TrickFlow Heads

Reply Subscribe

Thread Tools

Search this Thread

May 29, 2020 | 04:03 PM

Larphred

Thread Starter

Instructor

Joined: May 2016

Posts: 222

Likes: 8

From: Sandy Utah

TrickFlow Heads

I’m very unhappy with a set of TrickFlow heads I purchases for my SBC. I’ve done everything I could to build a strong bottom end to accept nitrous. I shopped around & settled on TrickFlow bare heads w/Manley valves and Crane springs, etc. when I was almost finished and ready to put on my Crane stud girdle, the holes were off. Evidently one must use proprietary TrickFlow stud girdle which are only sold with their own poly lock nuts.

Ive never seen this before, especially since Summit Racing advertises that the heads are compatible with most SBC aftermarket parts.
I have tried to call them for 5 days, waited on the phone, left messages, etc. so I’m a bit frustrated.

Jul 10, 2020 | 09:32 AM

Kevova

Le Mans Master

Joined: Sep 2013

Posts: 6,192

Likes: 750

From: near the thumb in the mitten

IDK which head you have, however trickflow made a twisted wedge or canted valve head. With the revised valve angles the standard SBC won't work.

Jul 10, 2020 | 11:48 AM

Larphred

Thread Starter

Instructor

Joined: May 2016

Posts: 222

Likes: 8

From: Sandy Utah

Thanks Kenova, but these are standard 23 degree sbc heads. The poly lock rocker arm nuts come so close to fitting my Crane stud girdle, perhaps 0.010” off. In my opinion, they were designed so the user must buy Trick Flow poly locks and stud girdle.
But, then again, I could be wrong.

Jul 10, 2020 | 02:20 PM

Kevova

Le Mans Master

Joined: Sep 2013

Posts: 6,192

Likes: 750

From: near the thumb in the mitten

TF must have changed valve spacing away from stock possibly due how ports were configured.

Jul 10, 2020 | 03:40 PM

cv67

Team Owner

Joined: Oct 2004

Posts: 81,241

Likes: 3,062

From: altered state

St. Jude Donor '05

Never fun to find that out after you bought them.....thats a huge downside with chinese heads noone wants to listen to.
Do you have to have a stud girdle? What cam are you running and size studs?

Jul 10, 2020 | 04:06 PM

Larphred

Thread Starter

Instructor

Joined: May 2016

Posts: 222

Likes: 8

From: Sandy Utah

Trick Flow heads aren’t Chinesium, they are made in USA.
my cam is Crane roller #119841. Intake lift 0.539” at valve. Exhaust lift 0.558” at valve. Redline is 7000 RPM. MANLEY valves & rods, Wiseco pistons

Jul 14, 2020 | 10:36 AM

cv67

Team Owner

Joined: Oct 2004

Posts: 81,241

Likes: 3,062

From: altered state

St. Jude Donor '05

know they are not chinese, was correlaing your problem with them
Where did you buy them? Summit and Jegs have good return policies.

Jul 14, 2020 | 11:51 AM

Larphred

Thread Starter

Instructor

Joined: May 2016

Posts: 222

Likes: 8

From: Sandy Utah

Thanks, good suggestion. I’ve been dealing w/ Summit & Jegs a lot. Their return policies are second to none.
However, I bought the heads bare because I wanted Manley valves and Crane springs. They have been port matched to the intake manifold so I wouldn't think Jegs would take them back.
appreciate your suggestion.