aftermarket tranny x member opinions
 

I bought one of those "Performance" Square tubed x members from GMC Pauls for my transmission thinking it might be beneficial with my new 421SBC installation.

However sizing it up today for installation I find it is around 1/2 inch to short between the frame rails and the bolt holes do not line up, plus it is not centered for the tranny mount. It is a nice heavy piece however it does not quite match the pic on the website as well......

Now i am thinking of just putting a few welds on my factory x member to reinforce the rivets and then just painting and reinstalling. What do you guys think??
Any benefit over the stock piece for performance and strength????

Re: aftermarket tranny x member opinions
 

Can't help you too much with the tranny crossmember. I took out an IFS (Ingenuity Fab and Speed) crossmember that worked well that the previous owner installed (they have been out of stock for a new one for a while now), and installed a TW Fab one which is remarkably beefy (and everything lined up perfectly).

What are the details on the 421 your building?! I've been kicking around that idea myself as well!

Re: aftermarket tranny x member opinions
 

See if GForce makes one for the C10. I got one of theirs in the Chevelle.

Re: aftermarket tranny x member opinions
 

What are the details on the 421 your building?! I've been kicking around that idea myself as well![/QUOTE]


I bought a deluxe short-block from Nyes Racing in Muncie,In comes with a Dart SHP block, Eagle rotating assembly, SRP Pistons 10.5:1 , comp cam 237/246 520/530 lift with 113 LSA .
and I am waiting on a set of heads from Eric Weingartner out of oklahoma. His 195 profilers ported out to 213 CC .

I wanted to go down on the duration slightly around 233/241 and have a 112LSA but Pat McCreery said his cam grinder can not get roller cores. Normally they have Erson custom grinds. So he finally found me a on the shelf comp piece

Re: aftermarket tranny x member opinions
 

if i google TW fab i get a hummer website???

Re: aftermarket tranny x member opinions
 

If you are lucky

Re: aftermarket tranny x member opinions
 

G force does make them for a C10

Re: aftermarket tranny x member opinions
 

I'd buy it if I needed one for my C10. The one in my Chevelle fits like a glove and the 3" exhaust goes right through it.

Re: aftermarket tranny x member opinions
 

Pull the rail in with a ratchet strap.
The oem frames are super flexible.
And move a bunch

Re: aftermarket tranny x member opinions
 

lol...Tin Works Fabrication...try that!

bigmac- whats the power output on that 421? Sounds great.

Re: aftermarket tranny x member opinions
 

i might try it.However I matched it up with my factory member and it is defiantly shorter.

Re: aftermarket tranny x member opinions
 

I am shooting for 550 Torque, I told Pat i was not concerned about the HP . If you get the TQ numbers up the HP will follow suit. And I do not really plan on taking it higher that 5800RPM's

Re: aftermarket tranny x member opinions
 

Have you talked to GMC Paul's about this? Confirm you got the right part?

Re: aftermarket tranny x member opinions
 

No i have not this thing has been sittinf in my garage for about 6 month or.longer. i cant even find the receipt.

Re: aftermarket tranny x member opinions
 

just found the receipt from Feb. out in the garage cleaning and going though a million parts boxes
going to give them a call and see what is up

Re: aftermarket tranny x member opinions
 

I really like the Holley Blackheart crossmember

Re: aftermarket tranny x member opinions
 

I will take a look