Have you succesfully put a bigger cam in a SBC with T.B.I.? - Page 3

gmctrucks · 10-23-2009, 03:59 AM

My buddy placed a cam on his 1988 burb he got it from Summit racing and it came out good. I love the sound of a little cam on a vehicle with a slight miss sound meaning like on the older carb cars.

Crmzendrgone · 10-23-2009, 10:01 AM

So if I am understanding this all correctly you put a little bit bigger cam in your engine and it ran bad come to find out plug wires were bad. Now that they have been corrected, engine runs fine with that cam at all engine speeds?

Chevy_Finatic79 · 10-23-2009, 02:52 PM

for the most part yes you are correct Crmzen

my idle still isnt as smooth as i'd like tho. but all other speeds it works great nice n snappy no shortage of power

before i drill the holes i mentioned earlier i am getting rid of my wide open true dual exhaust with glasspacks and no catalytic convertors. I kinda think thtas where my rough idle is coming from.

i am going to install flowmaster turbos and some kind of h pipe to equal out the pipes. I HATE THE SOUND OF GLASSPACKS CANT STAND EM AND THE PERFORMANCE SUCKS.

Chevy_Finatic79 · 10-27-2009, 11:28 AM

so i drilled the holes in my butterfly's and boy am i glad i did my idle is as smooth as can be now. i drilled 1 hole in each butterfly toward the front of the trhottle body in front of the butterfly shaft deadnuts in the middle the drill bit size was approx 1/8 inch or #21.

no more bogging or surging at red lights guess that old boy knew what he was talkin bout he's like 65 so he's seen and done it all,lol

hotrodpc · 10-27-2009, 11:35 AM

Thanks for trying that out and letting us know the result. So it smoothed out the idle, but how about the rest of it thougout the power band? Everything still good, and no codes or CEL???

Chevy_Finatic79 · 10-27-2009, 11:58 AM

will drive around today when i get off work and post results,

(note) i never had problems except with idle in drive at a light so problems best not emerge either way i'll let ya'll know thanx for the inerest

Crmzendrgone · 10-27-2009, 12:07 PM

COOL! Thanks for the results. Eagerly waiting your further test results

Wyley87 · 10-27-2009, 12:23 PM

can you take some pictures so i can see the exact locations where you drilled those holes? I'm asking becuase my brother has a 90 chevy with an rv cam in it and it dose something similar. being doing it ever since he put that cam in

Chevy_Finatic79 · 10-27-2009, 12:57 PM

yea i can take pics only problem is my camera is broken so i will borrow one to post the pics may be a day or 2 or 3 tho,lol

Wyley87 · 10-27-2009, 01:02 PM

im in no hurry, bros been driving it like that for years. just want to pass some information his way

10-23-2009, 10:01 AM	#22
Crmzendrgone Senior Member Join Date: Apr 2009 Location: Arizona Posts: 1,420	So if I am understanding this all correctly you put a little bit bigger cam in your engine and it ran bad come to find out plug wires were bad. Now that they have been corrected, engine runs fine with that cam at all engine speeds? __________________ ENGINES PRODUCE POWER. MOTORS RECEIVE POWER. https://lastroundbestround.com/Home_Page.html

10-23-2009, 02:52 PM	#23
Chevy_Finatic79 Senior Member Join Date: Mar 2008 Location: Lincoln NE Posts: 478	for the most part yes you are correct Crmzen my idle still isnt as smooth as i'd like tho. but all other speeds it works great nice n snappy no shortage of power before i drill the holes i mentioned earlier i am getting rid of my wide open true dual exhaust with glasspacks and no catalytic convertors. I kinda think thtas where my rough idle is coming from. i am going to install flowmaster turbos and some kind of h pipe to equal out the pipes. I HATE THE SOUND OF GLASSPACKS CANT STAND EM AND THE PERFORMANCE SUCKS. __________________ "She's gonna Freak when she see's my wheels" 85' Chevy C-10 Longbox (Rat) TBI 327 Cu.In./THM350 90' Chevy Suburban 4x4 TBI 350 Cu.In./700R4 http://www.truckforum.org/forums/truck-pictures-176.htm

10-27-2009, 11:28 AM	#24
Chevy_Finatic79 Senior Member Join Date: Mar 2008 Location: Lincoln NE Posts: 478	so i drilled the holes in my butterfly's and boy am i glad i did my idle is as smooth as can be now. i drilled 1 hole in each butterfly toward the front of the trhottle body in front of the butterfly shaft deadnuts in the middle the drill bit size was approx 1/8 inch or #21. no more bogging or surging at red lights guess that old boy knew what he was talkin bout he's like 65 so he's seen and done it all,lol __________________ "She's gonna Freak when she see's my wheels" 85' Chevy C-10 Longbox (Rat) TBI 327 Cu.In./THM350 90' Chevy Suburban 4x4 TBI 350 Cu.In./700R4 http://www.truckforum.org/forums/truck-pictures-176.htm

10-27-2009, 11:35 AM	#25
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,175	Thanks for trying that out and letting us know the result. So it smoothed out the idle, but how about the rest of it thougout the power band? Everything still good, and no codes or CEL??? __________________ *Winners NEVER Quit , Quitters NEVER Win !!!*

10-27-2009, 11:58 AM	#26
Chevy_Finatic79 Senior Member Join Date: Mar 2008 Location: Lincoln NE Posts: 478	will drive around today when i get off work and post results, (note) i never had problems except with idle in drive at a light so problems best not emerge either way i'll let ya'll know thanx for the inerest __________________ "She's gonna Freak when she see's my wheels" 85' Chevy C-10 Longbox (Rat) TBI 327 Cu.In./THM350 90' Chevy Suburban 4x4 TBI 350 Cu.In./700R4 http://www.truckforum.org/forums/truck-pictures-176.htm

10-23-2009, 03:59 AM	#21
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,035	My buddy placed a cam on his 1988 burb he got it from Summit racing and it came out good. I love the sound of a little cam on a vehicle with a slight miss sound meaning like on the older carb cars.

10-27-2009, 12:07 PM	#27
Crmzendrgone Senior Member Join Date: Apr 2009 Location: Arizona Posts: 1,420	COOL! Thanks for the results. Eagerly waiting your further test results __________________ ENGINES PRODUCE POWER. MOTORS RECEIVE POWER. https://lastroundbestround.com/Home_Page.html

10-27-2009, 12:23 PM	#28
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	can you take some pictures so i can see the exact locations where you drilled those holes? I'm asking becuase my brother has a 90 chevy with an rv cam in it and it dose something similar. being doing it ever since he put that cam in __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

10-27-2009, 12:57 PM	#29
Chevy_Finatic79 Senior Member Join Date: Mar 2008 Location: Lincoln NE Posts: 478	yea i can take pics only problem is my camera is broken so i will borrow one to post the pics may be a day or 2 or 3 tho,lol __________________ "She's gonna Freak when she see's my wheels" 85' Chevy C-10 Longbox (Rat) TBI 327 Cu.In./THM350 90' Chevy Suburban 4x4 TBI 350 Cu.In./700R4 http://www.truckforum.org/forums/truck-pictures-176.htm

10-27-2009, 01:02 PM	#30
Wyley87 Senior Member Join Date: Jul 2009 Location: Arlington, Tx Posts: 519	im in no hurry, bros been driving it like that for years. just want to pass some information his way __________________ 96-GMC C1500 305ci 2WD K&N FIPK Cold Air Intake Rebuilt Motor (should have gone 350) and Trans 05 Nissan Xterra 4.0 V6 No mods so far Cost money to go fast...How fast do you wanna go?

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