headers to close to tranny mount - The 1947 - Present Chevrolet & GMC Truck Message Board Network

steppside69 · 04-07-2004, 10:37 AM

i have a question and i hope someone has an answer. i have a 69 stepside chevy with a 350sb, it originally had a inline 6 with a 3 speed on the tree, i changed to a sb and put a 700r4 tranny in. i had to get a crossmember for the tranny at a junkyard and put it in myself. the headers i have are to close to the crossmember for the tranny on the passenger side. i have about 5.5 inches of clearence from the end of the header to the front of the tranny. is this right? i hanvt been able to drive this truck in 5 yrs

i am so close now but i need some advice!!!!
love the site thanks for your help steppside69

**1970 CST Short Wide** · 04-07-2004, 10:57 AM

Any chance you could get some pic's so we could get a better idea of what you’re talking about?? Something doesn't sound right

steppside69 · 04-07-2004, 12:19 PM

i dont know if you can put the tranny crossmember in backwards or not! dont have a camera so i dont have any pics to have a good visual. are there different crossmembers (tranny) for different year trucks (67-72) or are they all the same? if i try to put the reducers on the headers the pipe is right dead in the middle of the crossmember. the header on the driver side seems alot lower than the passenger side. does this sound right?
the passenger side is higer by 2 inches. that is where i have the problem

i dont know if anyone has had this problem before but i cant seem to figure it out. im new to the site and enjoy all the info i get from it thanks for your help

damage · 04-07-2004, 04:14 PM

Now are your referring to the member that holds up the rear of the transmission or up front near the bell house? The 3 speed tranny mounted up front near the bell house and the tail hung in the air. The auto will have the crossmember under tail of the tranny. Hope that helps...

jewels. · 04-07-2004, 06:46 PM

ok- now this may sound a little strange, but is your motor mounted in the correct position for a small block?

(my motor is mounted incorrectly, and thus headers wont fit on my engine)....

just an idea.....

jewels.

steppside69 · 04-07-2004, 08:04 PM

the crossmember is under the tail of the tranny.
i did have to move the motor forward because it had originally a 6 cylinder and the motor was to close to the cab. so i went to a local junk yard and got the right frame mounts. the motor is in the right place for a v8.the passenger side header is the problem, it sets to close to the collecter. thank you

04-07-2004, 10:37 AM	#1
steppside69 Registered User Join Date: Apr 2004 Location: Rossford,Ohio Posts: 291	headers to close to tranny mount i have a question and i hope someone has an answer. i have a 69 stepside chevy with a 350sb, it originally had a inline 6 with a 3 speed on the tree, i changed to a sb and put a 700r4 tranny in. i had to get a crossmember for the tranny at a junkyard and put it in myself. the headers i have are to close to the crossmember for the tranny on the passenger side. i have about 5.5 inches of clearence from the end of the header to the front of the tranny. is this right? i hanvt been able to drive this truck in 5 yrs i am so close now but i need some advice!!!! love the site thanks for your help steppside69

04-07-2004, 10:57 AM	#2
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,170	Any chance you could get some pic's so we could get a better idea of what you’re talking about?? Something doesn't sound right __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

04-07-2004, 06:46 PM	#5
jewels. Registered User Join Date: Jul 2001 Location: Munster, IN Posts: 1,100	ok- now this may sound a little strange, but is your motor mounted in the correct position for a small block? (my motor is mounted incorrectly, and thus headers wont fit on my engine).... just an idea..... jewels. __________________ 68 C10 Red Step 350 my first child & main focus 58 3200 Apache LWB Step the upcoming project

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04-07-2004, 12:19 PM	#3
steppside69 Registered User Join Date: Apr 2004 Location: Rossford,Ohio Posts: 291	i dont know if you can put the tranny crossmember in backwards or not! dont have a camera so i dont have any pics to have a good visual. are there different crossmembers (tranny) for different year trucks (67-72) or are they all the same? if i try to put the reducers on the headers the pipe is right dead in the middle of the crossmember. the header on the driver side seems alot lower than the passenger side. does this sound right? the passenger side is higer by 2 inches. that is where i have the problem i dont know if anyone has had this problem before but i cant seem to figure it out. im new to the site and enjoy all the info i get from it thanks for your help

04-07-2004, 04:14 PM	#4
damage Registered User Join Date: May 2002 Location: Greer, SC Posts: 82	Now are your referring to the member that holds up the rear of the transmission or up front near the bell house? The 3 speed tranny mounted up front near the bell house and the tail hung in the air. The auto will have the crossmember under tail of the tranny. Hope that helps...

04-07-2004, 08:04 PM	#6
steppside69 Registered User Join Date: Apr 2004 Location: Rossford,Ohio Posts: 291	the crossmember is under the tail of the tranny. i did have to move the motor forward because it had originally a 6 cylinder and the motor was to close to the cab. so i went to a local junk yard and got the right frame mounts. the motor is in the right place for a v8.the passenger side header is the problem, it sets to close to the collecter. thank you



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