I got a 400! Just a couple opinionated questions, though - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rogue_Alphonse · 04-15-2013, 10:30 PM

Currently it has a stock aluminum spreadbore Quadrajunk intake on it, with a spot for an EGR. Should I just go with a TBI intake [which would be a Holley Performer with a spacer I already have], or an adapter possibly with a spacer I already have to mate the TBI to the current intake?

Also since I'm going from a 350, has anyone ever used a balancing plate to make a n internally balanced fly work on an externally balanced engine? I'm already getting a new harmonic balancer because it has none currently.

blazerkid · 04-16-2013, 07:06 PM

no you need a 400 externally balanced flywheel and harmonic balancer
the 454 tbi's had a Quadrajet intake with a adapter so you can git one to use a Quadrajet intake on it
or modify your tbi intake to use it

gmclowsierra · 04-17-2013, 07:00 PM

Wwe bought an adapter weight and used a 350 flywheel on the last 400 I put together.
Posted via Mobile Device

Rogue_Alphonse · 04-20-2013, 09:40 PM

I've read about those adapters and haven't found any bad comments about em, but it never hurts to get more opinions!
Posted via Mobile Device

04-15-2013, 10:30 PM	#1
Rogue_Alphonse Registered User Join Date: Dec 2009 Location: Gap PA Posts: 280	I got a 400! Just a couple opinionated questions, though Currently it has a stock aluminum spreadbore Quadrajunk intake on it, with a spot for an EGR. Should I just go with a TBI intake [which would be a Holley Performer with a spacer I already have], or an adapter possibly with a spacer I already have to mate the TBI to the current intake? Also since I'm going from a 350, has anyone ever used a balancing plate to make a n internally balanced fly work on an externally balanced engine? I'm already getting a new harmonic balancer because it has none currently. __________________ 1991 Mustang GT Vert, T-5 w/ Pro 5.0, Trick Flow upper & lower, BBK cold air intake, 3:73, BAMA chip, etc. 1988 K5 Blazer, [coming soon] TBI 400, SM465/NP208, 12 bolt rear, 3:08's, looks like a 1980. 1998 Jeep Grand Cherokee 4.0 fully loaded daily driver! Where there's a will, there's a rig!

04-16-2013, 07:06 PM	#2
blazerkid Registered User Join Date: Mar 2012 Location: kemptville ontario Posts: 103	Re: I got a 400! Just a couple opinionated questions, though no you need a 400 externally balanced flywheel and harmonic balancer the 454 tbi's had a Quadrajet intake with a adapter so you can git one to use a Quadrajet intake on it or modify your tbi intake to use it

04-17-2013, 07:00 PM	#3
gmclowsierra Registered User Join Date: Mar 2008 Location: williamsport,pa Posts: 329	Re: I got a 400! Just a couple opinionated questions, though Wwe bought an adapter weight and used a 350 flywheel on the last 400 I put together. Posted via Mobile Device

04-20-2013, 09:40 PM	#4
Rogue_Alphonse Registered User Join Date: Dec 2009 Location: Gap PA Posts: 280	Re: I got a 400! Just a couple opinionated questions, though I've read about those adapters and haven't found any bad comments about em, but it never hurts to get more opinions! Posted via Mobile Device __________________ 1991 Mustang GT Vert, T-5 w/ Pro 5.0, Trick Flow upper & lower, BBK cold air intake, 3:73, BAMA chip, etc. 1988 K5 Blazer, [coming soon] TBI 400, SM465/NP208, 12 bolt rear, 3:08's, looks like a 1980. 1998 Jeep Grand Cherokee 4.0 fully loaded daily driver! Where there's a will, there's a rig!



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.