262 cam like used above, a set of GM Vortecs, and Edelbrock intake and a good carb, you would still very well be in the 300 hp mark if not just a little higher.
__________________
|
![]() |
![]() |
![]() |
#14 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
will i need a roller cam for the vortecs?
|
![]() |
![]() |
![]() |
#15 |
Registered User
![]() Join Date: Dec 2008
Location: K.C. Missouri
Posts: 1,024
|
Re: 2.02 heads on my 307?
Everyone told me Vortecs? so why would you put 2.02's on it, bigger is not always better, right ?
|
![]() |
![]() |
![]() |
#16 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
edelbrock make vortec?
|
![]() |
![]() |
![]() |
#17 |
Registered User
Join Date: Nov 2006
Location: Central Pa
Posts: 64
|
Re: 2.02 heads on my 307?
Do not use 2.02's on a small bore block there is a strong possibility of contact of the valve face with the bore.
__________________
'96 K2500 GMC 6.5 4L80E '88 c1500 RCSB lowered 4 & 6 454 TH700R4 (still being built) '79 K20 Chevy 400 4 spd '69 K20 Chevy 406 4spd '70 K10 Chevy 355 4spd 6 inch lift '70 C-20 (son's truck) originally 292 4spd now a 350 4spd Hey I didn't even want to until you told me I couldn't ! ![]() ![]() |
![]() |
![]() |
![]() |
#18 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
what do you think og these?
http://cgi.ebay.ca/SBC-CHEVY-ALUMINU...1%7C240%3A1318 would i have to change my flat top pistons to run pump gas? |
![]() |
![]() |
![]() |
#19 |
Pat
Join Date: Jan 2008
Location: canada, bc
Posts: 243
|
Re: 2.02 heads on my 307?
something like that except 1.94's
|
![]() |
![]() |
![]() |
#20 | |
Registered User
Join Date: Nov 2006
Location: Central Pa
Posts: 64
|
Re: 2.02 heads on my 307?
Quote:
http://store.summitracing.com/partde...5&autoview=sku Runner volume is perfect, and with the 67 cc chamber should be good with pump premium.
__________________
'96 K2500 GMC 6.5 4L80E '88 c1500 RCSB lowered 4 & 6 454 TH700R4 (still being built) '79 K20 Chevy 400 4 spd '69 K20 Chevy 406 4spd '70 K10 Chevy 355 4spd 6 inch lift '70 C-20 (son's truck) originally 292 4spd now a 350 4spd Hey I didn't even want to until you told me I couldn't ! ![]() ![]() |
|
![]() |
![]() |
![]() |
#21 |
Registered User
Join Date: Oct 2008
Location: Brighton, TN
Posts: 1,267
|
Re: 2.02 heads on my 307?
You can run 202's on a 307 with no issues. The bore is not as small as most people think. The real problem is your going to be running bigger valves for a setup that really dosent need it. Now if your were running around a 480 or so lift then i could see bigger valves but for your setup i would not spend the money. But thats just my .02 cents and its your money so the real decision is up to you.
__________________
A computer once beat me at chess, but it was no match for me at kick boxing. Duct tape is like the force. It has a light side, a dark side, and it holds the world together. |
![]() |
![]() |
![]() |
#22 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
|
Re: 2.02 heads on my 307?
I built a nice running 307 once and I ran 1.94s.I don`t think you`d see a benefit going with more valve.I`d stay with 1.94s.I think 2.02s will make a bad combination.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
![]() |
![]() |
![]() |
#23 |
Registered User
![]() Join Date: Jan 2008
Location: St.Petersburg,Fl
Posts: 1,267
|
Re: 2.02 heads on my 307?
2.02's will be overkill. You would probably be better with the 1.94's. It's all about the combination! Bigger isn't always better, unless it's your bank account!My .02
![]() |
![]() |
![]() |
![]() |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|